(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 | ||||||||
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| Uncontrolled Keywords: | parton distributions; lhc | ||||||||
| Subjects: | NATURAL SCIENCES > Physics | ||||||||
| Divisions: | Division of Experimental Physics | ||||||||
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| Depositing User: | Krešo Kadija | ||||||||
| Date Deposited: | 13 Sep 2013 09:01 | ||||||||
| URI: | http://fulir.irb.hr/id/eprint/606 | ||||||||
| DOI: | 10.1103/PhysRevLett.109.111806 |
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