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Article: Observation of four-top-quark production in the multilepton final state with the ATLAS detector

TitleObservation of four-top-quark production in the multilepton final state with the ATLAS detector
Authors
Aad, GAbbott, BAbbott, DCAbud, AAAbeling, KAbhayasinghe, DKAbidi, SHAbouZeid, OSAbraham, NLAbramowicz, HAbreu, HAbulaiti, YAcharya, BSAchkar, BAdachi, SAdam, LBourdarios, CAAdamczyk, LAdamek, LAdelman, JAdersberger, MAdiguzel, AAdorni, SAdye, TAffolder, AAAfik, YAgapopoulou, CAgaras, MNAggarwal, AAgheorghiesei, CAguilar-Saavedra, JAAhmadov, FAhmed, WSAi, XAielli, GAkatsuka, SÅkesson, TPAAkilli, EAkimov, AAl 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,Anelli, CRAngelidakis, SAngerami, AAnisenkov, AAnnovi, 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, AJNavarro, LBBarreiro, 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, EBBerger, NBergmann, BBergsten, LJBeringer, JBerlendis, SBernardi, GBernius, CBernlochner, FUBerry, TBerta, PBertella, CBertram, IABylund, OBBesson, NBethani, ABethke, SBetti, ABevan, AJBeyer, JBhattacharya, DSBhattarai, PBi, RBianchi, RMBiebel, OBiedermann, DBielski, RBierwagen, KBiesuz, NBiglietti, MBilloud, TRBindi, MBingul, ABini, CBiondi, SBirman, MBisanz, TBiswal, JPBiswas, DBitadze, ABittrich, CBjorke, KBlazek, TBloch,Blocker, CBlue, ABlumenschein, UBobbink, GJBobrovnikov, VSBocchetta, SSBocci, ABoerner, DBogavac, DBogdanchikov, AGBohm, CBoisvert,Bokan, PBold, TBolz, AEBomben, MBona, MBonilla, JSBoonekamp, MBooth, CDBorecka-Bielska, HMBorgna, LSBorisov, ABorissov, GBortfeldt, JBortoletto, DBoscherini, DBosman, MSola, JDBBouaouda, KBoudreau, JBouhova-Thacker, EHuang, SParedes Hernandez, DKTam, KCTu, Y
Issue Date12-Jun-2023
PublisherSpringerOpen
Citation
The European Physical Journal C, 2023, v. 83, n. 6, p. 1-35 How to Cite?
AbstractThis paper presents the observation of four-topquark (t (t) over bart (t) over bar) production in proton-proton collisions at the LHC. The analysis is performed using an integrated luminosity of 140 fb-1 at a centre-of-mass energy of 13 TeVcollected using the ATLAS detector. Events containing two leptons with the same electric charge or at least three leptons (electrons or muons) are selected. Event kinematics are used to separate signal from background through a multivariate discriminant, and dedicated control regions are used to constrain the dominant backgrounds. The observed (expected) significance of themeasured t (t) over bart (t) over bar signal with respect to the standard model (SM) background-only hypothesis is 6.1 (4.3) standard deviations. The t (t) over bart (t) over bar production cross section is measured to be 22.5(-5.5)(+6.6), consistent with the SM prediction of 12.0 +/- 2.4 fb within 1.8 standard deviations. Data are also used to set limits on the three-top-quark production cross section, being an irreducible background not measured previously, and to constrain the top-Higgs Yukawa coupling and effective field theory operator coefficients that affect t (t) over bart (t) over bar production.
Persistent Identifierhttp://hdl.handle.net/10722/339035
ISSN
2023 Impact Factor: 4.2
2023 SCImago Journal Rankings: 1.451
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.authorBourdarios, CA-
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.authorÅkesson, TPA-
dc.contributor.authorAkilli, E-
dc.contributor.authorAkimov, A-
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-
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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-
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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,-
dc.contributor.authorAnelli, CR-
dc.contributor.authorAngelidakis, S-
dc.contributor.authorAngerami, A-
dc.contributor.authorAnisenkov, A-
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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-
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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.authorNavarro, LB-
dc.contributor.authorBarreiro, F-
dc.contributor.authorda Costa, JBG-
dc.contributor.authorBarsov, S-
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dc.contributor.authorBartolini, G-
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dc.contributor.authorBartos, P-
dc.contributor.authorBasalaev, A-
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dc.contributor.authorBassalat, A-
dc.contributor.authorBasso, MJ-
dc.contributor.authorBates, RL-
dc.contributor.authorBatlamous, S-
dc.contributor.authorBatley, JR-
dc.contributor.authorBatool, B-
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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.authorBerger, N-
dc.contributor.authorBergmann, B-
dc.contributor.authorBergsten, LJ-
dc.contributor.authorBeringer, J-
dc.contributor.authorBerlendis, S-
dc.contributor.authorBernardi, G-
dc.contributor.authorBernius, C-
dc.contributor.authorBernlochner, FU-
dc.contributor.authorBerry, T-
dc.contributor.authorBerta, P-
dc.contributor.authorBertella, C-
dc.contributor.authorBertram, IA-
dc.contributor.authorBylund, OB-
dc.contributor.authorBesson, N-
dc.contributor.authorBethani, A-
dc.contributor.authorBethke, S-
dc.contributor.authorBetti, A-
dc.contributor.authorBevan, AJ-
dc.contributor.authorBeyer, J-
dc.contributor.authorBhattacharya, DS-
dc.contributor.authorBhattarai, P-
dc.contributor.authorBi, R-
dc.contributor.authorBianchi, RM-
dc.contributor.authorBiebel, O-
dc.contributor.authorBiedermann, D-
dc.contributor.authorBielski, R-
dc.contributor.authorBierwagen, K-
dc.contributor.authorBiesuz, N-
dc.contributor.authorBiglietti, M-
dc.contributor.authorBilloud, TR-
dc.contributor.authorBindi, M-
dc.contributor.authorBingul, A-
dc.contributor.authorBini, C-
dc.contributor.authorBiondi, S-
dc.contributor.authorBirman, M-
dc.contributor.authorBisanz, T-
dc.contributor.authorBiswal, JP-
dc.contributor.authorBiswas, D-
dc.contributor.authorBitadze, A-
dc.contributor.authorBittrich, C-
dc.contributor.authorBjorke, K-
dc.contributor.authorBlazek, T-
dc.contributor.authorBloch,-
dc.contributor.authorBlocker, C-
dc.contributor.authorBlue, A-
dc.contributor.authorBlumenschein, U-
dc.contributor.authorBobbink, GJ-
dc.contributor.authorBobrovnikov, VS-
dc.contributor.authorBocchetta, SS-
dc.contributor.authorBocci, A-
dc.contributor.authorBoerner, D-
dc.contributor.authorBogavac, D-
dc.contributor.authorBogdanchikov, AG-
dc.contributor.authorBohm, C-
dc.contributor.authorBoisvert,-
dc.contributor.authorBokan, P-
dc.contributor.authorBold, T-
dc.contributor.authorBolz, AE-
dc.contributor.authorBomben, M-
dc.contributor.authorBona, M-
dc.contributor.authorBonilla, JS-
dc.contributor.authorBoonekamp, M-
dc.contributor.authorBooth, CD-
dc.contributor.authorBorecka-Bielska, HM-
dc.contributor.authorBorgna, LS-
dc.contributor.authorBorisov, A-
dc.contributor.authorBorissov, G-
dc.contributor.authorBortfeldt, J-
dc.contributor.authorBortoletto, D-
dc.contributor.authorBoscherini, D-
dc.contributor.authorBosman, M-
dc.contributor.authorSola, JDB-
dc.contributor.authorBouaouda, K-
dc.contributor.authorBoudreau, J-
dc.contributor.authorBouhova-Thacker, E-
dc.contributor.authorHuang, S-
dc.contributor.authorParedes Hernandez, DK-
dc.contributor.authorTam, KC-
dc.contributor.authorTu, Y-
dc.date.accessioned2024-03-11T10:33:23Z-
dc.date.available2024-03-11T10:33:23Z-
dc.date.issued2023-06-12-
dc.identifier.citationThe European Physical Journal C, 2023, v. 83, n. 6, p. 1-35-
dc.identifier.issn1434-6044-
dc.identifier.urihttp://hdl.handle.net/10722/339035-
dc.description.abstractThis paper presents the observation of four-topquark (t (t) over bart (t) over bar) production in proton-proton collisions at the LHC. The analysis is performed using an integrated luminosity of 140 fb-1 at a centre-of-mass energy of 13 TeVcollected using the ATLAS detector. Events containing two leptons with the same electric charge or at least three leptons (electrons or muons) are selected. Event kinematics are used to separate signal from background through a multivariate discriminant, and dedicated control regions are used to constrain the dominant backgrounds. The observed (expected) significance of themeasured t (t) over bart (t) over bar signal with respect to the standard model (SM) background-only hypothesis is 6.1 (4.3) standard deviations. The t (t) over bart (t) over bar production cross section is measured to be 22.5(-5.5)(+6.6), consistent with the SM prediction of 12.0 +/- 2.4 fb within 1.8 standard deviations. Data are also used to set limits on the three-top-quark production cross section, being an irreducible background not measured previously, and to constrain the top-Higgs Yukawa coupling and effective field theory operator coefficients that affect t (t) over bart (t) over bar production.-
dc.languageeng-
dc.publisherSpringerOpen-
dc.relation.ispartofThe European Physical Journal C-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleObservation of four-top-quark production in the multilepton final state with the ATLAS detector-
dc.typeArticle-
dc.identifier.doi10.1140/epjc/s10052-023-11573-0-
dc.identifier.scopuseid_2-s2.0-85164151361-
dc.identifier.volume83-
dc.identifier.issue6-
dc.identifier.spage1-
dc.identifier.epage35-
dc.identifier.eissn1434-6052-
dc.identifier.isiWOS:001060591500001-
dc.publisher.placeNEW YORK-
dc.identifier.issnl1434-6044-

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