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 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) = 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.

S. CHATRCHYAN, V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, et al. (2012). Exclusive gamma gamma -> mu(+)mu(-) production in proton-proton collisions at root s=7TeV. JOURNAL OF HIGH ENERGY PHYSICS, 1, 052-1-052-39 [10.1007/JHEP01(2012)052].

Exclusive gamma gamma -> mu(+)mu(-) production in proton-proton collisions at root s=7TeV

BONACORSI, DANIELE;BRAIBANT, SYLVIE;BRIGLIADORI, LUCA;CAPILUPPI, PAOLO;CASTRO, ANDREA;CUFFIANI, MARCO;FANFANI, ALESSANDRA;FASANELLA, DANIELE;MENEGHELLI, MARCO;NAVARRIA, FRANCESCO LUIGI;PRIMAVERA, FEDERICA;ROVELLI, TIZIANO;SIROLI, GIAN PIERO;GUIDUCCI, LUIGI;
2012

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 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) = 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.
2012
S. CHATRCHYAN, V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, et al. (2012). Exclusive gamma gamma -> mu(+)mu(-) production in proton-proton collisions at root s=7TeV. JOURNAL OF HIGH ENERGY PHYSICS, 1, 052-1-052-39 [10.1007/JHEP01(2012)052].
S. CHATRCHYAN; V. KHACHATRYAN; A.M. SIRUNYAN; A. TUMASYAN; W. ADAM; T. BERGAUER; M. DRAGICEVIC; J. ER.AN(O; C. FABJAN; M. FRIEDL; R. FRUHWIRTH; V.M. G...espandi
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/122151
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 64
  • ???jsp.display-item.citation.isi??? 46
social impact