Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 1, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP01(2013)086
Keywords
Hadron-Hadron Scattering
Categories
Funding
- ANPCyT, At YerPhI, Armenia
- ARC, Australia
- BMWF, 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, European Union
- ERC, European Union
- NSRF, European Union
- IN2P3-CNRS, France
- CEA-DSM/IRFU, France
- GNSF, Georgia
- BMBF, Germany
- DFG, Germany
- HGF, Germany
- MPG, Germany
- AvII Foundation, Germany
- GSRT, Greece
- NSRF, Greece
- ISF, Israel
- MINERVA, Israel
- GIF, Israel
- DIP, Israel
- Benoziyo Center, Israel
- INFN, Italy
- MEXT, Japan
- JSPS, Japan
- CNRST, Morocco
- FOM, Netherlands
- NWO, Netherlands
- BRF, Norway
- RCN, Norway
- MNiSW, Poland
- GRICES, Portugal
- FCT, Portugal
- MERYS (MECTS), Romania
- MES of Russia, Russian Federation
- ROSATOM, Russian Federation
- JINR
- MSTD, Serbia
- MSSR, Slovakia
- ARRS, Slovenia
- MVZT, Slovenia
- DST/NRE, South Africa
- MICINN, Spain
- SRC, Sweden
- Wallenberg Foundation, Sweden
- SER, Switzerland
- SNSF, Switzerland
- Cantons of Bern and 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, ST/I005811/1, ST/H001042/1, ST/K000659/1, ST/J004928/1, ST/K003658/1, ST/G502320/1, PP/E000487/1, ST/I006080/1, ST/J005533/1, ST/L001004/1, ST/F00754X/1, ST/K003496/1, ST/K501840/1, ST/H001026/1, ST/K000640/1, ST/M000753/1, ST/F007418/1, PP/E002757/1, ST/H00095X/1, ST/J501074/1, ST/F007337/1, ST/H001042/2, ST/J004944/1, ST/L003325/1, PP/E003699/2, ST/K003437/1, ST/L00352X/1, ST/J005568/1, ST/M000761/1, ST/J005576/1, ST/H001069/2, ST/K000713/1, ST/M000664/1, ST/L000970/1, ST/K001361/1, ST/H00095X/2, ST/I003525/1, ST/I005803/1, ST/J005460/1, PP/E003087/1, ST/I000186/1, ST/K001388/1, ST/M001431/1, ST/I505756/1, ST/K001248/1, ST/J005541/1, ST/K00073X/1, ST/K00137X/1, ST/M001512/1, PP/E003699/1, ST/H001026/2, ST/K001337/1, ST/L001144/1, ST/J004936/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/L003325/1, PP/E000347/1, ST/K001361/1 LHCb Upgrades, ST/L00352X/1, ST/H001042/1, ST/H001042/2, ST/H001093/1, ST/K001361/1, ST/K501840/1, ST/K001337/1, ST/K001264/1 ATLAS, ST/H00095X/2, ST/I005803/1 GRIDPP, ST/M000761/1, ST/K001248/1, ST/K001361/1 ATLAS, ST/K00140X/1 ATLAS, ST/I003525/1, PP/E002757/1, ST/K000659/1, ST/L000970/1 ATLAS Upgrade, ST/K003658/1 GRIDPP, ST/K001329/1 ATLAS, PP/E000487/1, ST/M000664/1, ST/J501074/1, ST/K003658/1, ST/J005533/1, ST/I005803/1, ST/H001026/2, ST/K001361/1 MINOS/MINOS+, ST/H001069/2, ST/H001026/1, ST/L001004/1, ST/M001512/1, ST/M001431/1, PP/E003699/1, ST/G502320/1, ST/K00137X/1, ST/K501840/1 GRIDPP, ST/H00095X/1, ST/H001093/2, ST/K003437/1 GRIDPP, ST/J004944/1, ATLAS, ST/K00140X/1, ST/J004928/1 ATLAS Upgrade, ST/K001361/1 LHCb, ST/L000970/1, ST/F007418/1, ST/J004928/1 ATLAS Upgrades, ST/K50208X/1, ST/K001248/1 ATLAS, ST/K003496/1 GRIDPP, ST/K001361/1 ATLAS Upgrades, ST/F007337/1, ST/I505756/1, ST/K00073X/1, ST/J005460/1, GRIDPP, PP/E003699/2, ST/K003437/1, ST/J004936/1, ST/F00754X/1, ST/J005541/1, ST/L001144/1, PP/E003087/1, ST/J004928/1, ST/I006080/1, ST/K001337/1 ATLAS, ST/J005568/1, ST/I000186/1, ST/K001388/1, ST/K003496/1, ST/J005576/1, ST/K000713/1, ST/I005811/1, ST/L000970/1 ATLAS Upgrades] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Physics [1206092] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1119200] Funding Source: National Science Foundation
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The ATLAS experiment at the LHC has measured the production cross section of events with two isolated photons in the final state, in proton-proton collisions at root s = 7 TeV. The full data set collected in 2011, corresponding to an integrated luminosity of 4.9 fb(-1), is used. The amount of background, from hadronic jets and isolated electrons, is estimated with data-driven techniques and subtracted. The total cross section, for two isolated photons with transverse energies above 25 GeV and 22 GeV respectively, in the acceptance of the electromagnetic calorimeter (vertical bar eta vertical bar < 1.37 and 1.52 < vertical bar eta vertical bar 2.37) and with an angular separation Delta R > 0.4, is 44.0(-4.2)(+3.2) pb. The differential cross sections as a function of the di-photon invariant mass, transverse momentum, azimuthal separation, and cosine of the polar angle of the largest transverse energy photon in the Collins-Soper di-photon rest frame are also measured. The results are compared to the prediction of leading-order parton-shower and next-to-leading-order and next-to-next-to-leading-order parton-level generators.
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