3 papers
hep-ph2025
Baryogenesis from a Majorana Fermion Coupled to Quarks
Shrihari Gopalakrishna, Rakesh Tibrewala
In the theory with a Majorana fermion () coupled to quark-like fermions () via a dimension-six four-fermion vector-vector interaction, we have computed in an earlier work the…
hep-th2025
Generalized Landau Yang Theorem
T. R. Govindarajan, Rakesh Tibrewala
Landau Yang theorem is well known for the past several decades. It prohibits the decay of a massive spin 1 particle to two photons. This emerges simply from the representation theo…
hep-ph2025
Baryon Asymmetry from the Decay and Scattering of a Majorana Fermion Pair Coupled to Quarks
Shrihari Gopalakrishna, Rakesh Tibrewala
We compute the baryon asymmetry in decay and scattering processes involving the electromagnetically charge-neutral fermion that carries nonzero baryon number and interacts wit…