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

Allbrooke, B M M, Asquith, L, Cerri, A, Chavez Barajas, C A, De Santo, A, Salvatore, F, Santoyo Castillo, I, Suruliz, K, Sutton, M R, Vivarelli, I and The ATLAS Collaboration, et al. (2015) Measurement of the production and lepton charge asymmetry of W bosons in Pb+Pb collisions at √sNN=2.76TeV with the ATLAS detector. The European Physical Journal C - Particles and Fields, 75 (23). ISSN 1434-6044

[img] PDF (© CERN for the benefit of the ATLAS collaboration 2015.) - Published Version
Available under License Creative Commons Attribution.

Download (18MB)

Abstract

A measurement of W boson production in lead-lead collisions at √sNN=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: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Experimental Particle Physics Research Group
Subjects: Q Science > QC Physics
Depositing User: Billy Wichaidit
Date Deposited: 25 Apr 2017 11:50
Last Modified: 25 Apr 2017 13:01
URI: http://sro.sussex.ac.uk/id/eprint/67473

View download statistics for this item

📧 Request an update
Project NameSussex Project NumberFunderFunder Ref
ATLASG0275STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCILST/I006048/1