Exclusive γγ→μ+μ- production in proton-proton collisions at √s = 7 TeV

Gurtu, A. (2011) Exclusive γγ→μ+μ- production in proton-proton collisions at √s = 7 TeV Journal of High Energy Physics, 2012 (1). 52_1-52_35. ISSN 1126-6708

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Official URL: http://www.springerlink.com/content/73617p07hl648w...

Related URL: http://dx.doi.org/10.1007/JHEP01(2012)052


A measurement of the exclusive two-photon production of muon pairs in protonproton 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 pT(μ+μ-) distribution results in a measured cross section of σ(p→pμ+μ-p) = 0.83+0.14-0.13 (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 γγ fusion, such as the muon acoplanarity, the muon pair invariant mass and transverse momentum agree with those from the theory.

Item Type:Article
Source:Copyright of this article belongs to Institute of Physics.
ID Code:92343
Deposited On:29 May 2012 13:57
Last Modified:22 Nov 2019 05:36

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