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

0552636 - FZÚ 2022 RIV US eng J - Článek v odborném periodiku
Aaltonen, T. - Amerio, S. - Amidei, D. - Lysák, Roman … celkem 400 autorů
Measurement of the charge asymmetry of electrons from the decays of W bosons produced in p p ¯ collisions at √s =1.96 TeV.
Physical Review D. Roč. 104, č. 9 (2021), č. článku 092002. ISSN 2470-0010. E-ISSN 2470-0029
Institucionální podpora: RVO:68378271
Klíčová slova: Batavia TEVATRON Coll * slope * CDF
Obor OECD: Particles and field physics
Impakt faktor: 5.407, rok: 2021
Způsob publikování: Open access

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.
Trvalý link: http://hdl.handle.net/11104/0327750