Journal
PHYSICS LETTERS B
Volume 749, Issue -, Pages 242-261Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2015.07.069
Keywords
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Funding
- ANPCyT, Argentina
- YerPhI, Armenia
- ARC, Australia
- BMWFW, Austria
- FWF, Austria
- ANAS, Azerbaijan
- SSTC, Belarus
- CNPq, Brazil
- FAPESP, Brazil
- NSERC Canada
- NRC Canada
- CFI, Canada
- CERN
- CONICYT, Chile
- CAS, China
- MOST, China
- NSFC, China
- COLCIENCIAS, Colombia
- MSMT CR, Czech Republic
- MPO CR, Czech Republic
- VSC CR, Czech Republic
- DNRF, Denmark
- DNSRC, Denmark
- Lundbeck Foundation, Denmark
- EPLANET
- ERC
- NSRF, European Union
- IN2P3-CNRS, France
- CEA-DSM/IRFU, France
- GNSF, Georgia
- BMBF, Germany
- DFG, Germany
- HGF, Germany
- MPG, Germany
- AvH Foundation, Germany
- GSRT, Greece
- NSRF, Greece
- RGC, China
- Hong Kong SAR, China
- ISF, Israel
- MINERVA, Israel
- GIF, Israel
- I-CORE, Israel
- Benoziyo Center, Israel
- INFN, Italy
- MEXT, Japan
- JSPS, Japan
- CNRST, Morocco
- FOM, Netherlands
- NWO, Netherlands
- BRF, Norway
- RCN, Norway
- MNiSW, Poland
- NCN, Poland
- GRICES, Portugal
- FCT, Portugal
- MNE/IFA, Romania
- MES of Russia
- NRC KI
- Russian Federation
- JINR
- MSTD, Serbia
- MSSR, Slovakia
- ARRS, Slovenia
- MIZS, Slovenia
- DST/NRF, South Africa
- MINECO, Spain
- SRC, Sweden
- Wallenberg Foundation, Sweden
- SER, Switzerland
- SNSF, Switzerland
- Cantons of Bern, Switzerland
- Geneva, Switzerland
- NSC, Taiwan
- TAEK, Turkey
- STFC, United Kingdom
- Royal Society, United Kingdom
- Leverhulme Trust, United Kingdom
- DOE, United States of America
- NSF, United States of America
- ICREA Funding Source: Custom
- STFC [ST/K50208X/1, PP/D002915/1, PP/E000355/1, PP/E002846/1, ST/I00372X/1, ST/L001179/1, ST/L003414/1, ST/L001195/1, ST/H001093/1, ST/K001248/1, ST/K00073X/1, ST/N000307/1, ST/J005487/1, ST/J005525/1, ST/K000705/1, ST/M001407/1, ST/M006980/1, ST/L000326/1, ST/J501074/1, ST/N000463/1, ST/J00474X/1, ST/M001504/1, ST/N000420/1, ST/K00140X/1, ST/K001302/1, ST/L003511/1, ST/M002306/1, ST/M503575/1, ST/L00352X/1, ST/M000761/1, ST/M000664/1, ST/K001361/1, ST/N000277/1, ST/L003112/1, ST/I000178/1, ST/K001388/1, ST/M001733/1, ST/K001329/1, ST/M001431/1, ST/H001093/2, ST/G50228X/1, ST/K00137X/1, ST/I006056/1, PP/E000347/1, ST/H00100X/2, ST/L001144/1, ST/H00100X/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/E000347/1, ST/K001361/1 LHCb Upgrades, ST/L003112/1, ST/L00352X/1, ST/H001093/1, 1366825, ST/K001361/1, ST/K001302/1, ST/K001264/1 ATLAS, ST/M000761/1, ST/K001248/1, ST/K001361/1 ATLAS, ST/G50228X/1, ST/L001195/1, ST/M001407/1, ST/M002306/1 ATLAS Upgrades, ST/I000178/1, ST/M006980/1, ST/M002071/1 ATLAS Upgrades, 1521422, PP/D002915/1, ST/J005525/1, ST/M001474/1, ST/M000664/1, ST/J501074/1, ST/L001179/1 ATLAS Upgrades, ST/M503575/1, ST/M007103/1 ATLAS Upgrades, ST/K001310/1 ATLAS, ST/K001361/1 MINOS/MINOS+, ST/I00372X/1 GRIDPP, ST/M001431/1, ST/L001209/1 ATLAS Upgrades, ST/K00137X/1, ST/L001179/1, ST/N000463/1, ST/H001093/2, ST/L003414/1, ST/N000277/1, 1366364, ST/M001504/1, ST/I006056/1, ST/K001418/1, ATLAS, ST/K001329/1, 1575161, ST/K00140X/1, ST/K001426/1 ATLAS, ST/K001310/1 LHCb, ST/L003511/1, ST/K001361/1 LHCb, ST/H00100X/1, ST/J005487/1, ST/K50208X/1, PP/E000355/1, ST/I006056/1 ATLAS Upgrades, ST/I006056/1 ATLAS Upgrade, ST/K001361/1 ATLAS Upgrades, ST/K001310/1 ATLAS Upgrades, ST/L001179/1 ATLAS Upgrade, ST/M002306/1, ST/K00073X/1, GRIDPP, 1082012, 1201187, PP/E000444/1, ST/K001310/1, 1334588, ST/J00474X/1 ATLAS Upgrades, ST/M001733/1, ST/L000326/1, PP/E002846/1, ST/L001144/1, ST/H00100X/2, ST/N000307/1, ST/K001388/1, ST/M006980/1 ATLAS Upgrades, ST/K001310/1 LHCb Upgrades, ST/N000420/1, ST/K000705/1, ST/J00474X/1, ST/I00372X/1] Funding Source: researchfish
- Division Of Physics
- Direct For Mathematical & Physical Scien [1119200] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1506173] Funding Source: National Science Foundation
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This Letter reports a measurement of the exclusive gamma gamma -> l(+)l(-) (l = e, mu) cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV by the ATLAS experiment at the LHC, based on an integrated luminosity of 4.6 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 sigma(excl)(gamma gamma -> e+e-) = 0.428 +/- 0.035 (stat.) +/- 0.018 (syst.) pbfor a phase-space region with invariant mass of the electron pairs greater than 24GeV, in which both electrons have transverse momentum p(T) > 12 GeV and pseudorapidity vertical bar eta vertical bar < 2.4. For muon pairs with invariant mass greater than 20GeV, muon transverse momentum pT> 10 GeV and pseudorapidity vertical bar eta vertical bar < 2.4, the cross-section is determined to be sigma(excl)(gamma gamma -> mu+mu-) = 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. (C) 2015 CERN for the benefit of the ATLAS Collaboration. Published by Elsevier B.V.
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