Relativistic Effects in Two-Photon Decay of Quarkonium

ZHOU Hai-Qing; ZOU Bing-Song

Chinese Physics C> 2005, Vol. 29> Issue(6) : 555-560

Relativistic Effects in Two-Photon Decay of Quarkonium

ZHOU Hai-Qing ^, ,
ZOU Bing-Song

Institute of High Energy Physics,CAS,Beijing 100049,China2 Institute of Theoretical Physics,CAS,Beijing 100080,China

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Abstract：
Relativistic effects in two-photon decay of quarkonium are investigated with a relativistic phenomenological approach.Compared with the NR approximation usually used, the relativistic phenomenological approach gives corrections coming from three sources: qq relative momentum distribution,qq relative energy distribution and description of quark spinors in the meson. These relativistic effects are studied in detail for cc and ss systems.

References

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ZHOU Hai-Qing and ZOU Bing-Song. Relativistic Effects in Two-Photon Decay of Quarkonium[J]. Chinese Physics C, 2005, 29(6): 555-560.

ZHOU Hai-Qing and ZOU Bing-Song. Relativistic Effects in Two-Photon Decay of Quarkonium[J]. Chinese Physics C, 2005, 29(6): 555-560. shu

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Received: 2004-11-16
Revised: 1900-01-01

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