Measurement of the production and lepton charge asymmetry of W bosons in Pb+Pb collisions at √sNN=2.76TeV with the ATLAS detector

Allison, Lee and Barton, Adam and Beattie, Michael and Borissov, Guennadi and Bouhova-Thacker, Eva and Chilingarov, Alexandre and Dearnaley, William and Fox, Harald and Grimm, Kathryn and Henderson, Robert and Hughes, Gareth and Jones, Roger William Lewis and Kartvelishvili, Vakhtang and Long, Robin and Love, Peter and Maddocks, Harvey and Smizanska, Maria and Walder, James (2015) Measurement of the production and lepton charge asymmetry of W bosons in Pb+Pb collisions at √sNN=2.76TeV with the ATLAS detector. European Physical Journal C: Particles and Fields, 75. ISSN 1434-6044

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Abstract

A measurement of W boson production in lead-lead collisions at root s(NN) = 2.76 TeV is presented. It is based on the analysis of data collected with the ATLAS detector at the LHC in 2011 corresponding to an integrated luminosity of 0.14 nb(-1) and 0.15 nb(-1) in the muon and electron decay channels, respectively. The differential production yields and lepton charge asymmetry are each measured as a function of the average number of participating nucleons < N-part > and absolute pseudorapidity of the charged lepton. The results are compared to predictions based on next-to-leading-order QCD calculations. These measurements are, in principle, sensitive to possible nuclear modifications to the parton distribution functions and also provide information on scaling of W boson production in multi-nucleon systems.

Item Type:
Journal Article
Journal or Publication Title:
European Physical Journal C: Particles and Fields
Additional Information:
The final publication is available at Springer via http://dx.doi.org/10.1140/epjc/s10052-014-3231-6
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2201
Subjects:
ID Code:
74032
Deposited By:
Deposited On:
18 Jun 2015 05:59
Refereed?:
Yes
Published?:
Published
Last Modified:
02 Jul 2020 01:55