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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/185690
Measurement of the forward $W$ boson cross-section in $pp$ collisions at $\sqrt{s} = 7 {\rm \, TeV}$
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A measurement of the inclusive W → µν 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 σW+→µ+ν = 861.0 ± 2.0 ± 11.2 ± 14.7 pb, σW−→µ−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 σW+→µ+ν σW−→µ−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.
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GARRIDO BELTRÁN, Lluís, GRACIANI DÍAZ, Ricardo, GRAUGÉS POUS, Eugeni, MARIN BENITO, Carla, RIVES MOLINA, Vicente josé, RUIZ, Hugo (ruiz pérez), LHCb Collaboration. Measurement of the forward $W$ boson cross-section in $pp$ collisions at $\sqrt{s} = 7 {\rm \, TeV}$. _Journal of High Energy Physics_. 2014. Vol. 2021, núm. 1-29. [consulta: 21 de gener de 2026]. ISSN: 1126-6708. [Disponible a: https://hdl.handle.net/2445/185690]