Thursday, February 21, 2013

1302.5031 (Hai-Rong Dong et al.)

Some recent progress in understanding exclusive double charmonium
production at $B$ factories
   [PDF]

Hai-Rong Dong, Feng Feng, Yu Jia
We review some recent progress in understanding various exclusive double charmonium production processes at $B$ factories, within the nonrelativistic QCD factorization framework. First we investigate the impact of the joint perturbative and relativistic correction on the process that has attracted a great amount of attention in the past decade, $e^+e^-\to J/\psi+\eta_c$. We then briefly discuss the phenomenological implication of the next-to-leading order perturbative correction to the processes $e^+e^-\to J/\psi+\chi_{c0,1,2} (\eta_{c2})$. We further emphasize a novel theoretical challenge, which is recently discovered by applying the NRQCD factorization approach to the helicity-suppressed hard exclusive reactions involving heavy quarkonium.
View original: http://arxiv.org/abs/1302.5031

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