Journal article
Determination of the top-quark pole mass and strong coupling constant from the tt¯ production cross section in pp collisions at s=7 TeV
Physics letters. B, Vol.728, pp.496-517
2014
DOI: 10.1016/j.physletb.2013.12.009
Abstract
The inclusive cross section for top-quark pair production measured by the CMS experiment in proton–proton collisions at a center-of-mass energy of 7 TeV is compared to the QCD prediction at next-to-next-to-leading order with various parton distribution functions to determine the top-quark pole mass, mt pole, or the strong coupling constant, αS. With the parton distribution function set NNPDF2.3, a pole mass of 176.7−3.4 +3.8 GeV is obtained when constraining αS at the scale of the Z boson mass, mZ, to the current world average. Alternatively, by constraining mt pole to the latest average from direct mass measurements, a value of αS(mZ)=0.1151−0.0032 +0.0033 is extracted. This is the first determination of αS using events from top-quark production
Details
- Title: Subtitle
- Determination of the top-quark pole mass and strong coupling constant from the tt¯ production cross section in pp collisions at s=7 TeV
- Creators
- CMS CollaborationS Chatrchyan (Contributor) - Yerevan State UniversityV Khachatryan (Contributor) - A. Alikhanyan National LaboratoryA. M Sirunyan (Contributor) - A. Alikhanyan National LaboratoryA. Tumasyan (Contributor) - A. Alikhanyan National LaboratoryW. Adam (Contributor) - Austrian Academy of SciencesT Bergauer (Contributor) - Austrian Academy of SciencesM Dragicevic (Contributor) - Austrian Academy of SciencesJ Erö (Contributor) - Austrian Academy of SciencesY Onel (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Physics letters. B, Vol.728, pp.496-517
- DOI
- 10.1016/j.physletb.2013.12.009
- ISSN
- 0370-2693
- eISSN
- 1873-2445
- Publisher
- Elsevier B.V
- Grant note
- name: BMWF; name: FWF; name: FNRS; name: FWO; name: CNPq; name: CAPES; name: FAPERJ; name: FAPESP; name: MES; name: CERN; name: CAS; name: MoST; name: NSFC; name: COLCIENCIAS; name: MSES; name: RPF; name: MoER; name: SF0690030s09; name: ERDF; name: Academy of Finland; name: MEC; name: HIP; name: CEA; name: CNRS/IN2P3; name: BMBF; name: DFG; name: HGF; name: GSRT; name: OTKA; name: NKTH; name: DAE; name: DST; name: IPM; name: SFI; name: INFN; name: NRF; name: WCU; name: LAS; name: CINVESTAV; name: CONACYT; name: SEP; name: UASLP-FAI; name: MSI; name: PAEC; name: MSHE; name: NSC; name: FCT; name: JINR; name: MON; name: RosAtom; name: RAS; name: RFBR; name: MESTD; name: SEIDI; name: CPAN; name: Swiss Funding Agencies; name: NSC; name: ThEPCenter; name: IPST; name: STAR; name: NSTDA; name: TUBITAK; name: TAEK; name: NASU; name: STFC; name: DOE; name: NSF
- Language
- English
- Date published
- 2014
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199849002771
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