10.1007-JHEP09(2015)049.pdf (984.76 kB)
Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at vs=7 TeV with the ATLAS detector
journal contribution
posted on 2023-06-09, 05:57 authored by Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, Antonella De SantoAntonella De Santo, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, K Suruliz, Mark SuttonMark Sutton, Iacopo Vivarelli, et al. The ATLAS CollaborationThis paper presents measurements from the ATLAS experiment of the forward-backward asymmetry in the reaction pp ? Z/?* ? l+l-, with l being electrons or muons, and the extraction of the effective weak mixing angle. The results are based on the full set of data collected in 2011 in pp collisions at the LHC at vs=7 TeV, corresponding to an integrated luminosity of 4.8 fb-1. The measured asymmetry values are found to be in agreement with the corresponding Standard Model predictions. The combination of the muon and electron channels yields a value of the effective weak mixing angle of sin2?efflept?=?0.2308?±?0.0005(stat.)?±?0.0006(syst.)?±?0.0009(PDF), where the first uncertainty corresponds to data statistics, the second to systematic effects and the third to knowledge of the parton density functions. This result agrees with the current world average from the Particle Data Group fit.
Funding
ATLAS; G0275; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/I006048/1
History
Publication status
- Published
File Version
- Published version
Journal
Journal of High Energy PhysicsISSN
1029-8479Publisher
Springer VerlagExternal DOI
Issue
49Volume
2015Department affiliated with
- Physics and Astronomy Publications
Research groups affiliated with
- Experimental Particle Physics Research Group Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2017-04-27First Open Access (FOA) Date
2017-04-27First Compliant Deposit (FCD) Date
2017-04-27Usage metrics
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