Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Purusottam Ghosh"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 8, Pp 1-26 (2024)
Abstract The current upper limit on $$N_\textrm{eff}$$ N 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 th
Externí odkaz:
https://doaj.org/article/0bf3f8ba9ca84214bc49007b2377539c
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-63 (2023)
Abstract 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 scala
Externí odkaz:
https://doaj.org/article/a9caf12b009b4217b4a9bb3cd049072c
Autor:
Purusottam Ghosh, Sk Jeesun
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 9, Pp 1-15 (2023)
Abstract 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
Externí odkaz:
https://doaj.org/article/ce9db7cebbb54609ac1467acbc9a635b
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 7, Pp 1-36 (2023)
Abstract 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-depende
Externí odkaz:
https://doaj.org/article/47bd684c36904afea7f762fbd16f76d2
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 12, Pp 1-52 (2022)
Abstract 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 a
Externí odkaz:
https://doaj.org/article/51959dac928f430aae05544505ec57e1
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 10, Pp 1-25 (2022)
Abstract We consider a fermionic dark matter (DM) in the left–right symmetric framework by introducing a pair of vector-like (VL) doublets in the particle spectrum. The stability of the DM is ensured through an unbroken $$\mathcal {Z}_2$$ Z 2 symme
Externí odkaz:
https://doaj.org/article/1790980713484b3cba4ed785f968f552
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 3, Pp 1-57 (2020)
Abstract The idea of this work is to investigate the constraints on the dark matter (DM) allowed parameter space from high scale validity (absolute stability of Higgs vacuum and perturbativity) in presence of multi particle dark sector and heavy righ
Externí odkaz:
https://doaj.org/article/dda841a0056b4099a32b71a8dbe57707
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-49 (2019)
Abstract We propose an Abelian gauged version of the singlet-doublet fermionic dark matter (DM) model where the DM, combination of a vector like fermion doublet and a fermion singlet, is naturally stabilised by the gauge symmetry without requiring an
Externí odkaz:
https://doaj.org/article/51c8773026494cccbbdef18614c55315
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 2, Pp 1-44 (2019)
Abstract Basic idea of this analysis is to achieve a two-component dark matter (DM) framework composed of a scalar and a fermion, with non-negligible DM-DM interaction contributing to thermal freeze out (hence relic density), but hiding them from dir
Externí odkaz:
https://doaj.org/article/4a382b46c53b4cccbbb8a88e5016ba50
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 10, Pp 1-31 (2017)
Abstract The minimal Higgs portal dark matter model is increasingly in tension with recent results form direct detection experiments like LUX and XENON. In this paper we make a systematic study of simple extensions of the ℤ 2 $$ {\mathbb{Z}}_2 $$ s
Externí odkaz:
https://doaj.org/article/0a49be1dbb514733a799ad4c1d5d3ef5