Inclusive and differential measurements of the tt charge asymmetry in pp collisions at √s=8 TeV

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dc.contributor.author Khachatryan, V.
dc.contributor.author Albajar, C.
dc.contributor.author Missiroli, M.
dc.contributor.author Morán, D.
dc.contributor.author CMS Collaboration
dc.contributor.author de Trocóniz, J. F.
dc.contributor.other UAM. Departamento de Física Teórica es_ES
dc.date.accessioned 2017-08-04T08:48:44Z
dc.date.available 2017-08-04T08:48:44Z
dc.date.issued 2016-03-29
dc.identifier.citation Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 757 (2016): 154-179 en_US
dc.identifier.issn 0370-2693 (print) es_ES
dc.identifier.issn 1873-2445 (online) es_ES
dc.identifier.uri http://hdl.handle.net/10486/679237
dc.description.abstract The tt- charge asymmetry is measured in proton-proton collisions at a centre-of-mass energy of 8 TeV. The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7 fb-1. Selected events contain an electron or a muon and four or more jets, where at least one jet is identified as originating from b-quark hadronization. The inclusive charge asymmetry is found to be 0.0010±0.0068 (stat)±0.0037 (syst). In addition, differential charge asymmetries as a function of rapidity, transverse momentum, and invariant mass of the tt- system are studied. For the first time at the LHC, the measurements are also performed in a reduced fiducial phase space of top quark pair production, with an integrated result of -0.0035±0.0072 (stat)±0.0031 (syst). All measurements are consistent within two standard deviations with zero asymmetry as well as with the predictions of the standard model en_US
dc.description.sponsorship 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); FNRSand FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); 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); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS and RFBR (Russia); MESTD (Serbia); SEIDI and CPAN (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 (USA). Individuals have received support from the Marie-Curie programme and the European Research Council and EPLANET (European Union); the Leventis Foundation; the A.P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Fed-eral Science Policy Office; the Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture(FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Council of Science and Industrial Research, India; the HOMING PLUS programme of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund; the Compagnia di San Paolo (Torino); the Consorzio per la Fisica (Trieste); MIUR project 20108T4XTM (Italy); the Thalis and Aristeia programmes cofinanced by EU-ESF and the Greek NSRF; the National Priorities Research Program by Qatar National Re-search Fund; the Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University (Thailand); and the Welch Foundation en_US
dc.format.extent 26 pag. es_ES
dc.format.mimetype application/pdf en
dc.language.iso eng en
dc.publisher Elsevier B.V en_US
dc.relation.ispartof Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics en_US
dc.rights © 2016 CERN for the benefit of the CMS Collaboration en_US
dc.subject.other Charge asymmetry en_US
dc.subject.other CMS en_US
dc.subject.other Physics en_US
dc.subject.other Top quark en_US
dc.title Inclusive and differential measurements of the tt charge asymmetry in pp collisions at √s=8 TeV en_US
dc.type article en
dc.subject.eciencia Física es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.physletb.2016.03.060 es_ES
dc.identifier.doi 10.1016/j.physletb.2016.03.060 es_ES
dc.identifier.publicationfirstpage 154 es_ES
dc.identifier.publicationlastpage 179 es_ES
dc.identifier.publicationvolume 757 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/246806 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion en
dc.rights.cc Reconocimiento es_ES
dc.rights.accessRights openAccess en
dc.authorUAM Fernández Troconiz Acha, Jorge (260192)


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