Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/51923
Título : Exclusive γγ → μ+μ− production in proton-proton collisions at Ös = 7 \sqrt {s} = {7} TeV
Autor : Chatrchyan, S., Brochero Cifuentes, J. A., Cabrillo, I. J., Calderón, A., Chuang, S. H., Duarte Campderros, J., Felcini, M., Fernández, M., Gómez, G., González Sánchez, J., Jorda, C., Lobelle Pardo, P., López Virto, A., Marco, Jesús, Marco, Rafael, Martínez-Rivero, Celso, Matorras, Francisco, Muñoz Sánchez, F. J., Piedra, Jonatan, Rodrigo, Teresa, Rodriguez Marrero, Ana Y., Ruiz Jimeno, Alberto, Scodellaro, Luca, Sobron Sañudo, M., Vila, Iván, Vilar, Rocío, CMS collaboration
Fecha de publicación : 2012
Editor: Springer
Citación : Journal of High Energy Physics 2012: 52 (2012)
Resumen: A measurement of the exclusive two-photon production of muon pairs in proton-proton collisions at Ös = 7 \sqrt {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 p T (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 - 0.55 + 0.58 {3}.{38}_{{ - 0.{55}}}^{{ + 0.58}} (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 - 0.13 + 0.58 0.{83}_{{ - 0.{13}}}^{{ + 0.58}} (stat.) ± 0.04 (syst.) ± 0.03 (lumi.). The characteristic distributions of the muon pairs produced via γγ fusion, such as the muon acoplanarity, the muon pair invariant mass and transverse momentum agree with those from the theory.
Descripción : Open Access.-- Chatrchyan, S. et al.
Versión del editor: http://dx.doi.org/10.1007/JHEP01(2012)052
URI : http://hdl.handle.net/10261/51923
Identificadores: doi: 10.1007/JHEP01(2012)052
e-issn: 1126-6708
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