J/ψ production in top quark decays
Abstract
We calculate the direct production rate of J/ψ in top quark decays. The color-octet J/ψ production via t-->W+bJ/ψ is shown to have a large branching ratio of order 1.5×10-4, which is over an order of magnitude higher than that of the color-singlet J/ψ production via t-->W+bJ/ψgg or t-->W+bχcJg followed by χcJ-->J/ψγ. Our result can also be used as a tool to test the importance of the color-octet mechanism in heavy quarkonium production in the future.
- Publication:
-
Physical Review D
- Pub Date:
- March 1997
- DOI:
- 10.1103/PhysRevD.55.2837
- arXiv:
- arXiv:hep-ph/9606462
- Bibcode:
- 1997PhRvD..55.2837Q
- Keywords:
-
- 13.20.Jf;
- 12.39.Jh;
- Decays of other mesons;
- Nonrelativistic quark model;
- High Energy Physics - Phenomenology
- E-Print:
- 10 pages LaTex (2 figures in PS-file)