Angular Distributions of ψ Radiative Decays

Sayipjamal Dulat; ZOU Bing-Song; WU Ji-Min

Chinese Physics C> 2004, Vol. 28> Issue(4) : 350-358

Angular Distributions of ψ Radiative Decays

CCAST World Laboratory,Beijing 100080,China2 Institute of High Energy Physics,CAS,Beijing 100039,China3 Department of Physics,Xinjiang University,Urumqi 830046,China

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Abstract：
J/ψ and ψ′ radiative decays to mesons are a good place to look for glueballs, hybrids and for extracting gg-q couplings. Abundant J/ψ and ψ′ events have been collected at the Beijing Electron Positron Collider (BEPC). More data will be collected at upgraded BEPC and CLEO-c. Here we first provide explicit formulae for the angular distribution of photon of the ψ radiative decays in the covariant tensor formalism. Then we discuss helicity formalism of the angular distribution of the ψ radiative decays to two pseudoscalar mesons, and its relation to the covariant tensor formalism.

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Sayipjamal Dulat, ZOU Bing-Song, WU Ji-Min and Angular Distributions of ψ Radiative Decays[J]. Chinese Physics C, 2004, 28(4): 350-358.

Sayipjamal Dulat, ZOU Bing-Song, WU Ji-Min and Angular Distributions of ψ Radiative Decays[J]. Chinese Physics C, 2004, 28(4): 350-358. shu

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Received: 2003-08-20
Revised: 1900-01-01

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