Measurement of the transverse momentum distribution of W bosons in pp collisions at √s=7 TeV with the ATLAS detector
ATLAS Collaboration (Including: Farrington, Sinead). (2012) Measurement of the transverse momentum distribution of W bosons in pp collisions at √s=7 TeV with the ATLAS detector. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.85 (No.1). 012005. ISSN 1550-7998
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Official URL: http://dx.doi.org/10.1103/PhysRevD.85.012005
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 pTW<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.
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