Aaltonen, T;
Adelman, J;
Akimoto, T;
Alvarez Gonzalez, B;
Amerio, S;
Amidei, D;
Anastassov, A;
... Zucchelli, S; + view all
(2009)
Direct Measurement of the W Production Charge Asymmetry in pp Collisions at root s=1.96 TeV.
Physical Review Letters
, 102
(18)
, Article 181801. 10.1103/PhysRevLett.102.181801.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | Direct Measurement of the W Production Charge Asymmetry in pp Collisions at root s=1.96 TeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.102.181801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.102.181801 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | PARTON DISTRIBUTIONS, ELECTROMAGNETIC CALORIMETER, P(P)OVER-BAR COLLISIONS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/143137 |
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