Nguyen, T (reprint author), Kent State Univ, Dept Phys, Ctr Nucl Res, Kent, OH 44242 USA.
部门归属:
[Trang Nguyen] Kent State Univ, Dept Phys, Ctr Nucl Res, Kent, OH 44242 USA; [Bashir, Adnan] Univ Michoacana, Inst Fis & Matemat, Morelia 58040, Michoacan, Mexico; [Bashir, Adnan; Roberts, Craig D.; Tandy, Peter C.] CAS, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Roberts, Craig D.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA; [Roberts, Craig D.] Peking Univ, Dept Phys, Ctr High Energy Phys, Beijing 100871, Peoples R China; [Roberts, Craig D.] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
英文摘要:
A rainbow-ladder truncation of QCD's Dyson-Schwinger equations, constrained by existing applications to hadron physics, is employed to compute the valence-quark parton distribution functions of the pion and kaon. Comparison is made to pi-N Drell-Yan data for the pion's u-quark distribution and to Drell-Yan data for the ratio u(K)(x)/u(pi)(x): the environmental influence of this quantity is a parameter-free prediction, which agrees well with existing data. Our analysis unifies the computation of distribution functions with that of numerous other properties of pseudoscalar mesons.
