Measurement of the electron charge asymmetry in inclusive w production in pp collisions at root s=7 TeV
Type :
Article
Publication Status :
published
Access :
restrictedAccess
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.
Source :
Physical Review Letters
Date :
2012-09-14
Volume :
109
Issue :
11
Publisher :
American Physical Society
URI
http://hdl.handle.net/10679/638http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.109.111806
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