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Neutralino annihilation to q qbar g

Vernon Barger·Wai-Yee Keung·Heather E. Logan·Gabe Shaughnessy
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Abstract

We compute the cross section for chi chi -> q qbar g at order alpha_s^2/M_{squark}^6 arising from interference between the tree-level and loop-induced processes. This interference term is the same order in alpha_s as chi chi -> gg; for mass degenerate squarks M_{squark_R} = M_{squark_L} = M_{squark} we find v_{rel} sigma_{int} = [-2 m_{chi}^2 / 3 M_{squark}^2] v_{rel} sigma(chi chi -> gg).

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Vernon Barger, Wai-Yee Keung, Heather E. Logan, Gabe Shaughnessy. 2006-10-10. Neutralino annihilation to q qbar g. https://doi.org/10.1103/physrevd.74.075005

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