Measurement of the electron charge asymmetry in pp¯→W+X→eν+X decays in pp¯ collisions at √s = 1.96 TeV

0455630 - FZÚ 2016 RIV US eng J - Článek v odborném periodiku
Abazov, V. M. - Abbott, B. - Acharya, B.S. - Kupčo, Alexander - Lokajíček, Miloš … celkem 364 autorů
Measurement of the electron charge asymmetry in pp¯→W+X→eν+X decays in pp¯ collisions at √s = 1.96 TeV.
Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 91, č. 3 (2015), "032007-1"-"032007-26". ISSN 1550-7998
Institucionální podpora: RVO:68378271
Klíčová slova: D0 * quantum chromodynamics * Batavia TEVATRON Coll * p anti-p --> W * W --> electron neutrino * 1960 GeV-cms
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 4.506, rok: 2015

We present a measurement of the electron charge asymmetry in pp¯→W+X→eν+X events at a center-of-mass energy of 1.96 TeV, using data corresponding to 9.7  fb−1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron Collider. The asymmetry is measured as a function of the electron pseudorapidity and is presented in five kinematic bins based on the electron transverse energy and the missing transverse energy in the event. The measured asymmetry is compared with next-to-leading-order predictions in perturbative quantum chromodynamics and provides accurate information for the determination of parton distribution functions of the proton. This is the most precise lepton charge asymmetry measurement to date.
Trvalý link: http://hdl.handle.net/11104/0256257