# Measurement of the charge asymmetry of electrons from the decays of W bosons produced in p(p)over-bar collisions at root s=1.96 TeV

Aaltonen, T, Amerio, S, Amidei, D, Anastassov, A, Annovi, A, Antos, J, Apollinari, G, Appel, JA, Arisawa, T, Artikov, A
et al (show 390 more authors) (2021) Measurement of the charge asymmetry of electrons from the decays of W bosons produced in p(p)over-bar collisions at root s=1.96 TeV. PHYSICAL REVIEW D, 104 (9).

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## Abstract

At the Fermilab Tevatron proton-antiproton (pp¯) collider, high-mass electron-neutrino (eν) pairs are produced predominantly in the process pp¯→W(→eν)+X. The asymmetry of the electron and positron yield as a function of their pseudorapidity constrain the slope of the ratio of the u- to d-quark parton distributions versus the fraction of the proton momentum carried by the quarks. This paper reports on the measurement of the electron-charge asymmetry using the full data set recorded by the Collider Detector at Fermilab in 2001-2011 and corresponding to 9.1 fb-1 of integrated luminosity. The measurement significantly improves the precision of the Tevatron constraints on the parton-distribution functions of the proton. Numerical tables of the measurement are provided.

Item Type: Article Faculty of Science and Engineering > School of Physical Sciences Symplectic Admin 16 Dec 2021 13:37 18 Jan 2023 21:19 10.1103/PhysRevD.104.092002 https://journals.aps.org/prd/abstract/10.1103/Phys... https://livrepository.liverpool.ac.uk/id/eprint/3145497