Direct Measurement of the W Production Charge Asymmetry in pp Collisions at root s=1.96 TeV

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doi:10.1103/PhysRevLett.102.181801

We present the first direct measurement of the W production charge asymmetry as a function of the W boson rapidity y(W) in pp collisions at root s=1.96 TeV. We use a sample of W -> e nu events in data from 1 fb(-1) of integrated luminosity collected using the CDF II detector. In the region |y(W)|< 3.0, this measurement is capable of constraining the ratio of up- and down-quark momentum distributions in the proton more directly than in previous measurements of the asymmetry that are functions of the charged-lepton pseudorapidity. RI Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; Prokoshin, Fedor/E-2795-2012

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11695/4203

Digital Object Identifier (DOI):	10.1103/PhysRevLett.102.181801
Codice identificativo ISI:	WOS:000265948600014
Handle:	http://hdl.handle.net/11695/4203
Appare nelle tipologie:	1.1 Articolo in rivista

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