10-1016-JPhysLettB-2015-07-069.pdf (1.41 MB)
Measurement of exclusive ???l+l-???l+l- production in proton–proton collisions at View the MathML sources=7 TeV with the ATLAS detector
journal contribution
posted on 2023-06-09, 01:46 authored by Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, Carlos Chavez Barajas, Antonella De Santo, Tina Potter, Fabrizio SalvatoreFabrizio Salvatore, Itzebelt Santoyo Castillo, Kerim Suruliz, Mark SuttonMark Sutton, Iacopo Vivarelli, et al The ATLAS CollaborationThis Letter reports a measurement of the exclusive ???l+l-???l+l- (l=e, µl=e, µ) cross-section in proton–proton collisions at a centre-of-mass energy of 7 TeV7 TeV by the ATLAS experiment at the LHC, based on an integrated luminosity of 4.6 fb-14.6 fb-1. For the electron or muon pairs satisfying exclusive selection criteria, a fit to the dilepton acoplanarity distribution is used to extract the fiducial cross-sections. The cross-section in the electron channel is determined to be View the MathML sources???e+e-excl.=0.428 ± 0.035 (stat.) ± 0.018 (syst.) pb for a phase–space region with invariant mass of the electron pairs greater than 24 GeV24 GeV, in which both electrons have transverse momentum pT>12 GeVpT>12 GeV and pseudorapidity |?|<2.4|?|<2.4. For muon pairs with invariant mass greater than 20 GeV20 GeV, muon transverse momentum pT>10 GeVpT>10 GeV and pseudorapidity |?|<2.4|?|<2.4, the cross-section is determined to be View the MathML sources???µ+µ-excl.=0.628 ± 0.032 (stat.) ± 0.021 (syst.) pb. When proton absorptive effects due to the finite size of the proton are taken into account in the theory calculation, the measured cross-sections are found to be consistent with the theory prediction.
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- Published
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- Published version
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Physics Letters BISSN
0370-2693Publisher
ElsevierExternal DOI
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749Page range
242-261Department affiliated with
- Physics and Astronomy Publications
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- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2016-06-20First Open Access (FOA) Date
2016-06-20First Compliant Deposit (FCD) Date
2016-06-20Usage metrics
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