Measurement of the Drell-Yan cross section in pp collisions at ps = 7 TeV

41 páginas, 4 figuras, 11 tablas.-- Open Access: This article is distributed under the terms of the Creative Commons\ud
Attribution Noncommercial License.-- CMS Collaboration: et al.The Drell-Yan differential cross section is measured in pp collisions at (raiz de 8) = 7TeV, from a data sample collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 36 pb−1. The cross section measurement, normalized to the measured cross section in the Z region, is reported for both the dimuon and dielectron channels in the dilepton invariant mass range 15–600 GeV. The normalized cross section values are quoted both in the full phase space and within the detector acceptance. The effect of final state radiation is also identified. The results are found to agree with theoretical predictions.This work was supported by the Austrian Federal\ud
Ministry of Science and Research; the Belgium Fonds de la Recherche Scienti que, and\ud
Fonds voor Wetenschappelijk Onderzoek; the Brazilian Funding Agencies (CNPq, CAPES,\ud
FAPERJ, and FAPESP); the Bulgarian Ministry of Education and Science; CERN; the Chinese Academy of Sciences, Ministry of Science and Technology, and National Natural\ud
Science Foundation of China; the Colombian Funding Agency (COLCIENCIAS); the\ud
Croatian Ministry of Science, Education and Sport; the Research Promotion Foundation,\ud
Cyprus; the Estonian Academy of Sciences and NICPB; the Academy of Finland, Finnish\ud
Ministry of Education and Culture, and Helsinki Institute of Physics; the Institut National\ud
de Physique Nucléaire et de Physique des Particules / CNRS, and Commissariat à l'Énergie\ud
Atomique et aux Énergies Alternatives / CEA, France; the Bundesministerium für Bildung\ud
und Forschung, Deutsche Forschungsgemeinschaft, and Helmholtz-Gemeinschaft Deutscher\ud
Forschungszentren, Germany; the General Secretariat for Research and Technology, Greece;\ud
the National Scienti c Research Foundation, and National Office for Research and Technology,\ud
Hungary; the Department of Atomic Energy and the Department of Science and\ud
Technology, India; the Institute for Studies in Theoretical Physics and Mathematics, Iran;\ud
the Science Foundation, Ireland; the Istituto Nazionale di Fisica Nucleare, Italy; the Korean\ud
Ministry of Education, Science and Technology and the World Class University program of\ud
NRF, Korea; the Lithuanian Academy of Sciences; the Mexican Funding Agencies (CINVESTAV,\ud
CONACYT, SEP, and UASLP-FAI); the Ministry of Science and Innovation, New Zealand; the Pakistan Atomic Energy Commission; the State Commission for Scientifi c Research, Poland; the Fundaçâo para a Ciência e a Tecnologia, Portugal; JINR (Armenia,\ud
Belarus, Georgia, Ukraine, Uzbekistan); the Ministry of Science and Technologies of\ud
the Russian Federation, the Russian Ministry of Atomic Energy and the Russian Foundation\ud
for Basic Research; the Ministry of Science and Technological Development of Serbia;\ud
the Ministerio de Ciencia e Innovación, and Programa Consolider-Ingenio 2010, Spain; the\ud
Swiss Funding Agencies (ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, and\ud
SER); the National Science Council, Taipei; the Scienti c and Technical Research Council\ud
of Turkey, and Turkish Atomic Energy Authority; the Science and Technology Facilities\ud
Council, UK; the US Department of Energy, and the US National Science Foundation.\ud
Individuals have received support from the Marie-Curie programme and the European\ud
Research Council (European Union); the Leventis Foundation; the A. P. Sloan Foundation;\ud
the Alexander von Humboldt Foundation; the Associazione per lo Sviluppo Scienti co e\ud
Tecnologico del Piemonte (Italy); the Belgian Federal Science Policy Office; the Fonds\ud
pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium);\ud
the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); and the\ud
Council of Science and Industrial Research, India; the European Union Structural Funds\ud
project `Postdoctoral Fellowship Implementation in Lithuania'.Peer reviewe