Color-singlet and color-octet J/psi production in top quark rare decays

Details Color-singlet and color-octet J/psi production in top quark rare decays Color-singlet and color-octet J/psi production in top quark rare decays

1997-09-19

arxiv.org/abs/hep-ph/9709400v1

Phys.Rev. D57 (1998) 610-613

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, RevTex, 4 postscript figures. To appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.57.610

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.

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