UNSPECIFIED (2012) Measurement of the transverse momentum distribution of W bosons in pp collisions at s√=7 TeV with the ATLAS detector. Physical Review D, 85 (1): 012005. ISSN 1550-7998
PhysRevD.85.012005.pdf - Published Version
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Abstract
This paper describes a measurement of the W boson transverse momentum distribution using ATLAS pp collision data from the 2010 run of the LHC at s√=7 TeV, corresponding to an integrated luminosity of about 31 pb−1. Events form both W→eν and W→μν are used, and the transverse momentum of the W candidates is measured through the energy deposition in the calorimeter from the recoil of the W. The resulting distributions are unfolded to obtain the normalized differential cross sections as a function of the W boson transverse momentum. We present results for pWT<300 GeV in the electron and muon channels as well as for their combination, and compare the combined results to the predictions of perturbative QCD and a selection of event generators.