Search Publications

Neutrino lines from majoron dark matter

Garcia-Cely, Camilo; Heeck, Julian

Models with spontaneously broken global lepton number can lead to a pseudo-Goldstone boson as a long-lived dark matter candidate. Here we revisit the case of singlet majoron dark matter and discuss multiple constraints. For masses above MeV, this model could lead to a detectable flux of monochromatic mass-eigenstate neutrinos, which have flavor ra…

Pico-charged intermediate particles rescue dark matter interpretation of 511 keV signal

Farzan, Y.; Rajaee, M.

Various alleged indirect dark matter search signals, such as the 511 keV line from galaxy center or the PAMELA/AMS02 signal, are often challenged by the absence of corresponding signal from dwarf galaxies and/or by the absence of an impact on CMB through delayed recombination. We propose a novel scenario that can avoid these bounds based on the de…

Natural emergence of neutrino masses and dark matter from R-symmetry

Chakraborty, Sabyasachi; Chakrabortty, Joydeep

We propose a supersymmetric extension of the Standard Model (SM) with a continuous global U(1) _R symmetry. The R-charges of the SM fields are identified with that of their lepton numbers. As a result, both bilinear and trilinear ` R-parity violating' (RPV) terms could be present at the superpotential. However, R-symmetry is not an exac…