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Measurement of BB¯¯¯¯ angular correlations based on secondary vertex reconstruction at s√=7TeV

dc.contributor.authorKhachatryan, V.
dc.contributor.authorBrochero Cifuentes, Javier Andrés 
dc.contributor.authorCabrillo Bartolomé, José Iban 
dc.contributor.authorCalderón Tazón, Alicia 
dc.contributor.authorChamizo Llatas, María
dc.contributor.authorChuang, S. H.
dc.contributor.authorDuarte Campderros, Jorge 
dc.contributor.authorFelcini, Marta
dc.contributor.authorFernández García, Marcos 
dc.contributor.authorGómez Gramuglio, Gervasio 
dc.contributor.authorGonzález Sánchez, Francisco Javier 
dc.contributor.authorJordá Lope, Clara
dc.contributor.authorLobelle Pardo, Patricia
dc.contributor.authorLópez Virto, María Amparo
dc.contributor.authorMarco de Lucas, Jesús 
dc.contributor.authorMarco de Lucas, Rafael José
dc.contributor.authorMartínez Rivero, Celso
dc.contributor.authorMatorras Weinig, Francisco 
dc.contributor.authorMuñoz Sánchez, Francisca Javiela
dc.contributor.authorPiedra Gómez, Jonatan 
dc.contributor.authorRodrigo Anoro, Teresa 
dc.contributor.authorRuiz Jimeno, Alberto 
dc.contributor.authorScodellaro, Luca 
dc.contributor.authorSobrón Sañudo, Mar
dc.contributor.authorVila Álvarez, Iván  
dc.contributor.authorVilar Cortabitarte, Rocío 
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2023-03-29T07:57:37Z
dc.date.available2023-03-29T07:57:37Z
dc.date.issued2011-03
dc.identifier.issn1126-6708
dc.identifier.issn1029-8479
dc.identifier.urihttps://hdl.handle.net/10902/28406
dc.description.abstractA measurement of the angular correlations between beauty and anti-beauty hadrons (BB¯¯¯¯) produced in pp collisions at a centre-of-mass energy of 7 TeV at the CERN LHC is presented, probing for the first time the region of small angular separation. The B hadrons are identified by the presence of displaced secondary vertices from their decays. The B hadron angular separation is reconstructed from the decay vertices and the primary-interaction vertex. The differential BB¯¯¯¯ production cross section, measured from a data sample collected by CMS and corresponding to an integrated luminosity of 3.1 pb−1, shows that a sizable fraction of the BB¯¯¯¯ pairs are produced with small opening angles. These studies provide a test of QCD and further insight into the dynamics of bb¯¯¯ production.es_ES
dc.description.sponsorshipWe wish to congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes, and acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland,ME, andHIP (Finland); CEAand CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA).es_ES
dc.format.extent35 p.es_ES
dc.language.isoenges_ES
dc.publisherSpringer Verlages_ES
dc.rightsAttribution-NonCommercial 4.0 International. ©CERN, for the benefit of the CMS collaborationes_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.sourceJournal of High Energy Physics, 2011, 2011(3), 136es_ES
dc.subject.otherHadron-hadron scatteringes_ES
dc.titleMeasurement of BB¯¯¯¯ angular correlations based on secondary vertex reconstruction at s√=7TeVes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherVersionhttps://doi.org/10.1007/JHEP03(2011)136es_ES
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1007/JHEP03(2011)136
dc.type.versionpublishedVersiones_ES


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