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Measurement of the jet mass distribution and top quark mass in hadronic decays of boosted top quarks in pp collisions at √s = 13 TeV

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A measurement is reported of the jet mass distribution in hadronic decays of boosted top quarks produced in pp collisions at √s = 13 TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 35.9 fb−1. The measurement is performed in the lepton þ jets channel of tt events, where the lepton is an electron or muon. The products of the hadronic top quark decay t → bW → bqq¯0 are reconstructed as a single jet with transverse momentum larger than 400 GeV. The t¯t cross section as a function of the jet mass is unfolded at the particle level and used to extract a value of the top quark mass of 172.6 ± 2.5 GeV. A novel jet reconstruction technique is used for the first time at the LHC, which improves the precision by a factor of 3 relative to an earlier measurement. This highlights the potential of measurements using boosted top quarks, where the new technique will enable future precision measurements. © 2020 CERN, for the CMS Collaboration

Anahtar Kelimeler

CMS detectorsHadronic decaysHadronicsIntegrated luminosityMass distributionMeasurements ofQuark massSingle jetTop quarksTransverse momentaarticleleptonluminancequark
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AlanDeğerDil
dc.contributor.authorSirunyan, A.M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAmbrogi, F.
dc.contributor.authorBergauer, T.
dc.contributor.authorBrandstetter, J.
dc.contributor.authorDragicevic, M.
dc.contributor.authorErö, J.
dc.contributor.authorEscalante Del Valle, A.
dc.contributor.authorFlechl, M.
dc.contributor.authorFrühwirth, R.
dc.contributor.authorJeitler, M.
dc.contributor.authorKrammer, N.
dc.contributor.authorKrätschmer, I.
dc.contributor.authorLiko, D.
dc.contributor.authorMadlener, T.
dc.contributor.authorMikulec, I.
dc.contributor.authorRad, N.
dc.contributor.authorSchieck, J.
dc.contributor.authorSchöfbeck, R.
dc.contributor.authorSpanring, M.
dc.contributor.authorSpitzbart, D.
dc.contributor.authorWaltenberger, W.
dc.contributor.authorWulz, C.-E.
dc.contributor.authorZarucki, M.
dc.contributor.authorDrugakov, V.
dc.contributor.authorMossolov, V.
dc.contributor.authorSuarez Gonzalez, J.
dc.contributor.authorDarwish, M.R.
dc.contributor.authorde Wolf, E.A.
dc.contributor.authorDi Croce, D.
dc.contributor.authorJanssen, X.
dc.contributor.authorLelek, A.
dc.contributor.authorPieters, M.
dc.contributor.authorRejeb Sfar, H.
dc.contributor.authorvan Haevermaet, H.
dc.contributor.authorvan Mechelen, P.
dc.contributor.authorvan Putte, S.
dc.contributor.authorvan Remortel, N.
dc.contributor.authorBlekman, F.
dc.contributor.authorBols, E.S.
dc.contributor.authorChhibra, S.S.
dc.contributor.authorD'Hondt, J.
dc.contributor.authorde Clercq, J.
dc.contributor.authorLontkovskyi, D.
dc.contributor.authorLowette, S.
dc.contributor.authorMarchesini, I.
dc.contributor.authorMoortgat, S.
dc.contributor.authorPython, Q.
dc.contributor.authorSkovpen, K.
dc.date.accessioned2026-10-18T20:28:25.614923677Z
dc.date.available2026-10-18T20:28:25.614923677Z
dc.date.issued2020
dc.description.abstractA measurement is reported of the jet mass distribution in hadronic decays of boosted top quarks produced in pp collisions at √s = 13 TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 35.9 fb−1. The measurement is performed in the lepton þ jets channel of tt events, where the lepton is an electron or muon. The products of the hadronic top quark decay t → bW → bqq¯0 are reconstructed as a single jet with transverse momentum larger than 400 GeV. The t¯t cross section as a function of the jet mass is unfolded at the particle level and used to extract a value of the top quark mass of 172.6 ± 2.5 GeV. A novel jet reconstruction technique is used for the first time at the LHC, which improves the precision by a factor of 3 relative to an earlier measurement. This highlights the potential of measurements using boosted top quarks, where the new technique will enable future precision measurements. © 2020 CERN, for the CMS Collaboration
dc.description.sponsorshipWe congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, PUT, and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); NKFIA (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR, and NRC KI (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI, and FEDER (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA).
dc.identifier.doi10.1103/physrevlett.124.202001
dc.identifier.issn0031-9007
dc.identifier.issue20
dc.identifier.pmid32501048
dc.identifier.scopus2-s2.0-85086052956
dc.identifier.startpage202001
dc.identifier.urihttps://rdlopen.rawdatalibrary.net/r/ebyu/13593
dc.identifier.volume124
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.ispartofPhysical Review Letters
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectCMS detectors
dc.subjectHadronic decays
dc.subjectHadronics
dc.subjectIntegrated luminosity
dc.subjectMass distribution
dc.subjectMeasurements of
dc.subjectQuark mass
dc.subjectSingle jet
dc.subjectTop quarks
dc.subjectTransverse momenta
dc.subjectarticle
dc.subjectlepton
dc.subjectluminance
dc.subjectquark
dc.titleMeasurement of the jet mass distribution and top quark mass in hadronic decays of boosted top quarks in pp collisions at √s = 13 TeV
dc.typeArticle
dspace.entity.typePublication
rdl.citation.scopus43
rdl.oa.statusgold
rdl.source.indexSCOPUS