Annihilation rates of heavy 1(--) S-wave quarkonia in Salpeter method

作者：Fu Hui feng; Chen Xiang jun; Wang Guo Li^*

来源：Physics Letters B, 2010, 692(5): 312-316.

DOI：10.1016/j.physletb.2010.07.050

• Salpeter
• Relativistic
• Quarkium
• Annihilation

Annihilation rates of vector 1(--) charmonium and bottomonium (3) S-1 states V -> e(+)e(-) and V -> 3 gamma, V -> gamma gg and V -> 3g are estimated in the relativistic Salpeter method. In our calculations, special attention is paid to the relativistic correction, which is important and cannot be ignored for excited 2S, 3S and higher excited states. We obtain Gamma(J/psi -> 3 gamma) = 6.8 x 10(-4) keV, Gamma (psi(2S) -> 3 gamma) = 2.5 x 10(-4) keV, Gamma (psi(3S) -> 3 gamma) = 1.7 x 10(-4) keV, Gamma(gamma(1S) -> 3 gamma) = 1.5 x 10(-5) keV, Gamma(gamma(2S) -> 3 gamma) = 5.7 x 10(-6) keV, Gamma(gamma(3S) -> 3 gamma) = 3.5 x 10(-6) keV and Gamma(gamma(4S) -> 3 gamma) = 2.6 x 10(-6) keV.

• 出版日期2010-9-13
• 单位哈尔滨工业大学