Measurement of the W charge asymmetry in the W→μν decay mode in pp collisions at s=7 TeV with the ATLAS detector

Measurement of theW→eνandZ/γ*→e+e−Adamczyk1, Agakishiev2, Aggarwal3 et al. 2012Phys. Rev. DSelf Cite242130View full textAdd to dashboardCite

“…Drell-Yan experiments [17,18] have measured a large asymmetry in this x range, and precision measurements of R W at RHIC can provide independent constraints on the flavor asymmetry which are free from the assumption of charge symmetry required in Drell-Yan. Measurements of the lepton charge asymmetry at the LHC [33,34] provide similar constraints on the quark and antiquark PDFs, though at significantly lower x due to the much higher energy of the collisions.…”

Measurement of theWBoson Production Charge Asymmetry inpp¯→W+X→Abazov1, Abbott2, Acharya3 et al. 2014Phys. Rev. Lett.Self Cite340250View full textAdd to dashboardCite

“…The latest lepton charge asymmetry measurement from the D0 Collaboration was performed in the W → µν muon channel by using data corresponding to 7.3 fb −1 of integrated luminosity [9]. The lepton charge asymmetry has also been measured at the Large Hadron Collider (LHC) in pp collisions by the ATLAS [10] and CMS [11] Collaborations by using integrated luminosities of 0.03 and 0.84 fb −1 , respectively. A direct measurement of the W boson charge asymmetry was performed by using 1 fb −1 of integrated luminosity by the CDF [12] Collaboration.…”

ATLAS Masterclasses –WandZpath physics and presentation of theZpath measurement

“…The students doing the W path measurement are thus performing a measurement which is close to an actual important physics measurement performed by the ATLAS collaboration. A plot from the ATLAS analysis of the W charge asymmetry in the muon decay channel [8] is shown in figure 5. Instead of the charge ratio N W + /N W − , the closely related charge asymmetry…”