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Article: Search for t(t)over-barH/A → t(t)over-bart(t)over-bar production in the multilepton final state in proton-proton collisions at √s=13 TeV with the ATLAS detector

TitleSearch for t(t)over-barH/A → t(t)over-bart(t)over-bar production in the multilepton final state in proton-proton collisions at √s=13 TeV with the ATLAS detector
Authors
Aad, GAbbott, BAbbott, DCAbeling, KAbidi, SHAboulhorma, AAbramowicz, HAbreu, HAbulaiti, YAbusleme Hoffman, ACAcharya, BSAchkar, BAdam, LAdam Bourdarios, CAdamczyk, LAdamek, LAddepalli, SVAdelman, JAdiguzel, AAdorni, SAdye, TAffolder, AAAfik, YAgaras, MNAgarwala, JAggarwal, AAgheorghiesei, CAguilar-Saavedra, JAAhmad, AAhmadov, FAhmed, WSAi, XAielli, GAizenberg, IAkbiyik, MÅkesson, TPAAkimov, AVAl Khoury, KAlberghi, GLAlbert, JAlbicocco, PAlconada Verzini, MJAlderweireldt, SAleksa, MAleksandrov, INAlexa, CAlexopoulos, TAlfonsi, AAlfonsi, FAlhroob, MAli, BAli, SAliev, MAlimonti, GAllaire, CAllbrooke, BMMAllport, PPAloisio, AAlonso, FAlpigiani, CAlunno Camelia, EAlvarez Estevez, MAlviggi, MGAmaral Coutinho, YAmbler, AAmelung, CAmes, CGAmidei, DAmor Dos Santos, SPAmoroso, SAmos, KRAmrouche, CSAnaniev, VAnastopoulos, CAndari, NAndeen, TAnders, JKAndrean, SYAndreazza, AAngelidakis, SAngerami, AAnisenkov, AVAnnovi, AAntel, CAnthony, MTAntipov, EAntonelli, MAntrim, DJAAnulli, FAoki, MAparisi Pozo, JAAparo, MAAperio Bella, LAppelt, CAranzabal, NAraujo Ferraz, VArcangeletti, CArce, ATHArena, EArguin, JFArgyropoulos, SArling, JHArmbruster, AJArnaez, OArnold, HArrubarrena Tame, ZPArtoni, GAsada, HAsai, KAsai, SAsbah, NAAsimakopoulou, EMAssahsah, JAssamagan, KAstalos, RAtkin, RJAtkinson, MAtlay, NBAtmani, HAtmasiddha, PAAugsten, KAuricchio, SAuriol, ADAustrup, VAAvner, GAvolio, GAxiotis, KAyoub, MKAzuelos, GBabal, DBachacou, HBachas, KBachiu, ABackman, FBadea, ABagnaia, PBahmani, MBailey, AJBailey, VRBaines, JTBakalis, CBaker, OKBakker, PJBakos, EBakshi Gupta, DBalaji, SBalasubramanian, RBaldin, EMBalek, PBallabene, EBalli, FBaltes, LMBalunas, WKBalz, JBanas, EBandieramonte, MBandyopadhyay, ABansal, SBarak, LBarberio, ELBarberis, DBarbero, MBarbour, GBarends, KNBarillari, TBarisits, MSBarkeloo, JBarklow, TBarnett, RMBaron, PBaron Moreno, DABaroncelli, ABarone, GBarr, AJBarranco Navarro, LBarreiro, FBarreiro Guimares da Costa, JBarron, UBarros Teixeira, MGBarsov, SBartels, FBartoldus, RBarton, AEBartos, PBasalaev, ABasan, ABaselga, MBashta, IBassalat, ABasso, MJBasson, CRBates, RLBatlamous, SBatley, JRBatool, BBattaglia, MBauce, MBauer, PBayirli, ABeacham, JBBeau, TBeauchemin, PHBecherer, FBechtle, PBeck, HPBecker, KBecot, CBeddall, AJBednyakov, VABee, CPBeemster, LJBeermann, TABegalli, MBegel, MBehera, ABehr, JKBeirao Da Cruz E Silva, CBeirer, JFBeisiegel, FBelfkir, MBella, GBellagamba, LBellerive, ABellos, PBeloborodov, KBelotskiy, KBelyaev, NLBenchekroun, DBendebba, FBenhammou, YBenjamin, DPBenoit, MBensinger, JRBentvelsen, SBeresford, LBeretta, MBerge, DBergeaas Kuutmann, EBerger, NBergmann, BBeringer, JBerlendis, SBernardi, GBernius, CBernlochner, FUBerry, TBerta, PBerthold, ABertram, IABessidskaia Bylund, OBethke, SBetti, ABevan, AJBhamjee, MBhatta, SBhattacharya, DSBhattarai, PBhopatkar, VSBi, RBi, RBianchi, RMBiebel, OBielski, RBiesuz, NVBiglietti, MBilloud, TRVBindi, MBingul, ABini, CBiondi, SBiondini, ABirch-sykes, CJBird, GABirman, MBisanz, TBiswas, DBitadze, ABjrke, KBloch, IBlocker, CBlue, ABlumenschein, UBlumenthal, JBobbink, GJBobrovnikov, VSBoehler, MBogavac, DBogdanchikov, AGBohm, CBoisvert, VBokan, PBold, TBomben, MHuang, SParedes Hernandez, DKPeng, CTam, KCTu, Y
KeywordsBeyond Standard Model
Hadron-Hadron Scattering
Top Physics
Issue Date26-Jul-2023
PublisherSpringer
Citation
Journal of High Energy Physics, 2023, v. 2023, n. 7, p. 1-53 How to Cite?
Abstract

A search for a new heavy scalar or pseudo-scalar Higgs boson (H/A) produced in association with a pair of top quarks, with the Higgs boson decaying into a pair of top quarks (H/A → ��¯) is reported. The search targets a final state with exactly two leptons with same-sign electric charges or at least three leptons. The analysed dataset corresponds to an integrated luminosity of 139 fb1 of proton–proton collisions collected at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC. Two multivariate classifiers are used to separate the signal from the background. No significant excess of events over the Standard Model expectation is observed. The results are interpreted in the context of a type-II two-Higgs-doublet model. The observed (expected) upper limits at 95% confidence level on the ��¯�/� production cross-section times the branching ratio of H/A → ��¯ range between 14 (10) fb and 6 (5) fb for a heavy Higgs boson with mass between 400 GeV and 1000 GeV, respectively. Assuming that only one particle, either the scalar H or the pseudo-scalar A, contributes to the ��¯��¯ final state, values of tan β below 1.2 or 0.5 are excluded for a mass of 400 GeV or 1000 GeV, respectively. These exclusion ranges increase to tan β below 1.6 or 0.6 when both particles are considered.


Persistent Identifierhttp://hdl.handle.net/10722/339011
ISSN
2012 Impact Factor: 5.618
ISI Accession Number ID

 

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dc.contributor.authorAad, G-
dc.contributor.authorAbbott, B-
dc.contributor.authorAbbott, DC-
dc.contributor.authorAbeling, K-
dc.contributor.authorAbidi, SH-
dc.contributor.authorAboulhorma, A-
dc.contributor.authorAbramowicz, H-
dc.contributor.authorAbreu, H-
dc.contributor.authorAbulaiti, Y-
dc.contributor.authorAbusleme Hoffman, AC-
dc.contributor.authorAcharya, BS-
dc.contributor.authorAchkar, B-
dc.contributor.authorAdam, L-
dc.contributor.authorAdam Bourdarios, C-
dc.contributor.authorAdamczyk, L-
dc.contributor.authorAdamek, L-
dc.contributor.authorAddepalli, SV-
dc.contributor.authorAdelman, J-
dc.contributor.authorAdiguzel, A-
dc.contributor.authorAdorni, S-
dc.contributor.authorAdye, T-
dc.contributor.authorAffolder, AA-
dc.contributor.authorAfik, Y-
dc.contributor.authorAgaras, MN-
dc.contributor.authorAgarwala, J-
dc.contributor.authorAggarwal, A-
dc.contributor.authorAgheorghiesei, C-
dc.contributor.authorAguilar-Saavedra, JA-
dc.contributor.authorAhmad, A-
dc.contributor.authorAhmadov, F-
dc.contributor.authorAhmed, WS-
dc.contributor.authorAi, X-
dc.contributor.authorAielli, G-
dc.contributor.authorAizenberg, I-
dc.contributor.authorAkbiyik, M-
dc.contributor.authorÅkesson, TPA-
dc.contributor.authorAkimov, AV-
dc.contributor.authorAl Khoury, K-
dc.contributor.authorAlberghi, GL-
dc.contributor.authorAlbert, J-
dc.contributor.authorAlbicocco, P-
dc.contributor.authorAlconada Verzini, MJ-
dc.contributor.authorAlderweireldt, S-
dc.contributor.authorAleksa, M-
dc.contributor.authorAleksandrov, IN-
dc.contributor.authorAlexa, C-
dc.contributor.authorAlexopoulos, T-
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dc.contributor.authorAlfonsi, F-
dc.contributor.authorAlhroob, M-
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dc.contributor.authorAli, S-
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dc.contributor.authorAllbrooke, BMM-
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dc.contributor.authorAloisio, A-
dc.contributor.authorAlonso, F-
dc.contributor.authorAlpigiani, C-
dc.contributor.authorAlunno Camelia, E-
dc.contributor.authorAlvarez Estevez, M-
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dc.contributor.authorAmaral Coutinho, Y-
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dc.contributor.authorAmelung, C-
dc.contributor.authorAmes, CG-
dc.contributor.authorAmidei, D-
dc.contributor.authorAmor Dos Santos, SP-
dc.contributor.authorAmoroso, S-
dc.contributor.authorAmos, KR-
dc.contributor.authorAmrouche, CS-
dc.contributor.authorAnaniev, V-
dc.contributor.authorAnastopoulos, C-
dc.contributor.authorAndari, N-
dc.contributor.authorAndeen, T-
dc.contributor.authorAnders, JK-
dc.contributor.authorAndrean, SY-
dc.contributor.authorAndreazza, A-
dc.contributor.authorAngelidakis, S-
dc.contributor.authorAngerami, A-
dc.contributor.authorAnisenkov, AV-
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dc.contributor.authorAntel, C-
dc.contributor.authorAnthony, MT-
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dc.contributor.authorAntrim, DJA-
dc.contributor.authorAnulli, F-
dc.contributor.authorAoki, M-
dc.contributor.authorAparisi Pozo, JA-
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dc.contributor.authorAperio Bella, L-
dc.contributor.authorAppelt, C-
dc.contributor.authorAranzabal, N-
dc.contributor.authorAraujo Ferraz, V-
dc.contributor.authorArcangeletti, C-
dc.contributor.authorArce, ATH-
dc.contributor.authorArena, E-
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dc.contributor.authorArling, JH-
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dc.contributor.authorArnold, H-
dc.contributor.authorArrubarrena Tame, ZP-
dc.contributor.authorArtoni, G-
dc.contributor.authorAsada, H-
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dc.contributor.authorAsai, S-
dc.contributor.authorAsbah, NA-
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dc.contributor.authorAssamagan, K-
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dc.contributor.authorAtkin, RJ-
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dc.contributor.authorBaker, OK-
dc.contributor.authorBakker, PJ-
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dc.contributor.authorBakshi Gupta, D-
dc.contributor.authorBalaji, S-
dc.contributor.authorBalasubramanian, R-
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dc.contributor.authorBallabene, E-
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dc.contributor.authorBansal, S-
dc.contributor.authorBarak, L-
dc.contributor.authorBarberio, EL-
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dc.contributor.authorBarbero, M-
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dc.contributor.authorBarends, KN-
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dc.contributor.authorBarklow, T-
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dc.contributor.authorBarreiro Guimares da Costa, J-
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dc.contributor.authorBarsov, S-
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dc.contributor.authorBartoldus, R-
dc.contributor.authorBarton, AE-
dc.contributor.authorBartos, P-
dc.contributor.authorBasalaev, A-
dc.contributor.authorBasan, A-
dc.contributor.authorBaselga, M-
dc.contributor.authorBashta, I-
dc.contributor.authorBassalat, A-
dc.contributor.authorBasso, MJ-
dc.contributor.authorBasson, CR-
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, P-
dc.contributor.authorBayirli, A-
dc.contributor.authorBeacham, JB-
dc.contributor.authorBeau, T-
dc.contributor.authorBeauchemin, PH-
dc.contributor.authorBecherer, F-
dc.contributor.authorBechtle, P-
dc.contributor.authorBeck, HP-
dc.contributor.authorBecker, K-
dc.contributor.authorBecot, C-
dc.contributor.authorBeddall, AJ-
dc.contributor.authorBednyakov, VA-
dc.contributor.authorBee, CP-
dc.contributor.authorBeemster, LJ-
dc.contributor.authorBeermann, TA-
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dc.contributor.authorBehr, JK-
dc.contributor.authorBeirao Da Cruz E Silva, C-
dc.contributor.authorBeirer, JF-
dc.contributor.authorBeisiegel, F-
dc.contributor.authorBelfkir, M-
dc.contributor.authorBella, G-
dc.contributor.authorBellagamba, L-
dc.contributor.authorBellerive, A-
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dc.contributor.authorBenhammou, Y-
dc.contributor.authorBenjamin, DP-
dc.contributor.authorBenoit, M-
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dc.contributor.authorBeresford, L-
dc.contributor.authorBeretta, M-
dc.contributor.authorBerge, D-
dc.contributor.authorBergeaas Kuutmann, E-
dc.contributor.authorBerger, N-
dc.contributor.authorBergmann, B-
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.authorBerthold, A-
dc.contributor.authorBertram, IA-
dc.contributor.authorBessidskaia Bylund, O-
dc.contributor.authorBethke, S-
dc.contributor.authorBetti, A-
dc.contributor.authorBevan, AJ-
dc.contributor.authorBhamjee, M-
dc.contributor.authorBhatta, S-
dc.contributor.authorBhattacharya, DS-
dc.contributor.authorBhattarai, P-
dc.contributor.authorBhopatkar, VS-
dc.contributor.authorBi, R-
dc.contributor.authorBi, R-
dc.contributor.authorBianchi, RM-
dc.contributor.authorBiebel, O-
dc.contributor.authorBielski, R-
dc.contributor.authorBiesuz, NV-
dc.contributor.authorBiglietti, M-
dc.contributor.authorBilloud, TRV-
dc.contributor.authorBindi, M-
dc.contributor.authorBingul, A-
dc.contributor.authorBini, C-
dc.contributor.authorBiondi, S-
dc.contributor.authorBiondini, A-
dc.contributor.authorBirch-sykes, CJ-
dc.contributor.authorBird, GA-
dc.contributor.authorBirman, M-
dc.contributor.authorBisanz, T-
dc.contributor.authorBiswas, D-
dc.contributor.authorBitadze, A-
dc.contributor.authorBjrke, K-
dc.contributor.authorBloch, I-
dc.contributor.authorBlocker, C-
dc.contributor.authorBlue, A-
dc.contributor.authorBlumenschein, U-
dc.contributor.authorBlumenthal, J-
dc.contributor.authorBobbink, GJ-
dc.contributor.authorBobrovnikov, VS-
dc.contributor.authorBoehler, M-
dc.contributor.authorBogavac, D-
dc.contributor.authorBogdanchikov, AG-
dc.contributor.authorBohm, C-
dc.contributor.authorBoisvert, V-
dc.contributor.authorBokan, P-
dc.contributor.authorBold, T-
dc.contributor.authorBomben, M-
dc.contributor.authorHuang, S-
dc.contributor.authorParedes Hernandez, DK-
dc.contributor.authorPeng, C-
dc.contributor.authorTam, KC-
dc.contributor.authorTu, Y-
dc.date.accessioned2024-03-11T10:33:10Z-
dc.date.available2024-03-11T10:33:10Z-
dc.date.issued2023-07-26-
dc.identifier.citationJournal of High Energy Physics, 2023, v. 2023, n. 7, p. 1-53-
dc.identifier.issn1126-6708-
dc.identifier.urihttp://hdl.handle.net/10722/339011-
dc.description.abstract<p>A search for a new heavy scalar or pseudo-scalar Higgs boson (<em>H/A</em>) produced in association with a pair of top quarks, with the Higgs boson decaying into a pair of top quarks (<em>H/A</em> → ��¯) is reported. The search targets a final state with exactly two leptons with same-sign electric charges or at least three leptons. The analysed dataset corresponds to an integrated luminosity of 139 fb<sup><em>−</em>1</sup> of proton–proton collisions collected at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC. Two multivariate classifiers are used to separate the signal from the background. No significant excess of events over the Standard Model expectation is observed. The results are interpreted in the context of a type-II two-Higgs-doublet model. The observed (expected) upper limits at 95% confidence level on the ��¯�/� production cross-section times the branching ratio of <em>H/A</em> → ��¯ range between 14 (10) fb and 6 (5) fb for a heavy Higgs boson with mass between 400 GeV and 1000 GeV, respectively. Assuming that only one particle, either the scalar <em>H</em> or the pseudo-scalar <em>A</em>, contributes to the ��¯��¯ final state, values of tan <em>β</em> below 1.2 or 0.5 are excluded for a mass of 400 GeV or 1000 GeV, respectively. These exclusion ranges increase to tan <em>β</em> below 1.6 or 0.6 when both particles are considered.</p>-
dc.languageeng-
dc.publisherSpringer-
dc.relation.ispartofJournal of High Energy Physics-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectBeyond Standard Model-
dc.subjectHadron-Hadron Scattering-
dc.subjectTop Physics-
dc.titleSearch for t(t)over-barH/A → t(t)over-bart(t)over-bar production in the multilepton final state in proton-proton collisions at √s=13 TeV with the ATLAS detector-
dc.typeArticle-
dc.identifier.doi10.1007/JHEP07(2023)203-
dc.identifier.scopuseid_2-s2.0-85167601349-
dc.identifier.volume2023-
dc.identifier.issue7-
dc.identifier.spage1-
dc.identifier.epage53-
dc.identifier.eissn1029-8479-
dc.identifier.isiWOS:001062358200001-
dc.identifier.issnl1029-8479-

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