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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/96856
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dc.contributor.authorChatrchyan, S.-
dc.contributor.authorBrochero Cifuentes, J. A.-
dc.contributor.authorCabrillo, I. J.-
dc.contributor.authorCalderon, Alicia-
dc.contributor.authorChuang, S. H.-
dc.contributor.authorDuarte Campderros, J.-
dc.contributor.authorFernández-García, Marcos-
dc.contributor.authorGómez, Gervasio-
dc.contributor.authorGonzález Sánchez, J.-
dc.contributor.authorGraziano, A.-
dc.contributor.authorJorda, C.-
dc.contributor.authorMarco, Jesús-
dc.contributor.authorMarco, Rafael-
dc.contributor.authorMartínez-Rivero, Celso-
dc.contributor.authorMatorras, Francisco-
dc.contributor.authorMuñoz Sánchez, F. J.-
dc.contributor.authorRodrigo, Teresa-
dc.contributor.authorRodríguez Marrero, Ana Y.-
dc.contributor.authorRuiz Jimeno, Alberto-
dc.contributor.authorScodellaro, Luca-
dc.contributor.authorVila, Iván-
dc.contributor.authorVilar Cortabitarte, R.-
dc.contributor.authorSwanson, J.-
dc.date.accessioned2014-05-19T10:51:22Z-
dc.date.available2014-05-19T10:51:22Z-
dc.date.issued2014-02-04-
dc.identifier.citationJournal of High Energy Physics 2014:13 (2014)es_ES
dc.identifier.urihttp://hdl.handle.net/10261/96856-
dc.descriptionChatrchyan, S. et al.-
dc.description.abstractMeasurements are presented of the associated production of a W boson and a charm-quark jet (W + c) in pp collisions at a center-of-mass energy of 7 TeV. The analysis is conducted with a data sample corresponding to a total integrated luminosity of 5 fb−1, collected by the CMS detector at the LHC. W boson candidates are identified by their decay into a charged lepton (muon or electron) and a neutrino. The W + c measurements are performed for charm-quark jets in the kinematic region pjetT > 25 GeV, |ηjet| < 2.5, for two different thresholds for the transverse momentum of the lepton from the W-boson decay, and in the pseudorapidity range |ηℓ| < 2.1. Hadronic and inclusive semileptonic decays of charm hadrons are used to measure the following total cross sections: σ(pp → W + c + X) × B (W → ℓν) = 107.7 ± 3.3 (stat.) ± 6.9 (syst.) pb ( pℓT > 25 GeV) and σ(pp → W + c + X)× B (W → ℓν) = 84.1 ± 2.0 (stat.) ± 4.9 (syst.) pb ( pℓT > 35 GeV), and the cross section ratios σ(pp → W+ + c¯ + X)/σ(pp → W− + c + X) = 0.954 ± 0.025 (stat.) ± 0.004 (syst.) ( pℓT > 25 GeV) and σ(pp → W+ + c¯ + X)/σ(pp → W− + c + X) = 0.938 ± 0.019 (stat.) ± 0.006 (syst.) ( pℓT > 35 GeV). Cross sections and cross section ratios are also measured differentially with respect to the absolute value of the pseudorapidity of the lepton from the W-boson decay. These are the first measurements from the LHC directly sensitive to the strange quark and antiquark content of the proton. Results are compared with theoretical predictions and are consistent with the predictions based on global fits of parton distribution functions.es_ES
dc.description.sponsorshipWe acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: the Austrian Federal Ministry of Science and Research and the Austrian Science Fund; the Belgian Fonds de la Recherche Scientifique, and Fonds voor Wetenschappelijk Onderzoek; the Brazilian Funding Agencies (CNPq, CAPES, FAPERJ, and FAPESP); the Bulgarian Ministry of Education and Science; CERN; the Chinese Academy of Sciences, Ministry of Science and Technology, and National Natural Science Foundation of China; the Colombian Funding Agency (COLCIENCIAS); the Croatian Ministry of Science, Education and Sport; the Research Promotion Foundation, Cyprus; the Ministry of Education and Research, Recurrent financing contract SF0690030s09 and European Regional Development Fund, Estonia; the Academy of Finland, Finnish Ministry of Education and Culture, and Helsinki Institute of Physics; the Institut National de Physique Nucl´eaire et de Physique des Particules / CNRS, and Commissariat `a l’´Energie Atomique et aux ´Energies Alternatives / CEA, France; the Bundesministerium f¨ur Bildung und Forschung, Deutsche Forschungsgemeinschaft, and Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany; the General Secretariat for Research and Technology, Greece; the National Scientific Research Foundation, and National Office for Research and Technology, Hungary; the Department of Atomic Energy and the Department of Science and Technology, India; the Institute for Studies in Theoretical Physics and Mathematics, Iran; the Science Foundation, Ireland; the Istituto Nazionale di Fisica Nucleare, Italy; the Korean Ministry of Education, Science and Technology and the World Class University program of NRF, Republic of Korea; the Lithuanian Academy of Sciences; the Mexican Funding Agencies (CINVESTAV, CONACYT, SEP, and UASLP-FAI); the Ministry of Business, Innovation and Employment, New Zealand; the Pakistan Atomic Energy Commission; the Ministry of Science and Higher Education and the National Science Centre, Poland; the Funda¸c˜ao para a Ciˆencia e a Tecnologia, Portugal; JINR, Dubna; the Ministry of Education and Science of the Russian Federation, the Federal Agency of Atomic Energy of the Russian Federation, Russian Academy of Sciences, and the Russian Foundation for Basic Research; the Ministry of Education, Science and Technological Development of Serbia; the Secretar´ıa de Estado de Investigacion, Desarrollo e Innovaci´on and Programa Consolider-Ingenio 2010, Spain; the Swiss Funding Agencies (ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, and SER); the National Science Council, Taipei; the Thailand Center of Excellence in Physics, the Institute for the Promotion of Teaching Science and Technology of Thailand, Special Task Force for Activating Research and the National Science and Technology Development Agency of Thailand; the Scientific and Technical Research Council of Turkey, and Turkish Atomic Energy Authority; the Science and Technology Facilities Council, U.K.; the US Department of Energy, and the US National Science Foundation.es_ES
dc.language.isoenges_ES
dc.publisherSpringer Naturees_ES
dc.relation.isversionofPublisher's versiones_ES
dc.rightsopenAccesses_ES
dc.subjectHadron-Hadron Scatteringes_ES
dc.titleMeasurement of associated W + charm production in pp collisions at √s = 7 TeVes_ES
dc.typeartículoes_ES
dc.identifier.doi10.1007/JHEP02(2014)013-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1007/JHEP02(2014)013es_ES
dc.identifier.e-issn1029-8479-
dc.rights.licensehttp://creativecommons.org/licenses/by/4.0/es_ES
dc.contributor.funderSCOAP-
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.openairetypeartículo-
item.grantfulltextopen-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
item.languageiso639-1en-
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