接近值的P波索默菲尔德增强:一种简化的方法
Carlos H de Lima1, Alberto Tonero1, Andres Vasquez2,3
1Ottawa-Carleton Institute for Physics, Carleton University, Ottawa, ON K1S 5B6 Canada.
The European physical journal. C, Particles and fields
|October 23, 2023
概括
计算不稳定的粒子的P波索默菲尔德增强是分歧的. 本研究提出了一种使用狭宽近似的简化方法,以获得对共振贡献的有限结果,类似于S波计算.
科学领域:
- 高能物理 高能物理
- 量子场理论 量子场理论
- 粒子物理学 粒子物理学
背景情况:
- 对于不稳定的最终状态粒子的P波索默菲尔德增强计算通常会导致分歧.
- 包括共振和非共振贡献在内的完整计算产生有限的结果,但通常无法用于超越标准模型应用.
研究的目的:
- 开发一个简化的处方来计算P波索默菲尔德增强在接近值区域.
- 通过专注于不稳定的粒子的共振贡献来解决分歧的问题.
主要方法:
- 对于不稳定的粒子,利用狭宽近似方法.
- 开发一种方法,直接消除共振贡献计算中的差异.
主要成果:
- 已经建立了对P波索默菲尔德增强共振贡献的有限处方.
- 有限共振贡献可以在不包括非共振过程的情况下定义.
结论:
- 简化方法提供了一种有限且实用的方法,用于在特定的近似中计算P波索默菲尔德增强对于不稳定的粒子.
- 这项工作为超越标准模型物理学的有意义结果提供了一条途径,在那里,完全的计算是具有挑战性的.
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