Zhou, GL (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China.
文章类型:
Article
英文摘要:
An alternative proof of factorization theorem for Drell-Yan process that works at operator level is presented in this paper. Contributions of interactions after the hard collision for such inclusive processes are proved to be canceled at operator level according to the unitarity of time evolution operator. After this cancellation, there are no longer leading pinch singular surface in Glauber region in the time evolution of electromagnetic currents. Effects of soft gluons are absorbed into Wilson lines of scalar-polarized gluons. Cancelation of soft gluons is attribute to unitarity of time evolution operator and such Wilson lines.
类目[WOS]:
Physics, Multidisciplinary
关键词[WOS]:
HADRON-HADRON SCATTERING
; VACUUM POLARIZATION DIAGRAMS
; LEPTON-PAIR PRODUCTION
; HARD QCD PROCESSES
; CROSS-SECTION
; PERTURBATION-THEORY
; MASS SINGULARITIES
; ANNIHILATION PROCESSES
; INELASTIC-SCATTERING
; PARTON DISTRIBUTION
