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Measurement of the charge asymmetry of electrons from the decays of $W$ bosons produced in $p\barp$ collisions at $\sqrts=1.96$ TeVстатья
- Авторы: Aaltonen T.A., Горелов И.В., CDF Collaboration
- Журнал: Physical Revew D
- Том: 104
- Номер: 9
- Год издания: 2021
- Первая страница: 092002
- DOI: 10.1103/PhysRevD.104.092002
- Аннотация: At the Fermilab Tevatron proton-antiproton (p anti-p) collider, high-mass electron-neutrino (e nu_e) pairs are produced predominantly in the process p anti-p --> W(-->e nu_e)+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 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.
- Добавил в систему: Горелов Игорь Владимирович