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pro vyhledávání: '"singlet: scalar"'
The singlet scalar dark matter (DM) model is a minimal extension of the Standard Model (SM). This model features only two free parameters: the singlet scalar mass $m_S$ and the quartic coupling $a_2$ between the singlet scalar and the SM Higgs double
Externí odkaz:
http://arxiv.org/abs/2410.21089
Autor:
Cho, Gi-Chol, Idegawa, Chikako
We study the two Higgs doublet model with a complex singlet scalar whose imaginary part acts as a dark matter (DM). The scattering of DM and quarks, mediated by three CP-even scalars in this model, is suppressed when masses of CP-even scalars are deg
Externí odkaz:
http://arxiv.org/abs/2410.14328
Autor:
Zakeri, S. Peyman
In this work, we find a new signal of dark matter (DM) through an intensive gamma ray burst (GRB), called GRB 221009A. This indirect detection approach devotes to the decay of DM particles into high energy (HE) photons. In this context, a singlet sca
Externí odkaz:
http://arxiv.org/abs/2410.04742
Scalar extensions of the Standard Model are of much interest at the LHC and future colliders. In particular, these models can give rise to resonant di-Higgs production and alter the Higgs trilinear coupling. In this paper, we study di-Higgs productio
Externí odkaz:
http://arxiv.org/abs/2410.08275
We propose a unified solution with $Z_4$ discrete symmetry for small neutrino masses and stability of dark matter. The Standard Model is extended with an inert doublet scalar, a dark singlet scalar, a spurion scalar and right-handed neutrinos, which
Externí odkaz:
http://arxiv.org/abs/2407.13595
Employing effective field theory techniques, we advance computations of thermal parameters that enter predictions for the gravitational wave spectra from first-order electroweak phase transitions. Working with the real-singlet-extended Standard Model
Externí odkaz:
http://arxiv.org/abs/2409.17554
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
Autor:
De, Bibhabasu
Publikováno v:
Phys. Lett. B 855 (2024) 138784
The Standard Model (SM), if augmented with a light SM-singlet scalar $\phi$ and a TeV-scale scalar leptoquark (LQ) $S_1$, 2-body charged lepton flavor violating (CLFV) decay channels can be accessed with $\phi$ as one of the final states, where the l
Externí odkaz:
http://arxiv.org/abs/2405.06970
We study the coscattering mechanism in a simple Higgs portal which add two real singlet scalars to the Standard Model. In this scenario, the lighter scalar is stabilized by a single $\mathcal{Z}_2$ symmetry and acts as the dark matter relic, whose fr
Externí odkaz:
http://arxiv.org/abs/2404.19057
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