@Article{LHCbCollaborationAaij_etal2015, author="LHCb Collaboration (Aaij, R. et al and Martinez-Vidal, F. and Oyanguren, A. and Ruiz Valls, P. and Sanchez Mayordomo, C.", title="Study of W boson production in association with beauty and charm", journal="Physical Review D", year="2015", publisher="Amer Physical Soc", volume="92", number="5", pages="052001--16pp", abstract="The associated production of a W boson with a jet originating from either a light parton or heavy-flavor quark is studied in the forward region using proton-proton collisions. The analysis uses data corresponding to integrated luminosities of 1.0 and 2.0 fb(-1) collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, respectively. The W bosons are reconstructed using the W -> $\mu$nu decay and muons with a transverse momentum, p(T), larger than 20 GeV in the pseudorapidity range 2.0 < eta < 4.5. The partons are reconstructed as jets with p(T) > 20 GeV and 2.2 < eta < 4.2. The sum of the muon and jet momenta must satisfy p(T) > 20 GeV. The fraction of W + jet events that originate from beauty and charm quarks is measured, along with the charge asymmetries of the W+b and W+c production cross sections. The ratio of the W + jet to Z + jet production cross sections is also measured using the Z -> $\mu$$\mu$decay. All results are in agreement with Standard Model predictions.", optnote="WOS:000360885800001", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2385), last updated on Thu, 01 Oct 2015 17:34:59 +0000", issn="1550-7998", doi="10.1103/PhysRevD.92.052001", opturl="http://arxiv.org/abs/1505.04051", opturl="https://doi.org/10.1103/PhysRevD.92.052001", archivePrefix="arXiv", eprint="1505.04051", language="English" }