One-loop correction to heavy dark matter annihilation
One-loop correction to heavy dark matter annihilation
复制标题
重暗物质湮灭的单环校正
DOI：
10.1103/physrevd.95.055001
复制
发表时间：
2016
影响因子：
5
通讯作者：
I. Stewart
中科院分区：
文献类型：
--
作者：
G. Ovanesyan;N. Rodd;T. Slatyer;I. Stewart
我们在一个模型中计算了TeV尺度暗物质湮灭的单圈修正，其中暗物质由一个SU(2)$_L$三重态的Majorana费米子描述，例如WINO。我们使用这个框架在一个回路中确定了暗物质和弱玻色子质量尺度下的高尺度和低尺度MS-bar匹配系数。这一计算的一部分以前在文献中进行了数值计算；我们发现我们的分析结果与以前的工作不同，并讨论了这种分歧的潜在根源。我们的结果被用来将暗物质湮灭率扩展到NLL‘(NLL+O($\α2$)修正)，这使得在目前和即将到来的实验中能够精确地确定间接探测特征。
We calculate the one-loop corrections to TeV scale dark matter annihilation in a model where the dark matter is described by an SU(2)$_L$ triplet of Majorana fermions, such as the wino. We use this framework to determine the high and low-scale MS-bar matching coefficients at both the dark matter and weak boson mass scales at one loop. Part of this calculation has previously been performed in the literature numerically; we find our analytic result differs from the earlier work and discuss potential origins of this disagreement. Our result is used to extend the dark matter annihilation rate to NLL' (NLL+O($\alpha_2$) corrections) which enables a precise determination of indirect detection signatures in present and upcoming experiments.