A measurement of the inclusive W → μ ν production cross-section using data from pp collisions at a centre-of-mass energy of √s = 7 TeV is presented. The analysis is based on an integrated luminosity of about 1.0 fb^−1 recorded with the LHCb detector. Results are reported for muons with a transverse momentum greater than 20 GeV/c and pseudorapidity between 2.0 and 4.5. The W+ and W− production cross-sections are measured to be σ{W+ → μ+ ν} = 861.0 ± 2.0 ± 11.2 ± 14.7 pb, σ{W− → μ− anti-ν} = 675.8 ± 1.9 ± 8.8 ± 11.6 pb, where the first uncertainty is statistical, the second is systematic and the third is due to the luminosity determination. Cross-section ratios and differential distributions as functions of the muon pseudorapidity are also presented. The ratio of W+ to W− cross-sections in the same fiducial kinematic region is determined to be σ{W+ → μ+ ν}/σ{W− → μ− anti-ν} = 1.274 ± 0.005 ± 0.009, where the uncertainties are statistical and systematic, respectively. Results are in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics.

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2014). Measurement of the Forward W Boson Cross-Section in pp Collisions at √s = 7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2014(12), 0-24 [10.1007/JHEP12(2014)079].

Measurement of the Forward W Boson Cross-Section in pp Collisions at √s = 7 TeV

CARBONE, ANGELO;GALLI, DOMENICO;MOGGI, NICCOLO';MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2014

Abstract

A measurement of the inclusive W → μ ν production cross-section using data from pp collisions at a centre-of-mass energy of √s = 7 TeV is presented. The analysis is based on an integrated luminosity of about 1.0 fb^−1 recorded with the LHCb detector. Results are reported for muons with a transverse momentum greater than 20 GeV/c and pseudorapidity between 2.0 and 4.5. The W+ and W− production cross-sections are measured to be σ{W+ → μ+ ν} = 861.0 ± 2.0 ± 11.2 ± 14.7 pb, σ{W− → μ− anti-ν} = 675.8 ± 1.9 ± 8.8 ± 11.6 pb, where the first uncertainty is statistical, the second is systematic and the third is due to the luminosity determination. Cross-section ratios and differential distributions as functions of the muon pseudorapidity are also presented. The ratio of W+ to W− cross-sections in the same fiducial kinematic region is determined to be σ{W+ → μ+ ν}/σ{W− → μ− anti-ν} = 1.274 ± 0.005 ± 0.009, where the uncertainties are statistical and systematic, respectively. Results are in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics.
2014
R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2014). Measurement of the Forward W Boson Cross-Section in pp Collisions at √s = 7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2014(12), 0-24 [10.1007/JHEP12(2014)079].
R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/401160
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