Alexander Lincoln Read

Professor - High Energy Physics

Norwegian version of this page

Email a.l.read@fys.uio.no

Phone +47 22855062

Room FØ381

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Visiting address Sem Sælands vei 24 Fysikkbygningen 0371 Oslo

Postal address Postboks 1048 Blindern 0316 Oslo

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Academic Interests

My current research activities include: precision measurements of the Higgs boson with the ATLAS experiment at the Large Hadron Collider (CERN); exploring the possible link between Dark Matter and the Higgs boson; the statistical treatment of search results (e.g. the CLs prescription); and application of methods of signal processing and data analysis (e.g. Compressed sensing, Gaussian Processes, and Machine learning) to challenges in experimental particle physics.

Teaching

Higher education and employment history

1977-1981 BS, University of Illinois, Urbana-Champaign
1981-1986 PhD, University of Colorado, Boulder
1986-1989 NAVF, Scientific Assistant, University of Oslo
1989-1991 Scientific Associate, CERN
1991-1992 NAVF Researcher, University of Oslo
1993- Professor, University of Oslo

Appointments

Norwegian representative in Restricted ECFA

Cooperation

RCN project High Energy Particle Physics
ATLAS experiment at CERN
Insights (Marie Curie International Training Network of Statistics for High Energy Physics and Society)

Tags: Particle physics, LHC, CERN, ATLAS, Higgs boson, Search statistics, Dark Matter

"Radiation hard 3D silicon pixel sensors for use in the ATLAS detector at the HL-LHC", A.L. Heggelund et al. (14 authors), 2022 JINST 17 P08003.

"Measurement of Higgs boson production in the diphoton decay channel in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector", G. Aad et al. [ATLAS Collaboration], arXiv:1408.7084, Phys.Rev. D90 (2014) 11, 112015.

"ATLAS grid workload on NDGF resources: Analysis, modeling, and workload generation", Dmytro Karpenko, Roman Vitenberg, Alexander L. Read,Future Generation Computer Systems, Volume 47, June 2015, Pages 31-47, ISSN 0167-739X.

"The discovery and measurements of a Higgs boson", A. L. Read, 2013 Phys. Scr. 2013 014009.

“A particle consistent with the Higgs Boson observed with the ATLAS Detector at the Large Hadron Collider”
G. Aad et al. [ATLAS Collaboration]. 10.1126/science.1232005 Science 338, 1576 (2012).

“Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC”, G. Aad et al. [ATLAS Collaboration], arXiv:1207.7214 [hep-ex], 10.1016/j.physletb.2012.08.020. Phys. Lett. B 716, 1 (2012)

The ATLAS Collaboration, "Limits on the production of the Standard Model Higgs Boson in pp collisions at sqrt(s) =7 TeV with the ATLAS detector", Submitted to EPJC, CERN-PH-EP-2011-076, arXiv:1106.2748v2 [hep-ex].

D. Cameron, A. Konstantinov, F. Ould-Saada, K. Pajchel, A. Read, B. Samset and A. Taga, The advanced resource connector for distributed LHC computing, PoS A CAT08, 046 (2008), Proceedings Of Science.

The DELPHI Collaboration, Final results from DELPHI on the searches for SM and MSSM neutral Higgs bosons, THE EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS, 2003, Volume 32, Number 2, 145-183, doi.org/10.1140/epjc/s2003-01394-x.

The LEP Collaborations and The LEP Working Group for Higgs Searches, Search for the Standard Model Higgs boson at LEP, Physics Letters B, 565, 61-75, 2003, DOI: 10.1016/S0370-2693(03)00614-2.

A. L. Read, Presentation of search results: the CLs technique, 2002, J. Phys. G: Nucl. Part. Phys. 28 2693 doi: 10.1088/0954-3899/28/10/313.

A. L. Read, Modified frequentist analysis of search results (the CLs method), CERN-OPEN-2000-205, CERN, Geneva, 1st Workshop on Confidence Limits, CERN, Geneva, Switzerland, 17 - 18 Jan 2000, pp.81-101, http://cdsweb.cern.ch/record/451614.

S. J. Alvsvaag et al., The small angle tile calorimeter in the DELPHI experiment, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 425, Issues 1-2, 1 April 1999, Pages 106-139, doi.org/10.1016/S0168-9002(98)01401-6.

A. L. Read, Linear interpolation of histograms, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 425, Issues 1-2, 1 April 1999, Pages 357-360, doi.org/10.1016/S0168-9002(98)01347-3.

L. Bugge et al., Absolute in situ energy calibration of luminosity calorimeters in the DELPHI experiment at LEP, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 327, Issues 2-3, 1 April 1993, Pages 296-307, doi:10.1016/0168-9002(93)90695-E.

W. W. Ash et al., Precise Measurements of the Leptonic Branching Ratios of the Tau Lepton, Phys. Rev. Lett. 55, 20,2118-2121, (1985), doi: 10.1103/PhysRevLett.55.2118.

“A Precise Measurement of the Branching Fraction for the Decay τ →ντ π”, W. T. Ford, N. Qi, A. L. Read, J. G. Smith, T. Camporesi, I. Peruzzi, M. Piccolo and R. B. Hurst et al. 10.1103/PhysRevD.35.408, Phys. Rev. D 35, 408 (1987).

Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Potti, H.; Ruggeri, T.A. & Ting, E.X.L. [Show all 2,891 contributors for this article] (2024). Observation of WZγ Production in pp Collisions at sqrt[s]=13 TeV with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 132(2). doi: 10.1103/PhysRevLett.132.021802.
Aad, G.; Abbott, B.; Abbott, D.C.; Abed Abud, Abud; Abeling, K. & Abhayasinghe, D.K. [Show all 2,909 contributors for this article] (2024). Study of High-Transverse-Momentum Higgs Boson Production in Association with a Vector Boson in the qqbb Final State with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 132(13). doi: 10.1103/PhysRevLett.132.131802.
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 5,289 contributors for this article] (2024). Evidence for the Higgs boson decay to a Z boson and a photon at the LHC. Physical Review Letters. ISSN 0031-9007. 132(2). doi: 10.1103/PhysRevLett.132.021803.
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,770 contributors for this article] (2024). Performance and calibration of quark/gluon-jet taggers using 140 fb−1 of pp collisions at √s = 13 TeV with the ATLAS detector. Chinese Physics C. ISSN 1674-1137. 48(2). doi: 10.1088/1674-1137/acf701.
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,935 contributors for this article] (2024). Measurement of the H→ γγ and H→ ZZ∗→ 4 ℓ cross-sections in pp collisions at √s=13.6 TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 84(1). doi: 10.1140/epjc/s10052-023-12130-5.
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,881 contributors for this article] (2024). Search for non-resonant production of semi-visible jets using Run 2 data in ATLAS. Physics Letters B. ISSN 0370-2693. 848. doi: 10.1016/j.physletb.2023.138324.
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,874 contributors for this article] (2023). Search for heavy long-lived multi-charged particles in the full LHC Run 2 pp collision data at s=13 TeV using the ATLAS detector. Physics Letters B. ISSN 0370-2693. 847. doi: 10.1016/j.physletb.2023.138316. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,907 contributors for this article] (2023). Measurement of the Higgs boson mass with H → γγ decays in 140 fb−1 of s=13 TeV pp collisions with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 847. doi: 10.1016/j.physletb.2023.138315. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abidi, S.H.; Aboulhorma, A. & Abramowicz, H. [Show all 2,838 contributors for this article] (2023). Search for exclusive Higgs and Z boson decays to ωγ and Higgs boson decays to K⁎γ with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 847. doi: 10.1016/j.physletb.2023.138292. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,901 contributors for this article] (2023). Search for doubly charged Higgs boson production in multi-lepton final states using 139 fb - 1 of proton–proton collisions at √s = 13 TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 83(7). doi: 10.1140/epjc/s10052-023-11578-9. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,915 contributors for this article] (2023). Search for supersymmetry in final states with missing transverse momentum and three or more b-jets in 139 fb-1 of proton–proton collisions at √s=13 TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 83(7). doi: 10.1140/epjc/s10052-023-11543-6. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abidi, S.H.; Aboulhorma, A. & Abramowicz, H. [Show all 2,880 contributors for this article] (2023). Measurements of differential cross sections of Higgs boson production through gluon fusion in the H? WW*? e?µ? final state at √s=13 TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 83(9). doi: 10.1140/epjc/s10052-023-11873-5. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abidi, S.H.; Aboulhorma, A. & Abramowicz, H. [Show all 2,877 contributors for this article] (2023). Search for pair production of third-generation leptoquarks decaying into a bottom quark and a τ -lepton with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 83(11). doi: 10.1140/epjc/s10052-023-12104-7. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,897 contributors for this article] (2023). Search for dark matter produced in association with a single top quark and an energetic W boson in √s= 13 TeV pp collisions with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 83(7). doi: 10.1140/epjc/s10052-023-11582-z. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,914 contributors for this article] (2023). Measurement of the CP properties of Higgs boson interactions with τ -leptons with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 83(7). doi: 10.1140/epjc/s10052-023-11583-y.
Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Potti, H.; Ruggeri, T.A. & Ting, E.X.L. [Show all 2,889 contributors for this article] (2023). Search for Dark Photons in Rare Z Boson Decays with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 131(25). doi: 10.1103/PhysRevLett.131.251801. Full text in Research Archive
Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Pandya, H.D.; Potti, H. & Ruggeri, T.A. [Show all 2,900 contributors for this article] (2023). Search for a new pseudoscalar decaying into a pair of muons in events with a top-quark pair at √s = 13 TeV with the ATLAS detector. Physical Review D. ISSN 2470-0010. 108(9). doi: 10.1103/PhysRevD.108.092007. Full text in Research Archive
Filmer, E.K.; Grant, C.M.; Jackson, P.; Kong, A.X.Y.; Pandya, H.D. & Potti, H. [Show all 2,904 contributors for this article] (2023). Combined Measurement of the Higgs Boson Mass from the H → γγ and H → ZZ∗ → 4ℓ Decay Channels with the ATLAS Detector Using √s = 7, 8, and 13 TeV pp Collision Data. Physical Review Letters. ISSN 0031-9007. 131(25). doi: 10.1103/PhysRevLett.131.251802. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abidi, S.H.; Abramowicz, H. & Abreu, H. [Show all 2,877 contributors for this article] (2023). Studies of the muon momentum calibration and performance of the ATLAS detector with pp collisions at √s=13 TeV. European Physical Journal C. ISSN 1434-6044. 83(8). doi: 10.1140/epjc/s10052-023-11584-x. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,902 contributors for this article] (2023). Tools for estimating fake/non-prompt lepton backgrounds with the ATLAS detector at the LHC. Journal of Instrumentation (JINST). ISSN 1748-0221. 18(11). doi: 10.1088/1748-0221/18/11/T11004. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,899 contributors for this article] (2023). Fast b-tagging at the high-level trigger of the ATLAS experiment in LHC Run 3. Journal of Instrumentation (JINST). ISSN 1748-0221. 18(11). doi: 10.1088/1748-0221/18/11/P11006. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,912 contributors for this article] (2023). A search for heavy Higgs bosons decaying into vector bosons in same-sign two-lepton final states in pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)200.
Ananiev, Viktor & Read, Alexander Lincoln (2023). SigCorr: A Python package for studies of trials factors. Journal of Open Source Software (JOSS). ISSN 2475-9066. 8(87), p. 4989–4989. doi: 10.21105/joss.04989. Full text in Research Archive Show summary
Up-crossings, Euler characteristic and Gaussian processes are commonly relied on for the estimation of trials factors. SigCorr is the first project that assembles all of these into one Python package, that also includes the tools for parallel analysis of the Monte Carlo "toy" experiments and Gaussian process "toys" in a unified fashion. Together with the fitting framework it allows the path from the statistical model definition to a TF estimate to be travelled. It also implements validated approximations and asymptotics for fast computations of the TF and its upper bound based on classical papers in the field. The possibility of doing this in a modular but consistent fashion makes SigCorr unique in the field, and will allow users to try different methods (Figure 1), cross-validate and choose or construct the most suitable approach to their analysis. (copied and slightly modified from the publication)
Ananiev, Viktor & Read, Alexander Lincoln (2023). Linear approximation to the statistical significance autocovariance matrix in the asymptotic regime. Journal of Instrumentation (JINST). ISSN 1748-0221. 18(P10018). doi: 10.1088/1748-0221/18/10/P10018. Full text in Research Archive Show summary
Approximating significance scans of searches for new particles in high-energy physics experiments as Gaussian fields is a well-established way to estimate the trials factors required to quantify global significances. We propose a novel, highly efficient method to estimate the covariance matrix of such a Gaussian field. The method is based on the linear approximation of statistical fluctuations of the signal amplitude. For one-dimensional searches the upper bound on the trials factor can then be calculated directly from the covariance matrix. For higher dimensions, the Gaussian process described by this covariance matrix may be sampled to calculate the trials factor directly. This method also serves as the theoretical basis for a recent study of the trials factor with an empirically constructed set of Asmiov-like background datasets. We illustrate the method with studies of a H → γγ inspired model that was used in the empirical paper.
Ananiev, Viktor & Read, Alexander Lincoln (2023). Gaussian Process-based calculation of look-elsewhere trials factor. Journal of Instrumentation (JINST). ISSN 1748-0221. 18(P05041). doi: 10.1088/1748-0221/18/05/P05041. Full text in Research Archive Show summary
In high-energy physics it is a recurring challenge to efficiently and precisely (enough) calculate the global significance of, e.g., a potential new resonance. We propose a new method that models the significance in the search region as a Gaussian Process. The kernel of the Gaussian Process is approximated with a covariance matrix and is calculated with a carefully designed set of background-only data sets, comparable in number to the random background-only data sets used in a typical analysis that relies on the average upcrossings of the significance. The trials factor for both low and moderate significances can subsequently be calculated to the desired precision with a computationally inexpensive random sampling of the Gaussian Process. In addition, once the covariance of the Gaussian Process is determined, the average number of upcrossings can be computed analytically. In our work we give some highlights of the analytic calculation and also discuss some peculiarities of the trials factor estimation on a finite grid. We illustrate the method with studies of three complementary statistical models.
Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Potti, H.; Ruggeri, T.A. & Ting, E.X.L. [Show all 2,880 contributors for this article] (2023). Integrated and differential fiducial cross-section measurements for the vector boson fusion production of the Higgs boson in the H → WW* → eνμν decay channel at 13 TeV with the ATLAS detector. Physical Review D. ISSN 2470-0010. 108(7). doi: 10.1103/PhysRevD.108.072003. Full text in Research Archive
Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Potti, H.; Ruggeri, T.A. & Ting, E.X.L. [Show all 2,825 contributors for this article] (2023). Measurement of Suppression of Large-Radius Jets and Its Dependence on Substructure in Pb+Pb Collisions at √sNN = 5.02 TeV with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 131(17). doi: 10.1103/PhysRevLett.131.172301. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,920 contributors for this article] (2023). Measurement of the Sensitivity of Two-Particle Correlations in pp Collisions to the Presence of Hard Scatterings. Physical Review Letters. ISSN 0031-9007. 131(16). doi: 10.1103/PhysRevLett.131.162301. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,892 contributors for this article] (2023). Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 131(18). doi: 10.1103/PhysRevLett.131.181901. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,813 contributors for this article] (2023). Search for lepton-flavour violation in high-mass dilepton final states using 139 fb −1 of pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(10). doi: 10.1007/JHEP10(2023)082. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abidi, S.H.; Aboulhorma, A. & Abramowicz, H. [Show all 2,873 contributors for this article] (2023). Luminosity determination in pp collisions at √s=13 TeV using the ATLAS detector at the LHC. European Physical Journal C. ISSN 1434-6044. 83(10). doi: 10.1140/epjc/s10052-023-11747-w. Full text in Research Archive
Amerl, M.; Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Potti, H. & Ruggeri, T.A. [Show all 2,847 contributors for this article] (2023). Search for nonresonant pair production of Higgs bosons in the bb¯bb¯ final state in pp collisions at √ s = 13 TeV with the ATLAS detector. Physical Review D. ISSN 2470-0010. 108(5). doi: 10.1103/PhysRevD.108.052003. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,887 contributors for this article] (2023). Measurement of the cross-sections of the electroweak and total production of a Zγ pair in association with two jets in pp collisions at s=13 TeV with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 846. doi: 10.1016/j.physletb.2023.138222. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,909 contributors for this article] (2023). Observation of the γγ→ττ Process in Pb+Pb Collisions and Constraints on the τ-Lepton Anomalous Magnetic Moment with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 131(15). doi: 10.1103/PhysRevLett.131.151802. Full text in Research Archive
Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Potti, H.; Ruggeri, T.A. & Ting, E.X.L. [Show all 2,866 contributors for this article] (2023). Search for displaced photons produced in exotic decays of the Higgs boson using 13 TeV pp collisions with the ATLAS detector. Physical Review D. ISSN 2470-0010. 108(3). doi: 10.1103/PhysRevD.108.032016. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,820 contributors for this article] (2023). Search for periodic signals in the dielectron and diphoton invariant mass spectra using 139 fb−1 of pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(10). doi: 10.1007/JHEP10(2023)079. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abidi, S.H.; Aboulhorma, A. & Abramowicz, H. [Show all 2,770 contributors for this article] (2023). Model-independent search for the presence of new physics in events including H → γγ with √s = 13 TeV pp data recorded by the ATLAS detector at the LHC. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)176. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,791 contributors for this article] (2023). Search for a new scalar resonance in flavour-changing neutral-current top-quark decays t → qX (q = u, c), with X → bb¯ , in proton-proton collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)199.
Amerl, M.; Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Potti, H. & Ruggeri, T.A. [Show all 2,891 contributors for this article] (2023). Anomaly detection search for new resonances decaying into a Higgs boson and a generic new particle X in hadronic final states using √ s = 13 TeV pp collisions with the ATLAS detector. Physical Review D. ISSN 2470-0010. 108(5). doi: 10.1103/PhysRevD.108.052009. Full text in Research Archive
Jackson, P.; Kong, A.X.Y.; Potti, H.; Ruggeri, T.A.; Sharma, A.S. & Ting, E.X.L. [Show all 2,867 contributors for this article] (2023). Search for flavor-changing neutral-current couplings between the top quark and the Z boson with proton-proton collisions at √ s = 13 TeV with the ATLAS detector. Physical Review D. ISSN 2470-0010. 108(3). doi: 10.1103/PhysRevD.108.032019. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,920 contributors for this article] (2023). Observation of an Excess of Dicharmonium Events in the Four-Muon Final State with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 131(15). doi: 10.1103/PhysRevLett.131.151902. Full text in Research Archive
Jackson, P.; Kong, A.X.Y.; Potti, H.; Ruggeri, T.A.; Sharma, A.S. & White, M.J. [Show all 2,865 contributors for this article] (2023). Search for the charged-lepton-flavor-violating decay Z→eμ in pp collisions at √ s = 13 TeV with the ATLAS detector. Physical Review D. ISSN 2470-0010. 108(3). doi: 10.1103/PhysRevD.108.032015. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,821 contributors for this article] (2023). Search for leptoquarks decaying into the bτ final state in pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(10). doi: 10.1007/JHEP10(2023)001. Full text in Research Archive
Amerl, M.; Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Potti, H. & Ruggeri, T.A. [Show all 2,890 contributors for this article] (2023). Search in diphoton and dielectron final states for displaced production of Higgs or Z bosons with the ATLAS detector in √ s = 13 TeV pp collisions. Physical Review D. ISSN 2470-0010. 108(1). doi: 10.1103/PhysRevD.108.012012. Full text in Research Archive
Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Potti, H.; Ruggeri, T.A. & Ting, E.X.L. [Show all 2,854 contributors for this article] (2023). Measurement of the production of a W boson in association with a charmed hadron in pp collisions at √s = 13 TeV with the ATLAS detector. Physical Review D. ISSN 2470-0010. 108(3). doi: 10.1103/PhysRevD.108.032012. Full text in Research Archive
Jackson, P.; Oliver, J.L.; Petridis, A.; Qureshi, A.; Sharma, A.S. & White, M.J. [Show all 2,861 contributors for this article] (2023). Measurement of the inclusive tt¯ production cross section in the lepton+jets channel in pp collisions at √ s = 7 TeV with the ATLAS detector using support vector machines. Physical Review D. ISSN 2470-0010. 108(3). doi: 10.1103/PhysRevD.108.032014. Full text in Research Archive
Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Potti, H.; Ruggeri, T.A. & Ting, E.X.L. [Show all 2,836 contributors for this article] (2023). Measurements of Higgs boson production by gluon-gluon fusion and vector-boson fusion using H→WW*→eνμν decays in pp collisions at √ s = 13 TeV with the ATLAS detector. Physical Review D. ISSN 2470-0010. 108(3). doi: 10.1103/PhysRevD.108.032005. Full text in Research Archive
Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Potti, H.; Ruggeri, T.A. & Ting, E.X.L. [Show all 2,856 contributors for this article] (2023). Measurements of the suppression and correlations of dijets in Xe+Xe collisions at √sNN = 5.44 TeV. Physical Review C. ISSN 2469-9985. 108(2). doi: 10.1103/PhysRevC.108.024906. Full text in Research Archive
Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Potti, H.; Ruggeri, T.A. & Ting, E.X.L. [Show all 2,868 contributors for this article] (2023). Strong Constraints on Jet Quenching in Centrality-Dependent p+Pb Collisions at 5.02 TeV from ATLAS. Physical Review Letters. ISSN 0031-9007. 131(7). doi: 10.1103/PhysRevLett.131.072301. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abidi, S.H.; Aboulhorma, A. & Abramowicz, H. [Show all 2,834 contributors for this article] (2023). Evidence of off-shell Higgs boson production from ZZ leptonic decay channels and constraints on its total width with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 846. doi: 10.1016/j.physletb.2023.138223. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,890 contributors for this article] (2023). Search for pairs of muons with small displacements in pp collisions at s=13 TeV with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 846. doi: 10.1016/j.physletb.2023.138172. Full text in Research Archive
Jackson, P.; Kong, A.X.Y.; Oliver, J.L.; Ruggeri, T.A.; Sharma, A.S. & White, M.J. [Show all 2,884 contributors for this article] (2023). Measurement of cross sections for production of a Z boson in association with a flavor-inclusive or doubly b-tagged large-radius jet in proton-proton collisions at √ s = 13 with the ATLAS experiment. Physical Review D. ISSN 2470-0010. 108(1). doi: 10.1103/PhysRevD.108.012022. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abed Abud, Abud; Abeling, K. & Abhayasinghe, D.K. [Show all 2,747 contributors for this article] (2023). Search for light long-lived neutral particles that decay to collimated pairs of leptons or light hadrons in pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(6). doi: 10.1007/JHEP06(2023)153. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,820 contributors for this article] (2023). Evidence for the charge asymmetry in pp → tt production at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(8). doi: 10.1007/JHEP08(2023)077. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,881 contributors for this article] (2023). Measurements of W+W- production in decay topologies inspired by searches for electroweak supersymmetry. European Physical Journal C. ISSN 1434-6044. 83(8). doi: 10.1140/epjc/s10052-023-11508-9. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abed Abud, Abud; Abeling, K. & Abhayasinghe, D.K. [Show all 2,847 contributors for this article] (2023). Search for Heavy Neutral Leptons in Decays of W Bosons Using a Dilepton Displaced Vertex in sqrt[s]=13 TeV pp Collisions with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 131(6). doi: 10.1103/PhysRevLett.131.061803.
Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Potti, H.; Ruggeri, T.A. & Ting, E.X.L. [Show all 3,205 contributors for this article] (2023). Measurement of substructure-dependent jet suppression in Pb+Pb collisions at 5.02 TeV with the ATLAS detector. Physical Review C. ISSN 2469-9985. 107(5). doi: 10.1103/PhysRevC.107.054909. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,929 contributors for this article] (2023). Observation of four-top-quark production in the multilepton final state with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 83(6). doi: 10.1140/epjc/s10052-023-11573-0. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,925 contributors for this article] (2023). Test of CP Invariance in Higgs Boson Vector-Boson-Fusion Production Using the H→γγ Channel with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 131(6). doi: 10.1103/PhysRevLett.131.061802. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,928 contributors for this article] (2023). Calibration of the light-flavour jet mistagging efficiency of the b-tagging algorithms with Z+jets events using 139 fb - 1 of ATLAS proton–proton collision data at √s=13 TeV. European Physical Journal C. ISSN 1434-6044. 83(8). doi: 10.1140/epjc/s10052-023-11736-z. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,911 contributors for this article] (2023). Search for pair-produced vector-like top and bottom partners in events with large missing transverse momentum in pp collisions with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 83(8). doi: 10.1140/epjc/s10052-023-11790-7. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,926 contributors for this article] (2023). Measurement of Zγγ production in pp collisions at √s=13 TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 83(6). doi: 10.1140/epjc/s10052-023-11579-8. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,935 contributors for this article] (2023). Measurements of observables sensitive to colour reconnection in tt¯ events with the ATLAS detector at √s= 13 TeV. European Physical Journal C. ISSN 1434-6044. 83(6). doi: 10.1140/epjc/s10052-023-11479-x. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,780 contributors for this article] (2023). Search for pair-produced scalar and vector leptoquarks decaying into third-generation quarks and first- or second-generation leptons in pp collisions with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(6). doi: 10.1007/JHEP06(2023)188. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,821 contributors for this article] (2023). Search for long-lived, massive particles in events with displaced vertices and multiple jets in pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(6). doi: 10.1007/JHEP06(2023)200. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,930 contributors for this article] (2023). Search for Majorana neutrinos in same-sign WW scattering events from pp collisions at √s=13 TeV. European Physical Journal C. ISSN 1434-6044. 83(9). doi: 10.1140/epjc/s10052-023-11915-y. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,781 contributors for this article] (2023). Search for tt¯ H/ A→ tt¯ tt¯ production in the multilepton final state in proton–proton collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)203. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,884 contributors for this article] (2023). Comparison of inclusive and photon-tagged jet suppression in 5.02 TeV Pb+Pb collisions with ATLAS. Physics Letters B. ISSN 0370-2693. 846. doi: 10.1016/j.physletb.2023.138154.
Aad, G.; Abbott, B.; Abbott, D.C.; Abud, A. Abed; Abeling, K. & Abhayasinghe, D.K. [Show all 2,856 contributors for this article] (2023). Searches for new phenomena in events with two leptons, jets, and missing transverse momentum in 139 fb - 1 of √s=13 TeV pp collisions with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 83(6). doi: 10.1140/epjc/s10052-023-11434-w. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,815 contributors for this article] (2023). Search for an axion-like particle with forward proton scattering in association with photon pairs at ATLAS. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)234. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,923 contributors for this article] (2023). ATLAS flavour-tagging algorithms for the LHC Run 2 pp collision dataset. European Physical Journal C. ISSN 1434-6044. 83(7). doi: 10.1140/epjc/s10052-023-11699-1. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abdinov, O.; Abeling, K. & Abhayasinghe, D.K. [Show all 2,921 contributors for this article] (2023). Measurement of muon pairs produced via γγ scattering in nonultraperipheral Pb + Pb collisions at √sNN = 5.02 TeV with the ATLAS detector. Physical Review C. ISSN 2469-9985. 107(5). doi: 10.1103/PhysRevC.107.054907. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,892 contributors for this article] (2023). Correlations between flow and transverse momentum in Xe + Xe and Pb + Pb collisions at the LHC with the ATLAS detector: A probe of the heavy-ion initial state and nuclear deformation. Physical Review C. ISSN 2469-9985. 107(5). doi: 10.1103/PhysRevC.107.054910. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,849 contributors for this article] (2023). Production of ϒ(nS) mesons in Pb + Pb and pp collisions at 5.02 TeV. Physical Review C. ISSN 2469-9985. 107(5). doi: 10.1103/PhysRevC.107.054912. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,897 contributors for this article] (2023). Search for resonant WZ production in the fully leptonic final state in proton–proton collisions at √s=13 TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 83(7). doi: 10.1140/epjc/s10052-023-11437-7. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Aboulhorma, A. & Abramowicz, H. [Show all 2,820 contributors for this article] (2023). Measurements of Zγ+jets differential cross sections in pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)072. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,891 contributors for this article] (2023). Measurement of the polarisation of W bosons produced in top-quark decays using dilepton events at s=13 TeV with the ATLAS experiment. Physics Letters B. ISSN 0370-2693. 843. doi: 10.1016/j.physletb.2023.137829. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,790 contributors for this article] (2023). Search for boosted diphoton resonances in the 10 to 70 GeV mass range using 138 fb −1 of 13 TeV pp collisions with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)155. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abed Abud, Abud; Abeling, K. & Abhayasinghe, D.K. [Show all 2,954 contributors for this article] (2023). Measurements of the suppression and correlations of dijets in Pb+Pb collisions at√s<inf>NN</inf> = 5.02 TeV. Physical Review C. ISSN 2469-9985. 107(5). doi: 10.1103/PhysRevC.107.054908. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,886 contributors for this article] (2023). Measurement of the Higgs boson mass in the H → ZZ⁎ → 4ℓ decay channel using 139 fb−1 of s=13 TeV pp collisions recorded by the ATLAS detector at the LHC. Physics Letters B. ISSN 0370-2693. 843. doi: 10.1016/j.physletb.2023.137880. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Aboulhorma, A. & Abramowicz, H. [Show all 2,809 contributors for this article] (2023). Search for third-generation vector-like leptons in pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)118. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,828 contributors for this article] (2023). Search for dark photons from Higgs boson decays via ZH production with a photon plus missing transverse momentum signature from pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)133. Full text in Research Archive
Aad, G.; Abbott, B.; Abeling, K.; Abidi, S.H.; Aboulhorma, A. & Abramowicz, H. [Show all 2,767 contributors for this article] (2023). Determination of the strong coupling constant from transverse energy-energy correlations in multijet events at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)085. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,820 contributors for this article] (2023). Searches for lepton-flavour-violating decays of the Higgs boson into eτ and μτ in √s = 13 TeV pp collisions with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)166. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abed Abud, Abud; Abeling, K. & Abhayasinghe, D.K. [Show all 2,915 contributors for this article] (2023). Observation of electroweak production of two jets and a Z-boson pair. Nature Physics. ISSN 1745-2473. 19(2), p. 237–253. doi: 10.1038/s41567-022-01757-y.
Aad, G.; Abbott, B.; Abeling, K.; Abidi, S.H.; Aboulhorma, A. & Abramowicz, H. [Show all 2,769 contributors for this article] (2023). Charged-hadron production in pp, p+Pb, Pb+Pb, and Xe+Xe collisions at √sNN = 5 TeV with the ATLAS detector at the LHC. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)074. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abed Abud, Abud; Abeling, K. & Abhayasinghe, D.K. [Show all 2,787 contributors for this article] (2023). Search for high-mass Wγ and Zγ resonances using hadronic W/Z boson decays from 139 fb −1 of pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)125. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,887 contributors for this article] (2023). Observation of gauge boson joint-polarisation states in W±Z production from pp collisions at s=13 TeV with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 843. doi: 10.1016/j.physletb.2023.137895. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,889 contributors for this article] (2023). Constraints on the Higgs boson self-coupling from single- and double-Higgs production with the ATLAS detector using pp collisions at s=13 TeV. Physics Letters B. ISSN 0370-2693. 843. doi: 10.1016/j.physletb.2023.137745. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,916 contributors for this article] (2023). Searches for exclusive Higgs and Z boson decays into a vector quarkonium state and a photon using 139 fb - 1 of ATLAS √s=13 TeV proton–proton collision data. European Physical Journal C. ISSN 1434-6044. 83(9). doi: 10.1140/epjc/s10052-023-11869-1. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,927 contributors for this article] (2023). Measurement of exclusive pion pair production in proton–proton collisions at √s=7TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 83(7). doi: 10.1140/epjc/s10052-023-11700-x. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,798 contributors for this article] (2023). Search for dark matter produced in association with a dark Higgs boson decaying into W+ W− in the one-lepton final state at √s = 13 TeV using 139 fb −1 of pp collisions recorded with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)116. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,820 contributors for this article] (2023). Search for a new Z′ gauge boson in 4μ events with the ATLAS experiment. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(7). doi: 10.1007/JHEP07(2023)090. Full text in Research Archive
Aad, G.; Abbott, B.; Abbott, D.C.; Abed Abud, Abud; Abeling, K. & Abidi, S.H. [Show all 2,836 contributors for this article] (2023). Search for flavour-changing neutral-current couplings between the top quark and the photon with the ATLAS detector at s=13 TeV. Physics Letters B. ISSN 0370-2693. 842. doi: 10.1016/j.physletb.2022.137379. Full text in Research Archive

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Read, Alexander Lincoln; Raklev, Are & Rye, Eli Bæverfjord (2024). Utfordres standardmodellen av «det opprørske myonet»? Show summary
Eksperimentet «Muon g-2» ved Fermilab i USA har holdt på i flere år. Her studerer man myonet, en elementærpartikkel som er en slags tyngre utgave av elektronet. Og det man finner er at disse myonene ikke oppfører seg helt som forventet. Forsøkene viser nemlig at myonene har et ørlite avvik i magnetisk dipolmoment i forhold til hva teorien i standardmodellen forutsier. Resultatene fra eksperimentene avviker så mye at forskjellen sannsynligvis ikke er tilfeldig, det trengs ny fysikk for å forklare den. Dette kan få konsekvenser for hele standardmodellen. Lurer du på om dette får noen konsekvenser for fysikken du underviser? Vi har invitert Alexander Read, Are Raklev og Eli Bæverfjord Rye, alle fra Fysisk Institutt på UiO, til å presentere og diskutere resultater og implikasjoner av nevnte eksperimenter.
Aaboud, M.; Aad, G.; Abbott, B.; Abdinov, O.; Abeloos, B. & Abidi, S.H. [Show all 2,903 contributors for this article] (2023). Erratum to: Search for exclusive Higgs and Z boson decays to ϕγ and ργ with the ATLAS detector (Journal of High Energy Physics, (2018), 2018, 7, (127), 10.1007/JHEP07(2018)127). Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2023(12). doi: 10.1007/JHEP12(2023)158.
Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,902 contributors for this article] (2023). Author Correction: A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery (Nature, (2022), 607, 7917, (52-59), 10.1038/s41586-022-04893-w). Nature. ISSN 0028-0836. 623(7985). doi: 10.1038/s41586-023-06248-5.
Jakobsen, Hanne Østli; Read, Alexander Lincoln; Raklev, Are; Moldfjell, Stine & Huigen, Micha (2023). Ser vi første glimt av helt ny fysikk? [Newspaper]. Morgenbladet. Show summary
Elementærpartikkelen myonet oppfører seg bittelitt merkelig. Det kan velte om på universets lover.
Melteig, Elina; Raklev, Are & Read, Alexander Lincoln (2023). Går verden under neste torsdag? [Internet]. forskning.no. Show summary
For om lag ti år siden oppdaget forskere at grunnleggende egenskaper ved universet er ustabile. Fremdeles vet de lite om hvorfor.
Ananiev, Viktor & Read, Alexander Lincoln (2023). SigCorr. Show summary
SigCorr is a framework that implements a wide range of tools to conduct studies of the trials factor, which is an important parameter in the statistical characterization of searches for new phenonema, such as a hypothetical elementary particle or astrophysical source. Such searches are commonly carried out for a range of possible signal hypotheses. The statistical significance of the most significant observation (generally a localized excess of data in a broad background distribution) must take into account the possibility that the background could have fluctuated anywhere in the search region, not just at the point of maximum interest. Taking into account this so-called «look-elsewhere effect» is performed by correcting the corresponding p-value from its local to a global value. The ratio of the former to the latter is known in the statistical literature as the trials factor.