中性伴随子湮灭到 q qbar g
高能物理 - 唯象学
2008-11-26 v3
摘要
我们计算了在 alpha_s^2/M_{squark}^6 阶下,由树图级和圈诱导过程干涉产生的 chi chi -> q qbar g 的截面。该干涉项在 alpha_s 阶上与 chi chi -> gg 相同;对于质量简并的标量夸克 M_{squark_R} = M_{squark_L} = M_{squark},我们发现 v_{rel} sigma_{int} = [-2 m_{chi}^2 / 3 M_{squark}^2] v_{rel} sigma(chi chi -> gg)。
引用
@article{arxiv.hep-ph/0608215,
title = {Neutralino annihilation to q qbar g},
author = {Vernon Barger and Wai-Yee Keung and Heather E. Logan and Gabe Shaughnessy},
journal= {arXiv preprint arXiv:hep-ph/0608215},
year = {2008}
}
备注
13 pages, 1 figure; v2: refs added; v3: version to appear in PRD