A Study of the Higgs Mass with the Effective Potential and Higgs Decays in the U(1)XSSM

Zhao, Shu-Min; Wang, Xi; Dong, Xing-Xing; Zhang, Haibin; Feng, Tao

doi:10.3390/sym14102153

Symmetry

2022

DOI: 10.3390/sym14102153

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A Study of the Higgs Mass with the Effective Potential and Higgs Decays in the U(1)XSSM

Shu-Min Zhao

Xi Wang

Xing-Xing Dong

et al.

Abstract: As the U(1) extension of the minimal supersymmetric standard model, the U(1)XSSM has new superfields, such as right-handed neutrinos, and three Higgs singlets. In the U(1)XSSM, the lightest CP-even Higgs mass mh0 is studied by using the Higgs effective potential with one-loop corrections. We also calculate the Higgs decays h0→γγ, h0→VV(V=W,Z), h0→ll¯Z, and h0→νν¯Z. The obtained results are reasonable, and they are in favor of the study of the Higgs characteristic and the phenomenology of the U(1)XSSM.

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2024

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Cited by 2 publications

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The Higgs boson decay h → bs in the U(1)XSSM

Gao,

Zhao,

Liu

et al. 2024

J. High Energ. Phys.

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In the U(1)XSSM, we delve into the quark flavor violation of h → bs, where h is identified as the SM-like Higgs boson discovered at the LHC. As the U(1) extension of the minimal supersymmetric standard model (MSSM), the U(1)XSSM has new super fields such as right-handed neutrinos and three Higgs singlets. We conduct a thorough analysis of the underlying mechanisms and parameter dependencies of h → bs in the U(1)XSSM. In the U(1)XSSM, we discover that the Br(h → bs) for the Higgs decay to bs could significantly differ from the expectation in the standard model (SM), depending on the values of the new parameters introduced in the model. Our research not only contributes to a deeper understanding of Higgs physics within the U(1)XSSM, but also provides valuable guidance for new physics (NP).

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The Higgs boson decay h → bs in the U(1)XSSM

Gao,

Zhao,

Liu

et al. 2024

J. High Energ. Phys.

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Neutralino dark matter in the extension of MSSM with two triplets and singlet

Yang,

Zhao

et al. 2024

Eur. Phys. J. C

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In an extension of MSSM with two triplets and a singlet, called the TNMSSM, there are seven neutralinos which can enrich the study of cold dark matter if one expects that the weakly interacting massive particle (WIMP) is responsible for the observation of Planck satellite. Such a model, compared to the MSSM, can naturally offer a solution to the $$\mu $$ μ problem, and its lightest neutralino, which is bino-like, can also provide a correct relic density by using the coannihilation mechanism due to the newly added triplinos. Taking into account the related experimental measurements, such as the bound on the SM-like Higgs mass, the B meson rare decays, the anomalous magnetic moment of the muon $$a_\mu $$ a μ , the Large Hadron Collider (LHC) measurements and the latest dark matter direct detection experiment LUX-ZEPLIN (LZ), the TNMSSM parameter space can be strictly limited. In respect to all the constraints mentioned above, we find that a bino-like neutralino with a mass in the region $$[100, 450]~\textrm{GeV}$$ [ 100 , 450 ] GeV can successfully account for the correct dark matter relic density. Additionally, most of the viable parameter space can be tested in the near future experiments such as the Xenon-nT experiment or LHC.

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A Study of the Higgs Mass with the Effective Potential and Higgs Decays in the U(1)XSSM

Cited by 2 publications

References 33 publications

The Higgs boson decay h → bs in the U(1)XSSM

The Higgs boson decay h → bs in the U(1)XSSM

Neutralino dark matter in the extension of MSSM with two triplets and singlet

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