Exclusive photon-photon production of muon pairs in proton-proton collisions at sqrt(s) = 7 TeV
(2012) Journal of High Energy Physics — Vol. 1201, n° 1, p. 52 (2012)
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- Abstract
- A measurement of the exclusive two-photon production of muon pairs in proton-proton collisions at sqrt(s)= 7 TeV, pp to p mu^+ mu^- p, is reported using data corresponding to an integrated luminosity of 40 inverse picobarns. For muon pairs with invariant mass greater than 11.5 GeV, transverse momentum pT(mu) > 4 GeV and pseudorapidity |eta(mu)| < 2.1, a fit to the dimuon pt(mu^+ mu^-) distribution results in a measured cross section of sigma(pp to p mu^+ mu^- 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 [+0.14-0.13] (stat.) +/- 0.04 (syst.) +/- 0.03 (lumi.). The characteristic distributions of the muon pairs produced via photon-photon fusion, such as the muon acoplanarity, the muon pair invariant mass and transverse momentum agree with those from the theory.
- Affiliations
- Yerevan Phys. Inst.
Citations
CMS Collaboration, Quertenmont, L., Chatrchyan, S., Basegmez, S., Bruno, G., Ceard, L., Cortina Gil, E., de Favereau de Jeneret, J., Delaere, C., Favart, D., Forthomme, L., Giammanco, A., Grégoire, G., Hollar, J., Lemaitre, V., Liao, J., Militaru, O., Nuttens, C., Ovyn, S., et al. (2012). Exclusive photon-photon production of muon pairs in proton-proton collisions at sqrt(s) = 7 TeV. Journal of High Energy Physics, 1201(1), 52. https://doi.org/10.1007/JHEP01(2012)052 (Original work published 2012)