49 citations · 147 across the 5 of their papers we have counts for
5 papers
Cosmological Imprints of Frozen-In Light Sterile Neutrinos
Samuel B. Roland, Bibhushan Shakya
We investigate observable cosmological aspects of sterile neutrino dark matter produced via the freeze-in mechanism. The study is performed in a framework that admits many cosmolog…
Hints of a PeV Scale Supersymmetric Neutrino Sector: Neutrino Masses, Dark Matter, keV and PeV Anomalies
Bibhushan Shakya, Samuel B. Roland, James D. Wells
Neutrino masses and light (keV-GeV) sterile neutrinos can arise naturally via a modified, low energy seesaw mechanism if the right-handed neutrinos are charged under a new symmetry…
PeV Neutrinos and a 3.5 keV X-Ray Line from a PeV Scale Supersymmetric Neutrino Sector
Samuel B. Roland, Bibhushan Shakya, James D. Wells
Recent measurements of PeV energy neutrinos at IceCube and a 3.5 keV X-ray line in the spectra of several galaxies are both tantalizing signatures of new physics. This paper shows…
Neutrino Masses and Sterile Neutrino Dark Matter from the PeV Scale
Samuel B. Roland, Bibhushan Shakya, James D. Wells
We show that active neutrino masses and a keV-GeV mass sterile neutrino dark matter candidate can result from a modified, low energy seesaw mechanism if right-handed neutrinos are…
Grassmannians for scattering amplitudes in 4d SYM and 3d ABJM
Henriette Elvang, Yu-tin Huang, Cynthia Keeler +4
Scattering amplitudes in 4d super Yang-Mills theory (SYM) can be described by Grassmannian contour integrals whose form depends on whether the external data is enco…