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Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at (Formula Presented.) = 7 TeV with the ATLAS detector

The, ATLAS collaboration
•
Aad, G.
•
Abbott, B.
altro
Zwalinski, L.
2015
  • journal article

Periodico
JOURNAL OF HIGH ENERGY PHYSICS
Abstract
This paper presents measurements from the ATLAS experiment of the forward-backward asymmetry in the reaction pp -> Z/gamma* -> 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 root s = 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 sin(2) theta(lept)(eff) = 0.2308 +/- 0.0005(stat.)+/- 0.0006(syst.)+/- 0.0009(PDF), where the first uncertainty corresponds to data statistics, the second to s ystematic 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
DOI
10.1007/JHEP09(2015)049
WOS
WOS:000363537800001
Archivio
http://hdl.handle.net/11390/1096261
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84942320141
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942320141&partnerID=40&md5=c55bc6b674c502c1070e007316c48b27
Diritti
metadata only access
Soggetti
  • Hadron-Hadron Scatter...

  • Nuclear and High Ener...

Scopus© citazioni
34
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
56
Data di acquisizione
Mar 23, 2024
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