Search for flavour-changing neutral-current couplings between the top quark and the photon with the ATLAS detector at √s=13 TeV
This letter documents a search for flavour-changing neutral currents (FCNCs), which are strongly suppressed in the Standard Model, in events with a photon and a top quark with the ATLAS detector. The analysis uses data collected in pp collisions at √s = 13 TeV during Run 2 of the LHC, corresponding...
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
10 July 2023
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| In: |
Physics letters
Year: 2023, Volume: 847, Pages: 1-22 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2022.137379 |
| Online Access: | Resolving-System, kostenfrei, Volltext: https://doi.org/10.1016/j.physletb.2022.137379 Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269322005135 
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| Author Notes: | the Atlas Collaboration: G. Aad, L.M. Baltes, F. Bartels, F.L. Castillo, M.M. Czurylo, F. Del Rio, M. Dunford, S. Franchino, A. Krishnan, M. Klassen, T. Mkrtchyan, P.S. Ott, D.F. Rassloff, S. Rodriguez Bosca, C. Sauer, A. Schoening, H.-C. Schultz-Coulon, V. Sothilingam, R. Stamen, P. Starovoitov, L. Vigani, S.M. Weber, M. Wessels, X. Yue, J. Zinsser ... [und 2849 weitere] |
MARC
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| 245 | 1 | 0 | |a Search for flavour-changing neutral-current couplings between the top quark and the photon with the ATLAS detector at √s=13 TeV |c the Atlas Collaboration: G. Aad, L.M. Baltes, F. Bartels, F.L. Castillo, M.M. Czurylo, F. Del Rio, M. Dunford, S. Franchino, A. Krishnan, M. Klassen, T. Mkrtchyan, P.S. Ott, D.F. Rassloff, S. Rodriguez Bosca, C. Sauer, A. Schoening, H.-C. Schultz-Coulon, V. Sothilingam, R. Stamen, P. Starovoitov, L. Vigani, S.M. Weber, M. Wessels, X. Yue, J. Zinsser ... [und 2849 weitere] |
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| 246 | 3 | 3 | |a Search for flavour-changing neutral-current couplings between the top quark and the photon with the ATLAS detector at squareroot s=13 TeV |
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| 520 | |a This letter documents a search for flavour-changing neutral currents (FCNCs), which are strongly suppressed in the Standard Model, in events with a photon and a top quark with the ATLAS detector. The analysis uses data collected in pp collisions at √s = 13 TeV during Run 2 of the LHC, corresponding to an integrated luminosity of 139 fb−1 . Both FCNC top-quark production and decay are considered. The final state consists of a charged lepton, missing transverse momentum, a b-tagged jet, one high-momentum photon and possibly additional jets. A multiclass deep neural network is used to classify events either as signal in one of the two categories, FCNC production or decay, or as background. No significant excess of events over the background prediction is observed and 95% CL upper limits are placed on the strength of left- and right-handed FCNC interactions ... | ||
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