期刊
PHYSICS LETTERS B
卷 698, 期 5, 页码 325-345出版社
ELSEVIER
DOI: 10.1016/j.physletb.2011.03.012
关键词
W-boson; Jets; ATLAS; LHC; Proton-proton; 7 TeV
资金
- ANPCyT, Argentina
- YerPhI, Armenia
- ARC, Australia
- BMWF, 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
- ARTEMIS, European Union
- IN2P3-CNRS, France
- CEA-DSM/IRFU, France
- GNAS, Georgia
- BMBF, Germany
- DFG, Germany
- HGF, Germany
- MPG, Germany
- AvH Foundation, Germany
- GSRT, Greece
- ISF, Israel
- MINERVA, Israel
- GIF, Israel
- DIP, Israel
- Benoziyo Center, Israel
- INFN, Italy
- JSPS, Japan
- CNRST, Morocco
- FOM, Netherlands
- NWO, Netherlands
- 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/NRF, 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
- Science and Technology Facilities Council [ST/H001166/1, ST/H00095X/2, ST/I005803/1 GRIDPP, ST/G009457/1, ST/H000887/2, PP/E000487/1, ST/J501074/1, ST/I005803/1, ST/H001026/2, ST/H001026/1, PP/E003699/1, ST/G502320/1, ST/H00095X/1, ST/H001093/2, PP/E002838/1, ATLAS, ST/H001069/1, ST/F007418/1, ST/H001077/1, ST/F007337/1, PP/E006388/1, ST/I505756/1, ST/K00073X/1, GRIDPP, PP/E003699/2, PP/E000444/1, ST/F00754X/1, PP/E003087/1, ST/I006080/1, ST/I000186/1, ST/H001093/1, PP/E000347/1] Funding Source: researchfish
- Division Of Physics
- Direct For Mathematical & Physical Scien [855405, 1119200] Funding Source: National Science Foundation
- STFC [ST/H000887/2, ST/G502320/1, PP/E000487/1, ST/I006080/1, ST/F00754X/1, ST/H001093/1, ST/H001166/1, ST/H001026/1, ST/F007418/1, ST/H00095X/1, ST/J501074/1, ST/F007337/1, PP/E003699/2, ST/H001069/1, ST/H00095X/2, ST/I005803/1, PP/E003087/1, ST/I000186/1, ST/H001077/1, ST/I505756/1, ST/H001093/2, ST/K00073X/1, PP/E003699/1, ST/H001026/2, ST/G009457/1, PP/E006388/1, PP/E000347/1, PP/E002838/1] Funding Source: UKRI
This Letter reports on a first measurement of the inclusive W + jets cross section in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC, with the ATLAS detector. Cross sections, in both the electron and muon decay modes of the W-boson, are presented as a function of jet multiplicity and of the transverse momentum of the leading and next-to-leading jets in the event. Measurements are also presented of the ratio of cross sections sigma (W + >= n)/sigma(W + >= n - 1) for inclusive jet multiplicities n = 1-4. The results, based on an integrated luminosity of 1.3 pb(-1), have been corrected for all known detector effects and are quoted in a limited and well-defined range of jet and lepton kinematics. The measured cross sections are compared to particle-level predictions based on perturbative QCD. Next-to-leading order calculations, studied here for n <= 2, are found in good agreement with the data. Leading-order multiparton event generators, normalized to the NNLO total cross section, describe the data well for all measured jet multiplicities. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.
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