Zobrazeno 1 - 10
of 82
pro vyhledávání: '"Ghosh, Purusottam"'
We study the Leptogenesis and Dark Matter in the presence of an extra singlet complex scalar field in an extended discrete $\mathcal{Z_{\rm 3}}$ symmetry. The vacuum expectation value of the new scalar spontaneously breaks the $\mathcal{Z_{\rm 3}}$ s
Externí odkaz:
http://arxiv.org/abs/2409.17067
The relativistic degrees of freedom ($N_{\rm eff}$) is one of the crucial cosmological parameters. The precise measurement of $N_{\rm eff}$ at the time of cosmic microwave background formation, by Planck 2018 can be used to understand the new fundame
Externí odkaz:
http://arxiv.org/abs/2404.10077
The current upper limit on $N_{\rm eff}$ at the time of CMB by Planck 2018 can place stringent constraints in the parameter space of BSM paradigms where their additional interactions may affect neutrino decoupling. Motivated by this fact in this pape
Externí odkaz:
http://arxiv.org/abs/2312.16304
We investigate ways of identifying two kinds of dark matter (DM) component particles at high-energy colliders. The strategy is to notice and distinguish double-peaks(humps) in the missing energy/transverse energy distribution. The relative advantage
Externí odkaz:
http://arxiv.org/abs/2312.14003
Autor:
Ghosh, Purusottam, Jeesun, Sk
In this work we study the hybrid kind of dark matter(DM) production mechanism where both thermal and non-thermal contribution at two different epochs set the DM relic abundance. This hybrid set up in turn shifts the parameter space of DM in contrast
Externí odkaz:
http://arxiv.org/abs/2306.12906
We investigate the phenomenology of a non-thermal dark matter (DM) candidate in the context of flavor models that explain the hierarchy in the masses and mixings of quarks and leptons via the Froggatt-Nielsen (FN) mechanism. A flavor-dependent $U(1)_
Externí odkaz:
http://arxiv.org/abs/2305.03167
The basic idea of this work is to achieve the observed relic density of a non-thermal dark matter(DM) and its connection with Cosmic Microwave Background (CMB) via additional relativistic degrees of freedom which are simultaneously generated during t
Externí odkaz:
http://arxiv.org/abs/2301.13754
Publikováno v:
JHEP10(2023)057
We study the prospect of simultaneous explanation of tiny neutrino masses, dark matter (DM), and the observed baryon asymmetry of the Universe in a $Z_3$-symmetric complex singlet scalar extended type-II seesaw model. The complex singlet scalar plays
Externí odkaz:
http://arxiv.org/abs/2211.15640
The identification and isolation of two WIMP dark matter (DM) components at colliders is of wide interest on the one hand but extremely challenging on the other, especially when the dominant signal of both DM components is of the mono-X type ($X=\gam
Externí odkaz:
http://arxiv.org/abs/2211.10749
Autor:
Ghosh, Dilip Kumar1 (AUTHOR), Ghosh, Purusottam1 (AUTHOR), Jeesun, Sk1 (AUTHOR) skjeesun48@gmail.com, Srivastava, Rahul2 (AUTHOR)
Publikováno v:
European Physical Journal C -- Particles & Fields. Aug2024, Vol. 84 Issue 8, p1-26. 26p.