At the Fermilab Tevatron proton-antiproton (p¯p) collider, high-mass electron-neutrino (eν) pairs are produced predominantly in the process p¯p→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.

Measurement of the charge asymmetry of electrons from the decays of W bosons produced in pp¯ collisions at s=1.96  TeV

Cauz, D.;Manca, G.;Santi, L.;
2021-01-01

Abstract

At the Fermilab Tevatron proton-antiproton (p¯p) collider, high-mass electron-neutrino (eν) pairs are produced predominantly in the process p¯p→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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11390/1213750
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