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arXiv 0910.0453hep-ph
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不稳定粒子模型中的因式分解效应

Factorization effects in a model of unstable particles

V. I. Kuksa, N. I. Volchanskiy

摘要:

因子分解的影响被认为是在框架内的不稳定粒子与涂抹质量的模型。结果表明,任意自旋的不稳定粒子在中间态的两粒子截面和三粒子衰变宽度可用普适因式分解公式描述。精确因式分解是由模型不稳定粒子传播子的特殊结构引起的。这一结果被推广到复杂的散射和衰变链过程中的不稳定粒子的中间状态。我们分析了该方法的适用性,并评估其准确性。

英文摘要:

The effects of factorization are considered within the framework of the model of unstable particles with a smeared mass. It is shown that two-particle cross section and three-particle decay width can be described by the universal factorized formulae for an unstable particles of an arbitrary spin in an intermediate state. The exact factorization is caused by the specific structure of the model unstable-particle propagators. This result is generalized to complicated scattering and decay-chain processes with unstable particles in intermediate states. We analyze applicability of the method and evaluate its accuracy.

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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