Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10725860 | Physics Letters B | 2009 | 4 Pages |
Abstract
Two-photon annihilation rates of 2+ tensor charmonium and bottomonium up to third radial excited states are estimated in the relativistic Salpeter method. Full Salpeter equation for 2+ tensor state is solved with a well defined relativistic wave function and we calculated the annihilation amplitude using the Mandelstam formalism. Our estimates of the decay widths are: Î(Ïc2â2γ)=501 eV, Î(Ïc2â²â2γ)=534 eV, Î(Ïb2â2γ)=7.4 eV and Î(Ïb2â²â2γ)=7.7 eV. We also give total decay widths of the lowest states estimated by the two-gluon decay rates, and the results are: Îtot(Ïc2)=2.64 MeV, Îtot(Ïb2)=0.220 MeV and Îtot(Ïb2â²)=0.248 MeV.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Guo-Li Wang,