Modelling distribution functions and fragmentation functions
نویسندگان
چکیده
We present examples for the calculation of the distribution and fragmentation functions using the representation in terms of non-local matrix elements of quark field operators. As specific examples, we use a simple spectator model to estimate the leading twist quark distribution functions and the fragmentation functions for a quark into a nucleon or a pion.
منابع مشابه
Modelling quark distribution and fragmentation functions
The representation of quark distribution and fragmentation functions in terms of nonlocal operators is combined with a simple spectator model. This allows us to estimate these functions for the nucleon and the pion ensuring correct crossing and support properties. We give estimates for the unpolarized functions as well as for the polarized ones and for subleading (higher twist) functions. Furth...
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