4 papers
Finite Temperature NLO Corrections in Relativistic Scatterings: Implications for Dark Matter Freeze-In
Sampriti Roy, Pritam Sen, Satyanarayan Mukhopadhyay
We study the next-to-leading order (NLO) virtual and thermal corrections to relativistic scattering processes involving scalar particles in the early Universe the…
An effective field theory for thermal QCD with 2+1 flavours
Sourendu Gupta, Pritam Sen, Rishi Sharma
We write a long-distance effective field theory (EFT) for QCD at finite temperature just below the crossover temperature . The low energy constants (LECs) of this EFT are obta…
Thermal corrections to dark matter annihilation with real photon emission/absorption
Prabhat Butola, D. Indumathi, Pritam Sen
The dark matter relic density is being increasingly precisely measured. This relic density is theoretically determined by a Boltzmann equation which computes the dark matter distri…
NLO thermal corrections to dark matter annihilation cross sections: a novel approach
Prabhat Butola, D. Indumathi, Pritam Sen
The dark matter relic density has been increasingly accurately measured by successive generations of experiments. The Boltzmann equation determines the yields using the dark matter…