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Measurement of the Electron Charge Asymmetry in Inclusive W Production in pp Collisions at √s=7  TeV

(CMS Collaboration) Chatrchyan, S.; Brigljević, Vuko; Đurić, Senka; Kadija, Krešo; Luetić, Jelena; Morović, Srećko (2012) Measurement of the Electron Charge Asymmetry in Inclusive W Production in pp Collisions at √s=7  TeV. Physical Review Letters, 109 (11). 111806/1-111806/15. ISSN 0031-9007

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Abstract

A measurement of the electron charge asymmetry in inclusive pp -> W + X -> ev + X production at root s = 7 TeV is presented based on data recorded by the CMS detector at the LHC and corresponding to an integrated luminosity of 840 pb(-1). The electron charge asymmetry reflects the unequal production of W+ and W- bosons in pp collisions. The electron charge asymmetry is measured in bins of the absolute value of electron pseudorapidity in the range of vertical bar eta vertical bar < 2.4. The asymmetry rises from about 0.1 to 0.2 as a function of the pseudorapidity and is measured with a relative precision better than 7%. This measurement provides new stringent constraints for parton distribution functions.

Item Type: Article
Uncontrolled Keywords: parton distributions; lhc
Subjects: NATURAL SCIENCES > Physics
Divisions: Division of Experimental Physics
Projects:
Project titleProject leaderProject codeProject type
Eksperimentalna fizika na LHC energijama[93132] Krešo Kadija098-0982887-2878MZOS
Depositing User: Krešo Kadija
Date Deposited: 13 Sep 2013 09:01
Last Modified: 03 Feb 2016 14:59
URI: http://fulir.irb.hr/id/eprint/606
DOI: 10.1103/PhysRevLett.109.111806

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