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Simultaneous Probe of the Charm and Bottom Quark Yukawa Couplings Using ttH Events

ArticleAçık Erişim

Özet

A search for the standard model Higgs boson decaying to a charm quark-antiquark pair, (Formula presented), produced in association with a top quark-antiquark pair ((Formula presented)) is presented. The search is performed with data from proton-proton collisions at (Formula presented), corresponding to an integrated luminosity of (Formula presented). Advanced machine learning techniques are employed for jet flavor identification and event classification. The Higgs boson decay to a bottom quark-antiquark pair is measured simultaneously and the observed (Formula presented) event rate relative to the standard model expectation is (Formula presented). The observed (expected) upper limit on the product of production cross section and branching fraction (Formula presented) is 0.11 (0.13) pb at 95% confidence level, corresponding to 7.8 (8.7) times the standard model prediction. When combined with the previous search for (Formula presented) via associated production with a (Formula presented) or (Formula presented) boson, the observed (expected) 95% confidence interval on the Higgs-charm Yukawa coupling modifier, (Formula presented), is (Formula presented) (2.7), the most stringent constraint to date. © 2026 CERN, for the CMS Collaboration.

Anahtar Kelimeler

CouplingsFighter aircraftLearning systemsBottom quarksCharm quarksIntegrated luminosityMachine learning techniquesProton proton collisionsQuark antiquark pairStandard-model Higgs bosonsThe standard modelTop quarksYukawa couplingsarticlehumanquarkBosons
RDL Kalıcı Bağlantı (PID)
https://rdlopen.rawdatalibrary.net/r/ebyu/10124Resmi atıflarda kullanılan kalıcı adres
DOI
https://doi.org/10.1103/9nwb-splkYayıncı resmi DOI adresi
Tam Kayıt
AlanDeğerDil
dc.contributor.authorHayrapetyan, A.
dc.contributor.authorMakarenko, V.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAndrejkovic, J.W.
dc.contributor.authorBenato, L.
dc.contributor.authorBergauer, T.
dc.contributor.authorDragicevic, M.
dc.contributor.authorGiordano, C.
dc.contributor.authorHussain, P.S.
dc.contributor.authorJeitler, M.
dc.contributor.authorKrammer, N.
dc.contributor.authorLi, A.
dc.contributor.authorLiko, D.
dc.contributor.authorMatthewman, M.
dc.contributor.authorMikulec, I.
dc.contributor.authorSchieck, J.
dc.contributor.authorSchöfbeck, R.
dc.contributor.authorSchwarz, D.
dc.contributor.authorShooshtari, M.
dc.contributor.authorSonawane, M.
dc.contributor.authorWaltenberger, W.
dc.contributor.authorWulz, C.-E.
dc.contributor.authorJanssen, T.
dc.contributor.authorKwon, H.
dc.contributor.authorOcampo Henao, D.
dc.contributor.authorVan Laer, T.
dc.contributor.authorVan Mechelen, P.
dc.contributor.authorBierkens, J.
dc.contributor.authorBreugelmans, N.
dc.contributor.authorD’Hondt, J.
dc.contributor.authorDansana, S.
dc.contributor.authorDe Moor, A.
dc.contributor.authorDelcourt, M.
dc.contributor.authorHeyen, F.
dc.contributor.authorHong, Y.
dc.contributor.authorKashko, P.
dc.contributor.authorLowette, S.
dc.contributor.authorMakarenko, I.
dc.contributor.authorMüller, D.
dc.contributor.authorSong, J.
dc.contributor.authorTavernier, S.
dc.contributor.authorTytgat, M.
dc.contributor.authorVan Onsem, G.P.
dc.contributor.authorVan Putte, S.
dc.contributor.authorVannerom, D.
dc.contributor.authorBilin, B.
dc.contributor.authorClerbaux, B.
dc.contributor.authorDas, A.K.
dc.contributor.authorDe Bruyn, I.
dc.date.accessioned2026-10-18T20:25:22.742563813Z
dc.date.available2026-10-18T20:25:22.742563813Z
dc.date.issued2026
dc.description.abstractA search for the standard model Higgs boson decaying to a charm quark-antiquark pair, (Formula presented), produced in association with a top quark-antiquark pair ((Formula presented)) is presented. The search is performed with data from proton-proton collisions at (Formula presented), corresponding to an integrated luminosity of (Formula presented). Advanced machine learning techniques are employed for jet flavor identification and event classification. The Higgs boson decay to a bottom quark-antiquark pair is measured simultaneously and the observed (Formula presented) event rate relative to the standard model expectation is (Formula presented). The observed (expected) upper limit on the product of production cross section and branching fraction (Formula presented) is 0.11 (0.13) pb at 95% confidence level, corresponding to 7.8 (8.7) times the standard model prediction. When combined with the previous search for (Formula presented) via associated production with a (Formula presented) or (Formula presented) boson, the observed (expected) 95% confidence interval on the Higgs-charm Yukawa coupling modifier, (Formula presented), is (Formula presented) (2.7), the most stringent constraint to date. © 2026 CERN, for the CMS Collaboration.
dc.identifier.doi10.1103/9nwb-splk
dc.identifier.issn0031-9007
dc.identifier.issue1
dc.identifier.pmid41586649
dc.identifier.scopus2-s2.0-105027456400
dc.identifier.startpage011801
dc.identifier.urihttps://rdlopen.rawdatalibrary.net/r/ebyu/10124
dc.identifier.volume136
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.ispartofPhysical Review Letters
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectCouplings
dc.subjectFighter aircraft
dc.subjectLearning systems
dc.subjectBottom quarks
dc.subjectCharm quarks
dc.subjectIntegrated luminosity
dc.subjectMachine learning techniques
dc.subjectProton proton collisions
dc.subjectQuark antiquark pair
dc.subjectStandard-model Higgs bosons
dc.subjectThe standard model
dc.subjectTop quarks
dc.subjectYukawa couplings
dc.subjectarticle
dc.subjecthuman
dc.subjectquark
dc.subjectBosons
dc.titleSimultaneous Probe of the Charm and Bottom Quark Yukawa Couplings Using ttH Events
dc.typeArticle
dspace.entity.typePublication
rdl.citation.scopus7
rdl.oa.statusgold
rdl.source.indexSCOPUS