Features of W production in p-p, p-Pb and Pb-Pb collisions

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Arleo , F , Chapon , É & Paukkunen , H 2017 , ' Features of W production in p-p, p-Pb and Pb-Pb collisions ' , PoS Proceedings of Science , vol. 297 , 006 . < https://pos.sissa.it/297/ >

Title: Features of W production in p-p, p-Pb and Pb-Pb collisions
Author: Arleo, François; Chapon, Émilien; Paukkunen, H.
Contributor: University of Helsinki, Helsinki Institute of Physics
Date: 2017
Language: eng
Number of pages: 4
Belongs to series: PoS Proceedings of Science
ISSN: 1824-8039
URI: http://hdl.handle.net/10138/299545
Abstract: We consider the production of inclusive W bosons in variety of high-energy hadronic collisions: p-p, p-p, p-Pb, and Pb-Pb. In particular, we focus on the resulting distributions of charged leptons from W decay that can be measured with relatively low backgrounds. The leading-order expressions within the collinearly factorized QCD indicate that the center-of-mass energy dependence at forward/backward rapidities should be well approximated by a simple power law. The scaling exponent is related to the small-x behaviour of the quark distributions, which is largely driven by the parton evolution. An interesting consequence is the simple scaling law for the lepton charge asymmetry which relates measurements in different collision systems. The expectations are contrasted with the existing data and a very good overall agreement is found. Finally, we propose precision observables to be measured at the LHC. © 2017 Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).
Subject: Binary alloys
Elementary particles
High energy physics
Inelastic scattering
Lead, Center-of-mass energies
Charge asymmetries
Charged leptons
Collision systems
Hadronic collisions
Leading orders
Pb-Pb collisions
Scaling exponent, Lead alloys
114 Physical sciences

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