Probing chiral and flavored $Z^{\prime }$ from cosmic bursts through neutrino interactions

Abstract

The origin of tiny neutrino mass is an unsolved puzzle leading to a variety of phenomenological aspects beyond the Standard Model (BSM). We consider $U(1)$ gauge extension of the Standard Model (SM) where so-called seesaw mechanism is incarnated with the help of thee generations of Majorana type right-handed neutrinos followed by the breaking of $U(1)$ and electroweak gauge symmetries providing anomaly free structure. In this framework, a neutral BSM gauge boson $Z^{\prime }$ is evolved. To explore the properties of its interactions we consider chiral (flavored) frameworks where $Z^{\prime }$ interactions depend on the handedness (generations) of the fermions. In this paper we focus on $Z^{\prime }-$neutrino interactions which could be probed from cosmic explosions. We consider $\nu \overline{\nu }\to e^{+}{e}^{-}$ process which can energize gamma-ray burst (GRB221009A, so far the highest energy) through energy deposition. Hence estimating these rates we constrain $U(1)$ gauge coupling $(g_X)$ and $Z^{\prime }$ mass $(M_{Z^{\prime }})$ under Schwarzchild (Sc) and Hartle-Thorne (HT) scenarios. We also study $\nu -$DM scattering through $Z^{\prime }$ to constrain $g_X-M_{Z^{\prime }}$ plane using IceCube data considering high energy neutrinos from cosmic blazar (TXS0506+056), active galaxy (NGC1068), the Cosmic Microwave Background (CMB) and the Lyman-$\alpha$ data, respectively. Finally highlighting complementarity we compare our results with current and prospective bounds on $g_X-M_{Z^{\prime }}$ plane from scattering, beam-dump and $g-2$ experiments.

Comments: 47 pages, 16 figures