کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1837431 1527184 2009 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cronin effect for protons and pions in high-energy pA collisions
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Cronin effect for protons and pions in high-energy pA collisions
چکیده انگلیسی

Pions and protons production cross sections are analyzed in proton–proton and proton–nucleus collisions at the RHIC energy at midrapidity. We employ the pQCD factorization scheme supplemented with the color-dipole formalism to investigate the Cronin effect. We calculate the broadening in the color-dipole approach for different centralities. Our main goal is to investigate, in a parameter-free manner within a unified framework, how much of the cronin effect for both pions and baryons comes from the transverse momentum broadening due to initial partons multi-scatterings. We conclude that final-state effects in pA collisions are important. Uncertainties in nuclear shadowing of various parton distributions and parton fragmentation functions are also discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics A - Volume 826, Issues 1–2, 15 July 2009, Pages 198-210