Investigation on Virtual State Contribution to Gauge Invariant Cross Section of e+e-→J/ψ+ηc in Bethe-Salpeter Framework

Abstract

It is shown that the virtual states and relative momentum of the constituents of the bound states are very important for the cross section of the process e+e-→J/ψ+ηc with the help of the Bethe-Salpeter wave function description of the bound states. The gauge invariance of the cross section is demonstrated. The numerical results can explain the experimental data.

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Bhatnagar, S. , Li, M. and Li, S. (2014) Investigation on Virtual State Contribution to Gauge Invariant Cross Section of e+e-→J/ψ+ηc in Bethe-Salpeter Framework. Journal of Modern Physics, 5, 1027-1035. doi: 10.4236/jmp.2014.511104.

Conflicts of Interest

The authors declare no conflicts of interest.

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