Abstract
This Letter reports a measurement of the muon charge asymmetry from W bosons produced in proton- proton collisions at a centre-of-mass energy of 7 TeV with the ATLAS experiment at the LHC. The asymmetry is measured in the W →µν decay mode as a function of the muon pseudorapidity using a data sample corresponding to a total integrated luminosity of 31 pb-1. The results are compared to predictions based on next-to-leading order calculations with various parton distribution functions. This measurement provides information on the u and d quark momentum fractions in the proton.
Original language | English |
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Pages (from-to) | 31-49 |
Number of pages | 19 |
Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volume | 701 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan 1 2011 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics