UNIGE document Scientific Article
previous document  unige:75558  next document
add to browser collection
Title

Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at √s = 7 TeV with the ATLAS detector
CollaborationWith : Alexandre, Gauthier / Ancu, Lucian Stefan / Barone, Gaetano / Bell, Paul / Bell, William / Benhar Noccioli, Eleonora / Bilbao De Mendizabal, Javier / Bucci, Francesca / Camacho Toro, Reina / Clark, Allan Geoffrey / Delitzsch, Chris Malena / Della Volpe, Domenico / Doglioni, Caterina / Ferrere, Didier / Gadomski, Szymon / Gonzalez Sevilla, Sergio / Goulette, Marc / Gramling, Johanna Léna / Guescini, Francesco / Iacobucci, Giuseppe / Katre, Akshay / La Rosa, Alessandro / Mermod, Philippe / Miucci, Antonio / Muenstermann, Daniel / Nektarijevic, Snezana / Nessi, Marzio / Nikolics, Katalin / Picazio, Attilio / Pohl, Martin / Rosbach, Kilian / Vallecorsa, Sofia / Wu, Xin
Published in The journal of high energy physics. 2015, vol. 1509, p. 049-92
Collection Open Access - SCOAP3
Abstract This paper presents measurements from the ATLAS experiment of the forward-backward asymmetry in the reaction pp → Z/γ * → 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 √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 θ eff lept  = 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.
Keywords Hadron-Hadron Scattering
Identifiers
arXiv: 1503.03709
Full text
Article (Published version) - public document Free access
Structures
Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire
Citation
(ISO format) 		ATLAS COLLABORATION. Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at √s = 7 TeV with the ATLAS detector. In: The journal of high energy physics, 2015, vol. 1509, p. 049-92. doi: 10.1007/JHEP09(2015)049 https://archive-ouverte.unige.ch/unige:75558

422 hits

89 downloads

Contact an author

Update request

Update

Deposited on : 2015-10-01

Export document
Format :
Citation style :