Zobrazeno 1 - 10
of 255
pro vyhledávání: '"Sahu, Narendra"'
In a canonical type-I seesaw scenario, the SM is extended with three singlet right-handed neutrinos (RHNs) $N_i, i=1,2,3$ with masses $M_i, i=1,2,3$ to simultaneously explain sub-eV masses of light neutrinos and baryon asymmetry of the Universe. In t
Externí odkaz:
http://arxiv.org/abs/2409.08828
Autor:
Adhikary, Amit, Borah, Debasish, Mahapatra, Satyabrata, Saha, Indrajit, Sahu, Narendra, Thounaojam, Vicky
We propose a novel scenario where thermally under-abundant dark matter (DM) can be revived with a first-order phase transition (FOPT). In the absence of FOPT, thermal DM abundance remains suppressed due to efficient annihilation via mediators. A FOPT
Externí odkaz:
http://arxiv.org/abs/2405.17564
Publikováno v:
Phys. Rev. D 110, 035033 (2024)
We study the possibility of generating dark matter (DM) and baryon asymmetry of the Universe (BAU) simultaneously in an asymmetric DM framework, which also alleviates the small-scale structure issues of cold DM. While the thermal relic of such self-i
Externí odkaz:
http://arxiv.org/abs/2404.14912
We propose a minimal scenario for light thermal dark matter (DM) in sub-GeV to GeV ballpark by incorporating a scalar singlet DM in a type-I seesaw scenario extended by an additional Higgs doublet $\phi_2$. The latter permits efficient annihilation o
Externí odkaz:
http://arxiv.org/abs/2401.01639
In this paper, we put forward a connection between the self-interacting dark matter and the Dirac nature of neutrinos. Our exploration involves a $Z_4 \otimes Z_4'$ discrete symmetry, wherein the Dirac neutrino mass is produced through a type-I seesa
Externí odkaz:
http://arxiv.org/abs/2312.12322
Publikováno v:
Phys. Rev. D 109, 055021 (2024)
We study a scotogenic extension of the minimal gauged $L_{\mu}-L_{\tau}$ model, including three right-handed singlet fermions and a scalar doublet all odd under an in-built $Z_2$ symmetry to explain the anomalous magnetic moments of the muon, CDF-II
Externí odkaz:
http://arxiv.org/abs/2310.11953
We study the possibility of generating light Dirac neutrino mass via scotogenic mechanism where singlet-doublet fermion dark matter (DM) plays non-trivial role in generating one-loop neutrino mass, anomalous magnetic moment of muon $(g-2)_\mu$ as wel
Externí odkaz:
http://arxiv.org/abs/2310.03721
In this work, we explore the intriguing possibility of connecting self-interacting dark matter (SIDM) with the recently observed exceptionally bright and long-duration Gamma Ray Burst (GRB221009A). The proposed minimal scenario involves a light scala
Externí odkaz:
http://arxiv.org/abs/2308.06172
We propose a simple model in the type-III seesaw framework to explain the neutrino mass, asymmetric dark matter, baryon asymmetry of the Universe, and the recently reported W-mass anomaly by CDF-II collaboration. We extend the standard model with a v
Externí odkaz:
http://arxiv.org/abs/2305.11138
We present two models where the familiar leptonic symmetry $L_e-L_\mu-L_\tau$ is a gauge symmetry. We show how anomaly cancellation constrains the allowed theories, with one of them requiring a fourth sequential chiral standard model fermion generati
Externí odkaz:
http://arxiv.org/abs/2302.01784