@article{10902/26662,
year = {2012},
month = {1},
url = {https://hdl.handle.net/10902/26662},
abstract = {A measurement of the exclusive two-photon production of muon pairs in proton-proton collisions at √s=7 TeV, pp→pµ + µ-p, is reported using data corresponding to an integrated luminosity of 40 pb-1. For muon pairs with invariant mass greater than 11.5 GeV, transverse momentum pt (µ) > 4 GeV and pseudorapidity | η(µ)| < 2.1, a fit to the dimuon p T (µ + µ -) distribution results in a measured cross section of σ(p →  pµ + µ -p) = 3.38+0.58?0.55 (stat.) ± 0.16 (syst.) ± 0.14 (lumi.) pb, consistent with the theoretical prediction evaluated with the event generator LPAIR. The ratio to the predicted cross section is 0.83+0.58?0.13 (stat.) ± 0.04 (syst.) ± 0.03 (lumi.). The characteristic distributions of the muon pairs produced via ϒϒ fusion, such as the muon acoplanarity, the muon pair invariant mass and transverse momentum agree with those from the theory.},
organization = {We wish to congratulate our colleagues in the CERN accelerator departments for the excellent  performance of the LHC machine. We thank the technical and administrative sta_  at CERN and other CMS institutes. This work was supported by the Austrian Federal  Ministry of Science and Research; the Belgium Fonds de la Recherche Scienti_que, 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 Estonian Academy of Sciences and NICPB; 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 Scienti_c Research Foundation, and National O_ce 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, Korea; the Lithuanian Academy of Sciences; the Mexican Funding Agencies (CINVESTAV,  CONACYT, SEP, and UASLP-FAI); the Ministry of Science and Innovation,  New Zealand; the Pakistan Atomic Energy Commission; the State Commission for Scienti  _c Research, Poland; the Funda_c~ao para a Ci^encia e a Tecnologia, Portugal; JINR  (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); the Ministry of Science and Technologies  of the Russian Federation, the Russian Ministry of Atomic Energy and the Russian  Foundation for Basic Research; the Ministry of Science and Technological Development  of Serbia; the Ministerio de Ciencia 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 Scienti_c and Technical  Research Council of Turkey, and Turkish Atomic Energy Authority; the Science and Technology  Facilities Council, U.K.; the U.S. Department of Energy, and the U.S. National  Science Foundation.},
publisher = {Springer Verlag},
publisher = {Journal of High Energy Physics 1 (2012) 052,  pp. 1-20},
title = {Exclusive  ϒϒ→ µ+µ- production in proton-proton collisions at √s = 7 TeV},
author = {Chatrchyan, S. and Brochero Cifuentes, Javier Andrés and Cabrillo Bartolomé, José Iban and Calderón Tazón, Alicia and Chuang, S. H. and Duarte Campderros, Jorge and Felcini, Marta and Fernández García, Marcos and Gómez Gramuglio, Gervasio and González Sánchez, Francisco Javier and Jordá Lope, Clara and Lobelle Pardo, Patricia and López Virto, María Amparo and Marco de Lucas, Jesús and Marco de Lucas, Rafael José and Martínez Rivero, Celso and Matorras Weinig, Francisco and Muñoz Sánchez, Francisca Javiela and Piedra Gómez, Jonatan and Rodrigo Anoro, Teresa and Rodríguez Marrero, Ana Yaiza and Ruiz Jimeno, Alberto and Scodellaro, Luca and Sobrón Sañudo, Mar and Vila Álvarez, Iván  and Vilar Cortabitarte, Rocío},
}