Non-relativistic pair annihilation of nearly mass degenerate neutralinos and charginos I. General framework and S-wave annihilation
Non-relativistic pair annihilation of nearly mass degenerate neutralinos and charginos I. General framework and S-wave annihilation
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DOI：
10.1007/jhep03(2013)148
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发表时间：
2012-10
影响因子：
5.4
通讯作者：
M. Beneke;M. Beneke;C. Hellmann;C. Hellmann;P. Ruiz-Femeńıa;P. Ruiz-Femeńıa
中科院分区：
文献类型：
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作者：
M. Beneke;M. Beneke;C. Hellmann;C. Hellmann;P. Ruiz-Femeńıa;P. Ruiz-Femeńıa
在一般的MSSM中，我们解析地计算了一组非相对论性中性和Chargino两粒子态的树级湮没速率，包括以前未知的非对角线速率。这些结果是计算MSSM中Sommerfeld增强的先决条件，这将在后续工作中提出。对于大量排他的两粒子末态，它们也可以用来获得MSSM暗物质对在本宇宙中湮灭的简明解析表达式。
We compute analytically the tree-level annihilation rates of a collection of non-relativistic neutralino and chargino two-particle states in the general MSSM, including the previously unknown off-diagonal rates. The results are prerequisites to the calculation of the Sommerfeld enhancement in the MSSM, which will be presented in subsequent work. They can also be used to obtain concise analytic expressions for MSSM dark matter pair annihilation in the present Universe for a large number of exclusive two-particle final states.