Journal article
Measurement of the ratio B(t→Wb)/B(t→Wq) in pp collisions at s=8 TeV
Physics letters. B, Vol.736, pp.33-57
09/01/2014
DOI: 10.1016/j.physletb.2014.06.076
Abstract
The ratio of the top-quark branching fractions R=B(t→Wb)/B(t→Wq), where the denominator includes the sum over all down-type quarks (q = b, s, d), is measured in the tt- dilepton final state with proton-proton collision data at s=8 TeV from an integrated luminosity of 19.7 fb-1, collected with the CMS detector. In order to quantify the purity of the signal sample, the cross section is measured by fitting the observed jet multiplicity, thereby constraining the signal and background contributions. By counting the number of b jets per event, an unconstrained value of R=1.014±0.003(stat.)±0.032(syst.) is measured, in a good agreement with current precision measurements in electroweak and flavour sectors. A lower limit R>0.955 at the 95% confidence level is obtained after requiring R≤1, and a lower limit on the Cabibbo-Kobayashi-Maskawa matrix element
Details
- Title: Subtitle
- Measurement of the ratio B(t→Wb)/B(t→Wq) in pp collisions at s=8 TeV
- Creators
- Vardan Khachatryan - Yerevan Physics InstituteCécile Caillol - Université Libre de BruxellesBarbara Clerbaux - Université Libre de BruxellesGilles LentdeckerLaurent Favart - Université Libre de BruxellesArnaud GayAnastasia Grebenyuk - Université Libre de BruxellesAlexandre Leonard - Université Libre de BruxellesPierre Marage - Université Libre de BruxellesAbdollah Mohammadi - Université Libre de BruxellesLuca Pernie - Université Libre de BruxellesThomas Reis - Université Libre de BruxellesTomislav Seva - Université Libre de BruxellesLaurent Thomas - Université Libre de BruxellesCatherine Vander VeldePascal Vanlaer - Université Libre de BruxellesJian WangCMS Collaboration
- Contributors
- Y Onel (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Physics letters. B, Vol.736, pp.33-57
- DOI
- 10.1016/j.physletb.2014.06.076
- ISSN
- 0370-2693
- eISSN
- 1873-2445
- Publisher
- Elsevier B.V
- Grant note
- DOI: 10.13039/501100003413, name: BMWFW; DOI: 10.13039/501100002428, name: FWF; DOI: 10.13039/501100002661, name: Fonds De La Recherche Scientifique - FNRS; DOI: 10.13039/501100003130, name: FWO; DOI: 10.13039/501100003593, name: CNPq; DOI: 10.13039/501100002322, name: CAPES; name: FAPERJ; DOI: 10.13039/501100001807, name: FAPESP; name: MES; name: CERN; DOI: 10.13039/501100002367, name: CAS; DOI: 10.13039/501100002855, name: MOST; DOI: 10.13039/501100001809, name: NSFC; name: COLCIENCIAS; name: MSES; name: CSF; DOI: 10.13039/501100001810, name: RPF; name: MoER; name: SF0690030s09; name: ERDF; DOI: 10.13039/501100002341, name: Academy of Finland; name: MEC; name: HIP; name: CEA; name: CNRS/IN2P3; DOI: 10.13039/501100002347, name: BMBF; DOI: 10.13039/501100001659, name: DFG; name: HGF; DOI: 10.13039/501100003448, name: GSRT; DOI: 10.13039/501100003549, name: OTKA; name: NIH; DOI: 10.13039/501100001502, name: DAE; DOI: 10.13039/501100001409, name: DST; name: IPM; DOI: 10.13039/501100001602, name: SFI; DOI: 10.13039/501100004007, name: INFN; DOI: 10.13039/501100003725, name: NRF; name: WCU; name: LAS; name: MOE; DOI: 10.13039/501100004386, name: UM; name: CINVESTAV; DOI: 10.13039/501100003141, name: CONACYT; name: SEP; name: UASLP-FAI; DOI: 10.13039/501100003524, name: MBIE; name: PAEC; name: MSHE; name: NSC; DOI: 10.13039/501100001871, name: FCT; DOI: 10.13039/501100003822, name: JINR; name: MON; name: RosAtom; DOI: 10.13039/501100002674, name: RAS; DOI: 10.13039/501100002261, name: RFBR; name: MESTD; name: SEIDI; name: CPAN; name: Swiss Funding Agencies; name: MST; name: ThEPCenter; name: IPST; name: STAR; DOI: 10.13039/501100004192, name: NSTDA; name: TUBITAK; name: TAEK; name: NASU; name: SFFR; DOI: 10.13039/501100000271, name: STFC; DOI: 10.13039/100000015, name: DOE; DOI: 10.13039/100000001, name: NSF; name: Marie-Curie programme; DOI: 10.13039/501100000781, name: European Research Council; name: EPLANET; DOI: 10.13039/501100004117, name: Leventis Foundation; DOI: 10.13039/100000879, name: Alfred P. Sloan Foundation; name: Alexander von Humboldt Foundation; name: Belgian Federal Science Policy Office; DOI: 10.13039/501100003134, name: Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture; DOI: 10.13039/501100003132, name: Agentschap voor Innovatie door Wetenschap en Technologie; DOI: 10.13039/501100001823, name: Ministry of Education, Youth and Sports; name: Council of Science and Industrial Research; name: Compagnia di San Paolo; DOI: 10.13039/501100001870, name: Foundation For Polish Science; name: Regional Development Fund; name: EU–ESF; name: NSRF
- Language
- English
- Date published
- 09/01/2014
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199855102771
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