Exclusive γγ → μ⁺μ⁻ production in proton-proton collisions at √s = 7 TeV
Author(s)
CMS Collaboration; Alver, Burak Han; Bauer, Gerry P; Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Cali, Ivan Amos; Dutta, Valentina; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hahn, Kristian Allan; Harris, Philip Coleman; Kim, Young-Min; Klute, Markus; Lee, Yen-Jie; Luckey Jr, P David; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Roland, Christof E; Roland, Gunther M; Rudolph, Matthew Scott; Stephans, George S. F.; Stoeckli, Fabian; Sumorok, Konstanty C; Sung, Kevin Kai Hong; Velicanu, Dragos Alexandru; Wenger, Edward Allen; Wolf, Roger; Wyslouch, Boleslaw; Xie, Si; Yang, Ming; Yilmaz, Yetkin; Yoon, A. S.; Zanetti, Marco; Chan, M.; Li, W.; ... Show more Show less
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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 p (μ) > 4 GeV and pseudorapidity σ(μ) < 2:1, a t to the dimuon pT(μ + μ⁻) distribution results in a measured cross section of η(p → pμ⁺μ⁻p) = 3:38 [superscript + 0:58][subscript - 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 [superscript + 0:14][subscript - 0:13] (stat:) ± 0:04 (syst:) ± 0:03 (lumi:). The characteristic distributions of the muon pairs produced via fusion, such as the muon acoplanarity, the muon pair invariant mass and transverse momentum agree with those from the theory. Keywords: Hardon-Hadron Scattering
Date issued
2012-01Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
Chatrchyan, S. et al. “Exclusive γγ → μ⁺μ⁻ production in proton-proton collisions at √s = 7 TeV.” Journal of High Energy Physics 2012, 1 (January 2012): 52 © SISSA
Version: Final published version
ISSN
1029-8479