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Article: Search for flavour-changing neutral-current couplings between the top quark and the photon with the ATLAS detector at & RADIC;s=13 TeV

TitleSearch for flavour-changing neutral-current couplings between the top quark and the photon with the ATLAS detector at & RADIC;s=13 TeV
Authors
Aad, GAbbott, BAbbott, DCAbud, AAAbeling, KAbhayasinghe, DKAbidi, SHAbouZeid, OSAbraham, NLAbramowicz, HAbreu, HAbulaiti, YAcharya, BSAchkar, BAdachi, SAdam, LAdam, BCAdamczyk, LAdamek, LAdelman, JAdersberger, MAdiguzel, AAdorni, SAdye, TAffolder, AAAfik, YAgapopoulou, CAgaras, MNAggarwal, AAgheorghiesei, CAguilar-Saavedra, JAAhmadov, FAhmed, WSAi, XAielli, GAkatsuka, SAkesson, TPAAkilli, EAkimov, AVAl, Khoury KAlberghi, GLAlbert, JVerzini, MJAAlderweireldt, SAleksa, MAleksandrov, INAlexa, CAlexopoulos, TAlfonsi, AAlfonsi, FAlhroob, MAli, BAliev, MAlimonti, GAllaire, CAllbrooke, BMMAllen, BWAllport, PPAloisio, AAlonso, FAlpigiani, CAlshehri, AACamelia, EAEstevez, MAAlviggi, MGCoutinho, YAAmbler, AAmbroz, LAmelung, CAmidei, DDos, Santos SPAAmoroso, SAmrouche, CSAn, FAnastopoulos, CAndari, NAndeen, TAnders, CFAnders, JKAndreazza, AAndrei, VAnelli, CRAngelidakis, SAngerami, AAnisenkov, AVAnnovi, AAntel, CAnthony, MTAntipov, EAntonelli, MAntrim, DJAAnulli, FAoki, MPozo, JAABella, LAAraque, JPFerraz, VAPereira, RAArcangeletti, CArce, ATHArduh, FAArguin, JFArgyropoulos, SArling, JHArmbruster, AJArmstrong, AArnaez, OArnold, HTame, ZPAArtoni, GArtz, SAsai, SAsawatavonvanich, TAsbah, NAsimakopoulou, EMAsquith, LAssahsah, JAssamagan, KAstalos, RAtkin, RJAtkinson, MAtlay, NBAtmani, HAugsten, KAvolio, GAyoub, MKAzuelos, GBachacou, HBachas, KBackes, MBackman, FBagnaia, PBahmani, MBahrasemani, HBailey, AJBailey, VRBaines, JTBakalis, CBaker, OKBakker, PJGupta, DBBalaji, SBaldin, EMBalek, PBalli, FBalunas, WKBalz, JBanas, EBandyopadhyay, ABanerjee, SBannoura, AAEBarak, LBarbe, WMBarberio, ELBarberis, DBarbero, MBarbour, GBarillari, TBarisits, MSBarkeloo, JBarklow, TBarnea, RBarnett, BMBarnett, RMBarnovska-Blenessy, ZBaroncelli, ABarone, GBarr, AJBarranco, NLBarreiro, Fda Costa, JBGBarsov, SBartoldus, RBartolini, GBarton, AEBartos, PBasalaev, ABasan, ABassalat, ABasso, MJBates, RLBatlamous, SBatley, JRBatool, BBattaglia, MBauce, MBauer, FBauer, KTBawa, HSBeacham, JBBeau, TBeauchemin, PHBecherer, FBechtle, PBeck, HCBeck, HPBecker, KBecot, CBeddall, ABeddall, AJBednyakov, VABedognetti, MBeermann, TABegalli, MBegel, MBehera, ABehr, JKBeisiegel, FBell, ASBella, GBellagamba, LBellerive, ABellos, PBeloborodov, KBelotskiy, KBelyaev, NLBenchekroun, DBenekos, NBenhammou, YBenjamin, DPBenoit, MBensinger, JRBentvelsen, SBeresford, LBeretta, MBerge, DKuutmann, EBTu, YanjunHuang, ShuhuiPeng, ChenParedes Hernandez, Daniela KatherinneTam, Kai Chunget al.
Issue Date10-Jul-2023
PublisherElsevier
Citation
Physics Letters B, 2023, v. 842, p. 1-22 How to Cite?
AbstractThis letter documents a search for flavour-changing neutral currents (FCNCs), which are strongly sup-pressed 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 & RADIC;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 ex-cess 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. The 95% CL bounds on the branching fractions for the FCNC top-quark decays, estimated (expected) from both top-quark production and decay, are B(t & RARR; u & gamma; ) < 0.85 (0.88+0.37 -0.25) x 10-5 and B(t & RARR; c & gamma; ) < 4.2 (3.40+1.35-0.95) x 10-5 for a left-handed tq & gamma; cou-pling, and B(t & RARR; u & gamma; ) < 1.2 (1.20+0.50 -0.33) x10-5 and B(t & RARR; c & gamma; ) < 4.5 (3.70+1.47 -1.03) x10-5 for a right-handed coupling. & COPY; 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.
Persistent Identifierhttp://hdl.handle.net/10722/338466
ISSN
2023 Impact Factor: 4.3
2023 SCImago Journal Rankings: 1.593
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorAad, G-
dc.contributor.authorAbbott, B-
dc.contributor.authorAbbott, DC-
dc.contributor.authorAbud, AA-
dc.contributor.authorAbeling, K-
dc.contributor.authorAbhayasinghe, DK-
dc.contributor.authorAbidi, SH-
dc.contributor.authorAbouZeid, OS-
dc.contributor.authorAbraham, NL-
dc.contributor.authorAbramowicz, H-
dc.contributor.authorAbreu, H-
dc.contributor.authorAbulaiti, Y-
dc.contributor.authorAcharya, BS-
dc.contributor.authorAchkar, B-
dc.contributor.authorAdachi, S-
dc.contributor.authorAdam, L-
dc.contributor.authorAdam, BC-
dc.contributor.authorAdamczyk, L-
dc.contributor.authorAdamek, L-
dc.contributor.authorAdelman, J-
dc.contributor.authorAdersberger, M-
dc.contributor.authorAdiguzel, A-
dc.contributor.authorAdorni, S-
dc.contributor.authorAdye, T-
dc.contributor.authorAffolder, AA-
dc.contributor.authorAfik, Y-
dc.contributor.authorAgapopoulou, C-
dc.contributor.authorAgaras, MN-
dc.contributor.authorAggarwal, A-
dc.contributor.authorAgheorghiesei, C-
dc.contributor.authorAguilar-Saavedra, JA-
dc.contributor.authorAhmadov, F-
dc.contributor.authorAhmed, WS-
dc.contributor.authorAi, X-
dc.contributor.authorAielli, G-
dc.contributor.authorAkatsuka, S-
dc.contributor.authorAkesson, TPA-
dc.contributor.authorAkilli, E-
dc.contributor.authorAkimov, AV-
dc.contributor.authorAl, Khoury K-
dc.contributor.authorAlberghi, GL-
dc.contributor.authorAlbert, J-
dc.contributor.authorVerzini, MJA-
dc.contributor.authorAlderweireldt, S-
dc.contributor.authorAleksa, M-
dc.contributor.authorAleksandrov, IN-
dc.contributor.authorAlexa, C-
dc.contributor.authorAlexopoulos, T-
dc.contributor.authorAlfonsi, A-
dc.contributor.authorAlfonsi, F-
dc.contributor.authorAlhroob, M-
dc.contributor.authorAli, B-
dc.contributor.authorAliev, M-
dc.contributor.authorAlimonti, G-
dc.contributor.authorAllaire, C-
dc.contributor.authorAllbrooke, BMM-
dc.contributor.authorAllen, BW-
dc.contributor.authorAllport, PP-
dc.contributor.authorAloisio, A-
dc.contributor.authorAlonso, F-
dc.contributor.authorAlpigiani, C-
dc.contributor.authorAlshehri, AA-
dc.contributor.authorCamelia, EA-
dc.contributor.authorEstevez, MA-
dc.contributor.authorAlviggi, MG-
dc.contributor.authorCoutinho, YA-
dc.contributor.authorAmbler, A-
dc.contributor.authorAmbroz, L-
dc.contributor.authorAmelung, C-
dc.contributor.authorAmidei, D-
dc.contributor.authorDos, Santos SPA-
dc.contributor.authorAmoroso, S-
dc.contributor.authorAmrouche, CS-
dc.contributor.authorAn, F-
dc.contributor.authorAnastopoulos, C-
dc.contributor.authorAndari, N-
dc.contributor.authorAndeen, T-
dc.contributor.authorAnders, CF-
dc.contributor.authorAnders, JK-
dc.contributor.authorAndreazza, A-
dc.contributor.authorAndrei, V-
dc.contributor.authorAnelli, CR-
dc.contributor.authorAngelidakis, S-
dc.contributor.authorAngerami, A-
dc.contributor.authorAnisenkov, AV-
dc.contributor.authorAnnovi, A-
dc.contributor.authorAntel, C-
dc.contributor.authorAnthony, MT-
dc.contributor.authorAntipov, E-
dc.contributor.authorAntonelli, M-
dc.contributor.authorAntrim, DJA-
dc.contributor.authorAnulli, F-
dc.contributor.authorAoki, M-
dc.contributor.authorPozo, JAA-
dc.contributor.authorBella, LA-
dc.contributor.authorAraque, JP-
dc.contributor.authorFerraz, VA-
dc.contributor.authorPereira, RA-
dc.contributor.authorArcangeletti, C-
dc.contributor.authorArce, ATH-
dc.contributor.authorArduh, FA-
dc.contributor.authorArguin, JF-
dc.contributor.authorArgyropoulos, S-
dc.contributor.authorArling, JH-
dc.contributor.authorArmbruster, AJ-
dc.contributor.authorArmstrong, A-
dc.contributor.authorArnaez, O-
dc.contributor.authorArnold, H-
dc.contributor.authorTame, ZPA-
dc.contributor.authorArtoni, G-
dc.contributor.authorArtz, S-
dc.contributor.authorAsai, S-
dc.contributor.authorAsawatavonvanich, T-
dc.contributor.authorAsbah, N-
dc.contributor.authorAsimakopoulou, EM-
dc.contributor.authorAsquith, L-
dc.contributor.authorAssahsah, J-
dc.contributor.authorAssamagan, K-
dc.contributor.authorAstalos, R-
dc.contributor.authorAtkin, RJ-
dc.contributor.authorAtkinson, M-
dc.contributor.authorAtlay, NB-
dc.contributor.authorAtmani, H-
dc.contributor.authorAugsten, K-
dc.contributor.authorAvolio, G-
dc.contributor.authorAyoub, MK-
dc.contributor.authorAzuelos, G-
dc.contributor.authorBachacou, H-
dc.contributor.authorBachas, K-
dc.contributor.authorBackes, M-
dc.contributor.authorBackman, F-
dc.contributor.authorBagnaia, P-
dc.contributor.authorBahmani, M-
dc.contributor.authorBahrasemani, H-
dc.contributor.authorBailey, AJ-
dc.contributor.authorBailey, VR-
dc.contributor.authorBaines, JT-
dc.contributor.authorBakalis, C-
dc.contributor.authorBaker, OK-
dc.contributor.authorBakker, PJ-
dc.contributor.authorGupta, DB-
dc.contributor.authorBalaji, S-
dc.contributor.authorBaldin, EM-
dc.contributor.authorBalek, P-
dc.contributor.authorBalli, F-
dc.contributor.authorBalunas, WK-
dc.contributor.authorBalz, J-
dc.contributor.authorBanas, E-
dc.contributor.authorBandyopadhyay, A-
dc.contributor.authorBanerjee, S-
dc.contributor.authorBannoura, AAE-
dc.contributor.authorBarak, L-
dc.contributor.authorBarbe, WM-
dc.contributor.authorBarberio, EL-
dc.contributor.authorBarberis, D-
dc.contributor.authorBarbero, M-
dc.contributor.authorBarbour, G-
dc.contributor.authorBarillari, T-
dc.contributor.authorBarisits, MS-
dc.contributor.authorBarkeloo, J-
dc.contributor.authorBarklow, T-
dc.contributor.authorBarnea, R-
dc.contributor.authorBarnett, BM-
dc.contributor.authorBarnett, RM-
dc.contributor.authorBarnovska-Blenessy, Z-
dc.contributor.authorBaroncelli, A-
dc.contributor.authorBarone, G-
dc.contributor.authorBarr, AJ-
dc.contributor.authorBarranco, NL-
dc.contributor.authorBarreiro, F-
dc.contributor.authorda Costa, JBG-
dc.contributor.authorBarsov, S-
dc.contributor.authorBartoldus, R-
dc.contributor.authorBartolini, G-
dc.contributor.authorBarton, AE-
dc.contributor.authorBartos, P-
dc.contributor.authorBasalaev, A-
dc.contributor.authorBasan, A-
dc.contributor.authorBassalat, A-
dc.contributor.authorBasso, MJ-
dc.contributor.authorBates, RL-
dc.contributor.authorBatlamous, S-
dc.contributor.authorBatley, JR-
dc.contributor.authorBatool, B-
dc.contributor.authorBattaglia, M-
dc.contributor.authorBauce, M-
dc.contributor.authorBauer, F-
dc.contributor.authorBauer, KT-
dc.contributor.authorBawa, HS-
dc.contributor.authorBeacham, JB-
dc.contributor.authorBeau, T-
dc.contributor.authorBeauchemin, PH-
dc.contributor.authorBecherer, F-
dc.contributor.authorBechtle, P-
dc.contributor.authorBeck, HC-
dc.contributor.authorBeck, HP-
dc.contributor.authorBecker, K-
dc.contributor.authorBecot, C-
dc.contributor.authorBeddall, A-
dc.contributor.authorBeddall, AJ-
dc.contributor.authorBednyakov, VA-
dc.contributor.authorBedognetti, M-
dc.contributor.authorBeermann, TA-
dc.contributor.authorBegalli, M-
dc.contributor.authorBegel, M-
dc.contributor.authorBehera, A-
dc.contributor.authorBehr, JK-
dc.contributor.authorBeisiegel, F-
dc.contributor.authorBell, AS-
dc.contributor.authorBella, G-
dc.contributor.authorBellagamba, L-
dc.contributor.authorBellerive, A-
dc.contributor.authorBellos, P-
dc.contributor.authorBeloborodov, K-
dc.contributor.authorBelotskiy, K-
dc.contributor.authorBelyaev, NL-
dc.contributor.authorBenchekroun, D-
dc.contributor.authorBenekos, N-
dc.contributor.authorBenhammou, Y-
dc.contributor.authorBenjamin, DP-
dc.contributor.authorBenoit, M-
dc.contributor.authorBensinger, JR-
dc.contributor.authorBentvelsen, S-
dc.contributor.authorBeresford, L-
dc.contributor.authorBeretta, M-
dc.contributor.authorBerge, D-
dc.contributor.authorKuutmann, EB-
dc.contributor.authorTu, Yanjun-
dc.contributor.authorHuang, Shuhui-
dc.contributor.authorPeng, Chen-
dc.contributor.authorParedes Hernandez, Daniela Katherinne-
dc.contributor.authorTam, Kai Chung-
dc.contributor.authoret al.-
dc.date.accessioned2024-03-11T10:29:07Z-
dc.date.available2024-03-11T10:29:07Z-
dc.date.issued2023-07-10-
dc.identifier.citationPhysics Letters B, 2023, v. 842, p. 1-22-
dc.identifier.issn0370-2693-
dc.identifier.urihttp://hdl.handle.net/10722/338466-
dc.description.abstractThis letter documents a search for flavour-changing neutral currents (FCNCs), which are strongly sup-pressed 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 & RADIC;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 ex-cess 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. The 95% CL bounds on the branching fractions for the FCNC top-quark decays, estimated (expected) from both top-quark production and decay, are B(t & RARR; u & gamma; ) < 0.85 (0.88+0.37 -0.25) x 10-5 and B(t & RARR; c & gamma; ) < 4.2 (3.40+1.35-0.95) x 10-5 for a left-handed tq & gamma; cou-pling, and B(t & RARR; u & gamma; ) < 1.2 (1.20+0.50 -0.33) x10-5 and B(t & RARR; c & gamma; ) < 4.5 (3.70+1.47 -1.03) x10-5 for a right-handed coupling. & COPY; 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.-
dc.languageeng-
dc.publisherElsevier-
dc.relation.ispartofPhysics Letters B-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleSearch for flavour-changing neutral-current couplings between the top quark and the photon with the ATLAS detector at & RADIC;s=13 TeV-
dc.typeArticle-
dc.identifier.doi10.1016/j.physletb.2022.137379-
dc.identifier.scopuseid_2-s2.0-85146929561-
dc.identifier.volume842-
dc.identifier.spage1-
dc.identifier.epage22-
dc.identifier.eissn1873-2445-
dc.identifier.isiWOS:001023760300001-
dc.publisher.placeAMSTERDAM-
dc.identifier.issnl0370-2693-

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