Neutralino annihilation into massive quarks with supersymmetric QCD corrections

Neutralino annihilation into massive quarks with supersymmetric QCD corrections
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通过超对称 QCD 校正中性子湮灭成大质量夸克

DOI:
10.1103/physrevd.79.061701
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发表时间:
2009
期刊:
影响因子:
5
通讯作者:
K. Kovářík
K. Kovářík
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
B. Herrmann;M. Klasen;K. Kovářík

文献摘要

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在最小超对称标准模型中,我们计算了中性伴子通过规范或Higgs玻色子和方夸克湮灭为大质量夸克的全超对称(SUSY)-QCD修正,包括已知的热力学增强项的修正.从宇宙学数据中提取的超对称质量参数的校正的数值影响进行了分析,重力介导的超对称性-打破的情况下,并显示出相当大的,因此,这些校正必须包括在常见的分析工具。
We compute the full $\mathcal{O}({\ensuremath{\alpha}}_{s})$ supersymmetric (SUSY)-QCD corrections for neutralino annihilation into massive quarks through gauge or Higgs bosons and squarks in the minimal supersymmetric standard model, including the known resummation of logarithmically enhanced terms. The numerical impact of the corrections on the extraction of SUSY mass parameters from cosmological data is analyzed for gravity-mediated SUSY-breaking scenarios and shown to be sizable, so that these corrections must be included in common analysis tools.