EXCLUSIVE QCD PREDICTIONS FOR PROTON-ANTIPROTON DECAY-RATES OF 3D1-STATES CHARMONIUM STATES

被引：5
|
作者：
ROBINETT, RW
WEINKAUF, L
机构：
[1] Department of Physics, Pennsylvania State University, University Park
来源：
PHYSICS LETTERS B | 1991年 / 271卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0370-2693(91)91305-F
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Using familiar methods of exclusive QCD, we derive the amplitude for the coupling of J = 1 quarkonium D-states to proton-antiproton pairs. Including the D-3(1) contribution, we then evaluate the psi' --> ppBAR decay width and find that the \2 S-3-(1)> - \1 D-3(1)> mixing angle solution-phi = - (28 +/- 2)-degrees is favored by the observed-psi' decay rate. Using this solution, we then find that GAMMA(psi" --> ppBAR)/GAMMA(psi --> ppBAR) is in the range 0.07-0.31 depending on the assumed nucleon wavefunction.
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页码：231 / 236
页数：6
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