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arXiv 0901.3917hep-ph
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等质量重夸克偶素的\ga \ga和g g衰变率

\ga\ga and g g decay rates for equal mass heavy quarkonia

James T. Laverty, Stanley F. Radford, Wayne W. Repko

摘要:

本文计算了粲偶素和uppermite系统的等质量夸克偶素态$^1S_0$、$^3P_0$和$^3P_2$的双光子和双胶子宽度。所采取的方法是基于使用完整的相对论性$q\bar{q}\to\ga\ga$振幅连同从瞬时Bethe-Salpeter方程导出的波函数。动量空间的径向波函数从较早的适合的粲偶素和uppermum光谱获得的用于评估必要的积分。

英文摘要:

We present a calculation of the two-photon and two-gluon widths for the equal mass quarkonium states $^1S_0$, $^3P_0$ and $^3P_2$ of the charmonium and upsilon systems. The approach taken is based on using the full relativistic $q\bar{q}\to\ga\ga$ amplitude together with a wave function derived from the instantaneous Bethe-Salpeter equation. Momentum space radial wave functions obtained from an earlier fit of the charmonium and upsilon spectra are used to evaluate the necessary integrals.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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