Abstract: A measurement of the inclusive W → μν production cross-section using data from pp collisions at a centre-of-mass energy of √s = 7TeV 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 ; pseudorapidity between 2.0 ; 4.5. The W+ ; W- production cross-sections are measured to be (formula presented.). where the first uncertainty is statistical, the second is systematic ; the third is due to the luminosity determination. Cross-section ratios ; 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 (formula presented.). where the uncertainties are statistical ; systematic, respectively. Results are in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics. © 2014, The Author(s).

Measurement of the forward W boson cross-section in pp collisions at √s = 7 TeV

PALANO, Antimo;PAPPAGALLO, MARCO IGNAZIO;
2014-01-01

Abstract

Abstract: A measurement of the inclusive W → μν production cross-section using data from pp collisions at a centre-of-mass energy of √s = 7TeV 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 ; pseudorapidity between 2.0 ; 4.5. The W+ ; W- production cross-sections are measured to be (formula presented.). where the first uncertainty is statistical, the second is systematic ; the third is due to the luminosity determination. Cross-section ratios ; 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 (formula presented.). where the uncertainties are statistical ; systematic, respectively. Results are in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics. © 2014, The Author(s).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/179723
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