Heavy quarkonium production through the top quark rare decays via the channels involving flavor changing neutral currents

Abstract

In the paper, we discuss the possibility of observation of heavy quarkoniums via the processes involving flavor changing neutral currents (FCNC). More explicitly, we systematically calculate the production of heavy charmonium and (cb)-quarkonium through the top quark semiexclusive rare FCNC decays in the framework of the nonrelativistic QCD (NRQCD) factorization theory. Our results show that the total decay widths t→η c = 1.20 GeV, where the uncertainties are from variation of quark masses and renormalization scales. Even though the decay widths are small, it is important to make a systematic study on the production of charmonium and (cb)-quarkonium through the top-quark decays via FCNC in the Standard Model, which will provide useful guidance for future new physics research from the heavy quarkonium involved processes.

Bound State of Heavy Quarks Using a General Polynomial Potential

“…We found that our work gives better results in comparison with experimental data. In [20,21,28,29], the authors used the same method and the same potential when = 0. We noticed that our work is in better agreement with the experimental data.…”