arXiv:hep-ph/9709400·v1·High Energy Physics — Phenomenology
Color-singlet and color-octet J/psi production in top quark rare decays
Feng Yuan🇨🇳 · Cong-Feng Qiao🇨🇳 · Kuang-Ta Chao🇨🇳
Abstract
J/psi production in top quark rare decays is investigated under the framework of NRQCD factorization formalism. Various production channels are studied, and we find that the contributions from the color-singlet quark fragmentation and the color-octet gluon fragmentation are both over 3 orders larger than that from the leading order color-singlet process. The numerical results show that the branching ratio B(t -> c + J/psi + X) is about 10^{-14} in the SM, and 10^{-10} in the MSSM.
Comments: 10 pages, RevTex, 4 postscript figures. To appear in Phys. Rev. D