Chatrchyan, S;
Khachatryan, V;
Sirunyan, AM;
Tumasyan, A;
Adam, W;
Bergauer, T;
Dragicevic, M;
... Collaboration, CMS; + view all
(2012)
Exclusive gamma gamma -> mu(+)mu(-) production in proton-proton collisions at root s=7TeV.
Journal Of High Energy Physics
, 2012
(1)
, Article 052. 10.1007/JHEP01(2012)052.
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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 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+0.58−0.55 (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 γγ fusion, such as the muon acoplanarity, the muon pair invariant mass and transverse momentum agree with those from the theory.
| Type: | Article |
|---|---|
| Title: | Exclusive gamma gamma -> mu(+)mu(-) production in proton-proton collisions at root s=7TeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/JHEP01(2012)052 |
| Publisher version: | http://dx.doi.org/10.1007/JHEP01(2012)052 |
| Language: | English |
| Additional information: | This article is distributed under a CC BY 4.0 license [http://creativecommons.org/licenses/by/4.0/], which which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Hadron-Hadron Scattering |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1345305 |
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