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Measurement of the semileptonic t t ¯ + γ production cross section in pp collisions at √s=8 TeV

ArticleAçık Erişim

Özet

A measurement of the cross section for top quark-antiquark (t t ¯) pairs produced in association with a photon in proton-proton collisions at s=8 TeV is presented. The analysis uses data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.7 fb1. The signal is defined as the production of a t t ¯ pair in association with a photon having a transverse energy larger than 25 GeV and an absolute pseudorapidity smaller than 1.44. The measurement is performed in the fiducial phase space corresponding to the semileptonic decay chain of the t t ¯ pair, and the cross section is measured relative to the inclusive t t ¯ pair production cross section. The fiducial cross section for associated t t ¯ pair and photon production is found to be 127 ±27 (stat+syst) fb per semileptonic final state. The measured value is in agreement with the theoretical prediction.[Figure not available: see fulltext.]. © 2017, The Author(s).

Anahtar Kelimeler

Hadron-Hadron scattering (experiments)Top physics
RDL Kalıcı Bağlantı (PID)
https://rdlopen.rawdatalibrary.net/r/ebyu/14993Resmi atıflarda kullanılan kalıcı adres
DOI
https://doi.org/10.1007/jhep10(2017)006Yayıncı resmi DOI adresi
Tam Kayıt
AlanDeğerDil
dc.contributor.authorSirunyan, A.M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAsilar, E.
dc.contributor.authorBergauer, T.
dc.contributor.authorBrandstetter, J.
dc.contributor.authorBrondolin, E.
dc.contributor.authorDragicevic, M.
dc.contributor.authorErö, J.
dc.contributor.authorFlechl, M.
dc.contributor.authorFriedl, M.
dc.contributor.authorFrühwirth, R.
dc.contributor.authorGhete, V.M.
dc.contributor.authorHartl, C.
dc.contributor.authorHörmann, N.
dc.contributor.authorHrubec, J.
dc.contributor.authorJeitler, M.
dc.contributor.authorKönig, A.
dc.contributor.authorKrätschmer, I.
dc.contributor.authorLiko, D.
dc.contributor.authorMatsushita, T.
dc.contributor.authorMikulec, I.
dc.contributor.authorRabady, D.
dc.contributor.authorRad, N.
dc.contributor.authorRahbaran, B.
dc.contributor.authorRohringer, H.
dc.contributor.authorSchieck, J.
dc.contributor.authorStrauss, J.
dc.contributor.authorWaltenberger, W.
dc.contributor.authorWulz, C.-E.
dc.contributor.authorDvornikov, O.
dc.contributor.authorMakarenko, V.
dc.contributor.authorMossolov, V.
dc.contributor.authorGonzalez, J. Suarez
dc.contributor.authorZykunov, V.
dc.contributor.authorShumeiko, N.
dc.contributor.authorAlderweireldt, S.
dc.contributor.authorDe Wolf, E.A.
dc.contributor.authorJanssen, X.
dc.contributor.authorLauwers, J.
dc.contributor.authorVan De Klundert, M.
dc.contributor.authorVan Haevermaet, H.
dc.contributor.authorVan Mechelen, P.
dc.contributor.authorVan Remortel, N.
dc.contributor.authorVan Spilbeeck, A.
dc.contributor.authorZeid, S. Abu
dc.contributor.authorBlekman, F.
dc.contributor.authorD’Hondt, J.
dc.contributor.authorDaci, N.
dc.contributor.authorDe Bruyn, I.
dc.date.accessioned2026-10-18T20:29:47.401822865Z
dc.date.available2026-10-18T20:29:47.401822865Z
dc.date.issued2017
dc.description.abstractA measurement of the cross section for top quark-antiquark (t t ¯) pairs produced in association with a photon in proton-proton collisions at s=8 TeV is presented. The analysis uses data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.7 fb1. The signal is defined as the production of a t t ¯ pair in association with a photon having a transverse energy larger than 25 GeV and an absolute pseudorapidity smaller than 1.44. The measurement is performed in the fiducial phase space corresponding to the semileptonic decay chain of the t t ¯ pair, and the cross section is measured relative to the inclusive t t ¯ pair production cross section. The fiducial cross section for associated t t ¯ pair and photon production is found to be 127 ±27 (stat+syst) fb per semileptonic final state. The measured value is in agreement with the theoretical prediction.[Figure not available: see fulltext.]. © 2017, The Author(s).
dc.description.sponsorshipFunding text 1: We 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 centres 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: BMWFW and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COL-CIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR and RAEP (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI and FEDER (Spain); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (U.S.A.).; Funding text 2: Open Access, Copyright CERN, for the benefit of the CMS Collaboration. Article funded by SCOAP3.; Funding text 3: Individuals have received support from the Marie-Curie programme and the European Research Council and Horizon 2020 Grant, contract No. 675440 (European Union); the
dc.identifier.doi10.1007/jhep10(2017)006
dc.identifier.issn1126-6708
dc.identifier.issue10
dc.identifier.scopus2-s2.0-85030844180
dc.identifier.startpage6
dc.identifier.urihttps://rdlopen.rawdatalibrary.net/r/ebyu/14993
dc.identifier.volume2017
dc.language.isoen
dc.publisherSpringer Verlag
dc.relation.ispartofJournal of High Energy Physics
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectHadron-Hadron scattering (experiments)
dc.subjectTop physics
dc.titleMeasurement of the semileptonic t t ¯ + γ production cross section in pp collisions at √s=8 TeV
dc.typeArticle
dspace.entity.typePublication
rdl.citation.scopus37
rdl.oa.statusgold
rdl.source.indexSCOPUS