A model for F L and R = F L / F T at low x and low Q 2
نویسندگان
چکیده
منابع مشابه
F 2 at Low Q
We analyse the data for the proton structure function F2 over the entire Q 2 domain, including especially low Q 2 , in terms of perturbative and non-perturbative QCD contributions. The small distance configurations are given by perturbative QCD, while the large distance contributions are given by the vector dominance model and, for the higher mass qq states, by the additive quark approach.
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The generalised vector meson dominance model (GVDM) gives a good description of F2 data at very low Q 2. At intermediate Q 2 a GVDM component avoids problems when applying the large-Q 2 DIS formalism, such as a negative gluon distribution in the proton. The fluctuations of the exchanged photon into vector mesons is also a natural part of a model with hadronic fluctuations of the target proton, ...
متن کاملThe description of F 2 at low Q 2
We analyse the data for the proton structure function F 2 over the entire Q 2 domain, including especially low Q 2 , in terms of perturbative and non-perturbative QCD contributions. The small distance configurations are given by perturbative QCD, while the large distance contributions are given by the vector dominance model and, for the higher mass qq states, by the additive quark approach. The...
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ژورنال
عنوان ژورنال: Zeitschrift f�r Physik C Particles and Fields
سال: 1997
ISSN: 0170-9739,1431-5858
DOI: 10.1007/s002880050391