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Measurement of forward W arrow right e nu production in pp collisions at ... TeV
Ist Teil von
The journal of high energy physics, 2016-10, Vol.2016 (10), p.1-29
Erscheinungsjahr
2016
Link zum Volltext
Quelle
Free E-Journal (出版社公開部分のみ）
Beschreibungen/Notizen
(ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image).A measurement of the cross-section for W arrow right e nu production in pp collisions is presented using data corresponding to an integrated luminosity of 2 fb super(-1) collected by the LHCb experiment at a centre-of-mass energy of ... TeV. The electrons are required to have more than 20 GeV of transverse momentum and to lie between 2.00 and 4.25 in pseudorapidity. The inclusive W production cross-sections, where the W decays to e nu , are measured to be ... ... ... ... where the first uncertainties are statistical, the second are systematic, the third are due to the knowledge of the LHC beam energy and the fourth are due to the luminosity determination. Differential cross-sections as a function of the electron pseudorapidity are measured. The W super(+) /W super(-) cross-section ratio and production charge asymmetry are also reported. Results are compared with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics. Finally, in a precise test of lepton universality, the ratio of W boson branching fractions is determined to be ... ... where the first uncertainty is statistical and the second is systematic. [Figure not available: see fulltext.]