At the Fermilab Tevatron proton-antiproton (p (p) over bar) collider, high-mass electron-neutrino (e nu) pairs are produced predominantly in the process p (p) over bar -> W(-> e nu) + 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 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, J.A., Arisawa, T., Artikov, A., Asaadi, J., Ashmanskas, W., Auerbach, B., Aurisano, A., Azfar, F., Badgett, W., Bae, T., Barbaro-Galtieri, A., Barnes, V.E., Barnett, B.A., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - ELETTRONICO. - 104:(2021), pp. 0-0. [10.1103/PhysRevD.104.092002]

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

Latino, G;
2021

Abstract

At the Fermilab Tevatron proton-antiproton (p (p) over bar) collider, high-mass electron-neutrino (e nu) pairs are produced predominantly in the process p (p) over bar -> W(-> e nu) + 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.
2021
104
0
0
Aaltonen, T; Amerio, S; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, JA; Arisawa, T; Artikov, A; Asaadi, J; Ashmanskas, W; Aue...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1311569
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