Volume 414 - 41st International Conference on High Energy physics (ICHEP2022) - Beyond the Standard Model
Prospects of a Strong first-order Electroweak Phase Transition in the $Z_3$-NMSSM
S. Roy*, A. Chatterjee and A. Datta
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Pre-published on: December 02, 2022
Published on:
Abstract
We have studied the viability and possible patterns of a strong
first-order electroweak phase transition (SFOEWPT) within the $Z_3$-symmetric Next-to-Minimal Supersymmetric
Standard Model (NMSSM), in view of the latest experimental results from the dark matter (DM) sector, Higgs sector and the searches of the lighter chargino and neutralinos at the Large Hadron Collider (LHC). We show that the region of parameter space with relatively small $\mu_\mathrm{eff}$ that favors an SFOEWPT has started to get excluded from the searches at the LHC and various DM experiments. However, there still remain phenomenologically much involved and compatible regions for an SFOEWPT that are yet not
sensitive to the latest LHC and DM searches. We further estimate the production of stochastic gravitational waves (GW) from an SFOEWPT within and without the bag model and the prospects of detecting such signals at various future/proposed GW experiments.
DOI: https://doi.org/10.22323/1.414.0138
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