Generalized parton distributions of the pion in a Bethe-Salpeter approach
نویسندگان
چکیده
منابع مشابه
Generalized parton distributions of the pion
Generalized Parton Distributions of the pion are evaluated in chiral quark models with the help of double distributions. As a result the polynomiality conditions are automatically satisfied. In addition, positivity constraints, proper normalization and support, sum rules, and soft pion theorems are fulfilled. We obtain explicit expressions holding at the low-energy quark-model scale, which exhi...
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The proper support of generalized parton distributions from relativistic constituent quark models with pointlike constituents is studied. The correct support is guaranteed when the vertex function does not depend on the relative momentum. We show that including quark interactions in models with pointlike constituent quarks might lead to a support problem.
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2005
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2005.03.070