TY - JOUR
T1 - Perturbative QCD analysis of exclusive J/ψ+ηc production in e+e- annihilation
AU - Choi, Ho Meoyng
AU - Ji, Chueng Ryong
PY - 2007/11/9
Y1 - 2007/11/9
N2 - We analyze the exclusive charmonium J/ψ+ηc pair production in e+e- annihilation using the nonfactorized perturbative QCD and the light-front quark model (LFQM) that goes beyond the peaking approximation. We effectively include all orders of higher twist terms in the leading order of QCD coupling constant and compare our nonfactorized analysis with the usual factorized analysis in the calculation of the cross section. We also calculate the quark distribution amplitudes, the Gegenbauer moments, and the decay constants for J/ψ and ηc mesons using our LFQM. Our nonfactorized result enhances the nonrelativistic QCD result by a factor of 3∼4 at s=10.6GeV.
AB - We analyze the exclusive charmonium J/ψ+ηc pair production in e+e- annihilation using the nonfactorized perturbative QCD and the light-front quark model (LFQM) that goes beyond the peaking approximation. We effectively include all orders of higher twist terms in the leading order of QCD coupling constant and compare our nonfactorized analysis with the usual factorized analysis in the calculation of the cross section. We also calculate the quark distribution amplitudes, the Gegenbauer moments, and the decay constants for J/ψ and ηc mesons using our LFQM. Our nonfactorized result enhances the nonrelativistic QCD result by a factor of 3∼4 at s=10.6GeV.
UR - http://www.scopus.com/inward/record.url?scp=36048960246&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.76.094010
DO - 10.1103/PhysRevD.76.094010
M3 - Article
AN - SCOPUS:36048960246
SN - 1550-7998
VL - 76
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 9
M1 - 094010
ER -