Higher Fock-state contributions to the generalized parton distribution of pion
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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Generalized parton distributions provide a unified parameterization of hadron structure and allow one to combine information from many different observables. Lattice QCD calculations already provide important input to determine these distributions and hold the promise to become even more important in the future. To this end, a reliable extrapolation of lattice calculations to the physical quark...
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We present a phenomenological analysis of higher Fack state contributions to the χcJ decays by using the recent BES experimental data. It is found that the higher Fock state | (cc̄)8g > makes an important contributions to the inclusive and exclusive processes with respect to that from the valence Fock state | cc̄ > of the χcJ and some constraints of these contributions are obtained for the χc0 an...
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The basic properties of generalized parton distributions (GPDs) and some recent applications of GPDs are discussed. Talk given at the Workshop “Continuous Advances in QCD 2004”, Minneapolis, May 13-16, 2004 Also at Laboratory of Theoretical Physics,JINR, Dubna, Russia
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2006
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.73.114013