5 papers
Soft Collinear Effective Theory for Heavy QCD Axions
Deepanshu Bisht, Sabyasachi Chakraborty, Siddhartha Karmakar +1
We develop a soft-collinear effective theory (SCET) framework for heavy QCD axion, considering two low-energy realizations and taking as a benchmark mode. In the first re…
Axion EFT in the BMHV Scheme: Flavor Currents, Evanescent Operators and Ward Identities
Deepanshu Bisht, Sabyasachi Chakraborty, Atanu Samanta
We present a systematic analysis of axion effective field theory within the Breitenlohner-Maison-`t Hooft-Veltman (BMHV) scheme, focusing on the renormalization of fermionic dimens…
A comprehensive study of ALPs from -decays
Deepanshu Bisht, Sabyasachi Chakraborty, Atanu Samanta
We present a comprehensive study of axion-like particles (ALPs) through flavor changing neutral current processes, such as followed by $a\to\text{hadronic}, γγ,μ^+μ^…
Feasibility of ultrarelativistic bubbles in SMEFT
Upalaparna Banerjee, Sabyasachi Chakraborty, Suraj Prakash +1
A first order electroweak phase transition probes physics beyond the Standard Model on multiple frontiers and therefore is of immense interest for theoretical exploration. We condu…
Photo-production of axions in Supernovae
Sabyasachi Chakraborty, Aritra Gupta, Miguel Vanvlasselaer
Compact stellar objects like supernovae and neutron stars are believed to cool by emitting axions predominantly via axion bremsstrahlung (), pion conversion ($Ï^- p^+…