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arXiv 1509.08686hep-ph
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复质量定义与不稳定粒子传播子的结构

Complex-mass definition and the structure of unstable particle's propagator

Vladimir Kuksa

摘要:

不稳定粒子的传播子被认为是在卷积表示的框架。当标量不稳定粒子的传播子具有Breight-Wigner形式时,得到了谱函数。在这种情况下,我们用解析的方法导出了不稳定矢量场和旋量场的缀饰传播子的表达式。我们得到了修正的Breit-Wigner形式的传播子,它对应于复质量定义。

英文摘要:

The propagators of unstable particles are considered in the framework of the convolution representation. Spectral function was found for a special case when the propagator of scalar unstable particle has Breight-Wigner form. The expressions for the dressed propagators of unstable vector and spinor fields are derived in an analytical way for this case. We got the propagators in modified Breit-Wigner forms which correspond to the complex-mass definition.

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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