Probing chiral and flavored Z^ 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^ Z ′ is evolved. To explore the properties of its interactions we consider chiral (flavored) frameworks where Z^ Z ′ interactions depend on the handedness (generations) of the fermions. In this paper we focus on Z^ Z ′ -neutrino interactions which could be probed from cosmic explosions. We consider e^+ e^- ν ν ¯ → 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 (gX) (g X) and Z^ Z ′ mass (Mₙ^) (M Z ′) under Schwarzchild (Sc) and Hartle-Thorne (HT) scenarios. We also study ν -DM scattering through Z^ Z ′ to constrain gX-Mₙ^ g X - M Z ′ plane using IceCube data considering high energy neutrinos from cosmic blazar (TXS0506+056), active galaxy (NGC1068), the Cosmic Microwave Background (CMB) and the Lyman- α data, respectively. Finally highlighting complementarity we compare our results with current and prospective bounds on gX-Mₙ^ g X - M Z ′ plane from scattering, beam-dump and g-2 g - 2 experiments. PICS code.