136 citations · 1.2k across the 36 of their papers we have counts for
37 papers
Search for a leptophobic doubly charged Higgs in same-sign four-lepton and six-lepton signatures in a left-right symmetric model
Tathagata Ghosh, Rafiqul Rahaman, Santosh Kumar Rai
We investigate the possibility of multi-lepton (four and six) signatures, including an exotic signature of same-sign four-lepton (SS4L) as signals of pair production of a doubly ch…
Joint cosmological and gravitational-wave population inference using dark sirens and galaxy catalogues
Rachel Gray, Freija Beirnaert, Christos Karathanasis +11
In the absence of numerous gravitational-wave detections with confirmed electromagnetic counterparts, the "dark siren" method has emerged as a leading technique of gravitational-wa…
Did we hear the sound of the Universe boiling? Analysis using the full fluid velocity profiles and NANOGrav 15-year data
Tathagata Ghosh, Anish Ghoshal, Huai-Ke Guo +5
In this paper, we analyse sound waves arising from a cosmic phase transition where the full velocity profile is taken into account as an explanation for the gravitational wave spec…
Deformation Theory of Asymptotically Conical Spin(7)-Instantons
Tathagata Ghosh
We develop the deformation theory of instantons on asymptotically conical -manifolds where the instanton is asymptotic to a fixed nearly -instanton at infinity. By re…
The Hitchhiker's guide to the galaxy catalog approach for gravitational wave cosmology
Jonathan R. Gair, Archisman Ghosh, Rachel Gray +28
We outline the ``dark siren'' galaxy catalog method for cosmological inference using gravitational wave (GW) standard sirens, clarifying some common misconceptions in the implement…
Interplay among gravitational waves, dark matter and collider signals in the singlet scalar extended type-II seesaw model
Purusottam Ghosh, Tathagata Ghosh, Subhojit Roy
We study the prospect of simultaneous explanation of tiny neutrino masses, dark matter (DM), and the observed baryon asymmetry of the Universe in a -symmetric complex singlet…