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arXiv 1003.1182hep-ph
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$D$波重介子的强衰变和电磁衰变

Strong and Electromagnetic Decays of The $D$-wave Heavy Mesons

Peng-Zhi Huang, Liang Zhang, Shi-Lin Zhu

摘要:

在重夸克有效理论的首阶光锥QCD求和规则的框架下,计算了重介子二重态$(1^-,2^-)$与(0^-,1 ^-)/(0^+,1 ^+)之间的$π$、$ρ$、$ω$和$γ$耦合常数.大多数求和规则随Borel参数和连续阈值的变化是稳定的。然后计算了$(1^-,2^-)$ D波重介子的强衰变宽度和电磁衰变宽度。它们的总宽度在几十MeV左右,这对未来的实验研究有帮助。

英文摘要:

We calculate the $π$, $ρ$, $ω$, and $γ$ coupling constants between the heavy meson doublets $(1^-,2^-)$ and (0^-,1^-)/(0^+,1^+) within the framework of the light-cone QCD sum rule at the leading order of heavy quark effective theory. Most of the sum rules are stable with the variations of the Borel parameter and the continuum threshold. Then we calculate the strong and electromagnetic decay widths of the $(1^-,2^-)$ D-wave heavy mesons. Their total widths are around several tens of MeV, which is helpful in the future experimental search.

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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