Speaker
Prabhat Butola
(Homi Bhabha National Institute, Mumbai & The Institute of Mathematical Sciences, Chennai)
Description
In a dark matter (DM) annihilation process $\chi \bar{\chi} \to f \bar{f} \gamma$ , real photon emission and absorption processes along side with virtual correction $\chi \bar{\chi} \to f \bar{f} $ , contribute to annihilation cross section. We present thermal correction at NLO of annihilation cross section of DM through real photon emission and absorption processes utilizing techniques of thermal field theory (TFT). We utilize generalized Grammer and Yennie technique (GYT) in order to deal with Infrared divergences encountered in annihilation cross section calculations. Our calculations are relevant near electroweak phase transition.
| Track type | Dark Matter |
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Authors
Prabhat Butola
(Homi Bhabha National Institute, Mumbai & The Institute of Mathematical Sciences, Chennai)
D Indumathi
(The Institute of Mathematical Sciences, Chennai)
Pritam Sen
(Tata Institute of Fundamental Research)
