Measurement of the Electron Charge Asymmetry in Inclusive W Production in pp Collisions at √s=7 TeV
Name
Chatrchyan-2012-Measurement of the Electron Charge Asymmetry in Inclusive W Production.pdf
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Author(s)
Bauer, Gerry P.
Bendavid, Joshua L.
Busza, Wit
Butz, Erik M.
Cali, Ivan Amos
Chan, M.
Dutta, V.
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Hahn, Kristian Allan
Date Issued
September 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Chatrchyan, S. et al. “Measurement of the Electron Charge Asymmetry in Inclusive W Production in Pp Collisions at Sqrt[s]=7 TeV.” Physical Review Letters 109.11 (2012).
Version
Final published version
Abstract
A measurement of the electron charge asymmetry in inclusive pp→W+X→eν+X production at √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[superscript -1]. The electron charge asymmetry reflects the unequal production of W[superscript +] and W[superscript -] bosons in pp collisions. The electron charge asymmetry is measured in bins of the absolute value of electron pseudorapidity in the range of |η|<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.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.109.111806
