Compact Muon Solenoid
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| CMS-SMP-12-001 ; CERN-PH-EP-2012-151 | ||
| Measurement of the electron charge asymmetry in inclusive W production in pp collisions at $\sqrt{s}$ = 7 TeV | ||
| CMS Collaboration | ||
| 12 June 2012 | ||
| Phys. Rev. Lett. 109 (2012) 111806 | ||
| Abstract: A measurement of the electron charge asymmetry in inclusive $pp \to W + X \to e\nu + X$ production at $\sqrt{s}$ =7 TeV is presented based on data recorded by the CMS detector at the LHC and corresponding to an integrated luminosity of 840 invere picobarns. The electron charge asymmetry reflects the unequal production of positive and negative W bosons in pp collisions. The electron charge asymmetry is measured in bins of absolute value of electron pseudorapidity in the range of abs(eta) < 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. | ||
| Links: e-print arXiv:1206.2598 [hep-ex] (PDF) ; CDS record ; inSPIRE record ; Public twiki page ; HepData record ; CADI line (restricted) ; | ||
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Compact Muon Solenoid LHC, CERN |
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