کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1839549 1527242 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Generalized parton distributions in a meson cloud model
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Generalized parton distributions in a meson cloud model
چکیده انگلیسی

We present a model calculation of the generalized parton distributions where the nucleon is described by a quark core surrounded by a mesonic cloud. In the one-meson approximation, we expand the Fock state of the physical nucleon in a series involving a bare nucleon and two-particle, meson-baryon, states. We discuss the role of the different Fock-state components of the nucleon by deriving a convolution formalism for the unpolarized generalized parton distributions, and showing predictions at different kinematics.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics A - Volume 782, Issues 1–4, 1 February 2007, Pages 86-92