2017/07/17 by Xiaoyu Wang, Zhun Lu, Ivan Schmidt · 24 citations
Physics and Astronomy · #Drell–Yan process #Factorization #Formalism (music) #High-Energy Particle Collisions Research #Momentum (technical analysis) #Particle physics theoretical and experimental studies #Pion #Quantum Chromodynamics and Particle Interactions #Scattering cross-section #Spectrum (functional analysis) #Transverse plane #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep08(2017)137
published in Journal of High Energy Physics 2017(8) (Springer Nature) · 17 pages, 3 figures
arxiv created 2017/07/17 · openalex created_date 2017/07/31 · openalex publication_date 2017/08/01 · arxiv updated 2017/09/20 · openalex updated_date 2026/08/05
We study the transverse momentum spectrum of dilepton produced in the unpolarized π− N Drell-Yan process, using transverse momentum dependent factorization up to next-to-logarithmic order of QCD. We extract the nonperturbative Sudakov form factor for the pion in the evolution formalism of the unpolarized TMD distribution function, by fitting the experimental data collected by the E615 Collaboration at Fermilab. With the extracted Sudakov factor, we calculate the normalized differential cross section with respect to transverse momentum of the dimuon and compare it with the recent measurement by the COMPASS Collaboration.