Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10721913 | Physics Letters B | 2011 | 4 Pages |
Abstract
We have generalized the approach of Brodsky et al. for the intrinsic charm quark distribution in the nucleons to the light-quark sector involving intrinsic u¯,d¯,s and s¯ sea quarks. We compare the calculations with the existing d¯âu¯, s+s¯, and u¯+d¯âsâs¯ data. The good agreement between the theory and the data allows the extraction of the probabilities for the |uuduu¯ã, |uuddd¯ã, and |uudss¯ã five-quark Fock states in the proton. We also calculate the x-dependence of the intrinsic charm after taking into consideration the QCD evolution of the intrinsic quark distribution.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Wen-Chen Chang, Jen-Chieh Peng,