TY - JOUR
T1 - Extraction of various five-quark components of the nucleons
AU - Chang, Wen Chen
AU - Peng, Jen Chieh
N1 - Funding Information:
We acknowledge helpful discussion with Stan Brodsky, Gerry Garvey, Don Geesaman, Bo-Qiang Ma, Tony Thomas, and Fan Wang. This work was supported in part by the National Science Council of the Republic of China and the U.S. National Science Foundation . One of the authors (J.P.) thanks the members of the Institute of Physics, Academia Sinica for their hospitality.
PY - 2011/10/13
Y1 - 2011/10/13
N2 - 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--u-, s+s-, and u-+d--s-s- data. The good agreement between the theory and the data allows the extraction of the probabilities for the |uuduu-〉, |uuddd-〉, and |uudss-〉 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.
AB - 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--u-, s+s-, and u-+d--s-s- data. The good agreement between the theory and the data allows the extraction of the probabilities for the |uuduu-〉, |uuddd-〉, and |uudss-〉 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.
KW - Five-quark states
KW - Intrinsic sea quark
KW - Nucleon structure
UR - http://www.scopus.com/inward/record.url?scp=80053131955&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80053131955&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2011.08.077
DO - 10.1016/j.physletb.2011.08.077
M3 - Article
AN - SCOPUS:80053131955
SN - 0370-2693
VL - 704
SP - 197
EP - 200
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 3
ER -