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Title
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Measurement of the electron charge asymmetry in inclusive W production in pp collisions at =7 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| 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. |
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Language
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English
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Source (journal)
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Physical review letters. - New York, N.Y.
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Publication
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New York, N.Y.
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2012
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ISSN
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0031-9007
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Volume/pages
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109
:11
(2012)
, 15 p.
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Article Reference
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111806
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ISI
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000308588200005
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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