2018/07/31 by Alessandro Bacchetta, Giuseppe Bozzi, Marco Radici +2
Physics and Astronomy · #Boson #Electron #Factorization #Flavor #Hadron #High-Energy Particle Collisions Research #Lepton #Momentum (technical analysis) #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Proton #Quantum Chromodynamics and Particle Interactions #Quark #Transverse plane #hep-ex #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1016/j.physletb.2018.11.002
5 pages, 2 tables; revised version with new results with more statistics, more comments, conclusions unchanged, added one reference
openalex created_date 2018/07/10 · arxiv created 2018/08/03 · openalex publication_date 2018/11/05 · arxiv updated 2018/11/07 · openalex updated_date 2026/08/05
Within the framework of transverse-momentum-dependent factorization, we investigate for the first time the impact of a flavor-dependent intrinsic transverse momentum of quarks on the production of W± bosons in proton–proton collisions at s=7TeV. We estimate the shift in the extracted value of the W boson mass MW induced by different choices of flavor-dependent parameters for the intrinsic quark transverse momentum by means of a template fit to the transverse-mass and the lepton transverse-momentum distributions of the W-decay products. We obtain −6≤ΔMW+≤9MeV and −4≤ΔMW−≤3 MeV with a statistical uncertainty of ±2.5 MeV. Our findings call for more detailed investigations of flavor-dependent nonperturbative effects linked to the proton structure at hadron colliders.