Study muon g-2 at two-loop level in the $U(1)_X$SSM

Zhao, Shu-Min; Su, Lu-Hao; Dong, Xing-Xing; Wang, Tong-Tong; Feng, Tai-Fu

doi:10.48550/arxiv.2107.03571

Cited by 4 publications

(7 citation statements)

References 28 publications

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“…X is the local gauge group of U(1) X SSM, which is the U(1) expansion of MSSM [27][28][29]. There are new superfields in U(1) X SSM, such as three Higgs singlets η, η, Ŝ and right-handed neutrinos νi , which are not found in the MSSM.…”

Section: The Relevant Content Ofmentioning

confidence: 99%

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Higgs boson decays $h\rightarrow Z γ$ and $h\rightarrow m_V Z$ in the $U(1)_X$SSM

Wang¹,

Zhao²,

Wang³

et al. 2022

Preprint

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This paper mainly investigates the Higgs boson decays h → Zγ and h → m V Z in the U (1) X SSM model, with m V denoting ω, ρ, φ, J/ψ and Υ. The CP-even and CP-odd hγZ couplings are corrected by the new particle loop diagrams. Using the effective Lagrangian method, we calculate the effective constants C γZ and CγZ for the vertex hγZ. Numerically, the ratio Γ U (1) X (h → Zγ)/Γ SM (h → Zγ) is within 1.02 − 1.35. For the vector meson ω, ρ, φ and J/ψ, the ratio Γ U (1) X (h → m V Z)/Γ SM (h → m V Z) is mainly distributed in the range 1.01 − 1.45. When m V represents Υ, the larger value of the ratio Γ U (1) X (h → ΥZ)/Γ SM (h → ΥZ) is mostly located in the range 1.002 − 1.30. This work would encourage a detection on h → Zγ at LHC for finding NP beyond SM.

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Section: The Relevant Content Ofmentioning

confidence: 99%

“…[33][34][35][36]. The gauge bosons A X µ , A Y µ and V 3 µ mix together at the tree level, and produce a 3 × 3 mass squared matrix for neutral gauge bosons [29]. We apply two mixing angles θ W and θ ′ W to diagonalize this matrix.…”

Section: The Relevant Content Ofmentioning

confidence: 99%

Higgs boson decays $h\rightarrow Z γ$ and $h\rightarrow m_V Z$ in the $U(1)_X$SSM

Wang¹,

Zhao²,

Wang³

et al. 2022

Preprint

Self Cite

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show abstract

“…Three gauge bosons A X µ , A Y µ and V 3 µ mix together and produce a 3 × 3 mass squared matrix for neutral gauge bosons [18]. To diagonalize this matrix, two mixing angles θ W and θ ′ W are needed.…”

Section: The U (1) X Ssmmentioning

confidence: 99%

“…To diagonalize this matrix, two mixing angles θ W and θ ′ W are needed. sin 2 θ ′ W is defined as [18] sin…”

Section: The U (1) X Ssmmentioning

confidence: 99%

The strong first order electroweak phase transition in the $U(1)_X$SSM

Zhao

Zhang

Dong³

et al. 2021

Preprint

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In the U (1) X extension of the minimal supersymmetric standard model, we study a two step phase transition for the universe. The first step happens at high temperature from origin to z coordinate axis. The second step is the electroweak phase transition(EWPT) with barrier between two minima, which is the first order EWPT. We study the condition for this type phase transition to occur. The strong first order EWPT is our expection, and with the supposed parameters the evolution of the universe is plotted by the figures.

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“…One of the classic explanations of the discrepancy is provided by supersymmetry (SUSY), due to loops of light sleptons, µ, ν µ , and light electroweak gauginos [24]. These days such an explanation must be made consistent with the measurement of the Higgs boson mass, and LHC constraints on superpartners, both of which point towards rather heavy squarks and gluinos, and such studies have been recently performed in various SUSY models [25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Muon g-2, Dark Matter and the Higgs mass in No-Scale Supergravity

Forster,

King

2021

Preprint

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We discuss the phenomenology of no-scale supergravity (SUGRA), in which the universal scalar mass is zero at the high scale, focussing on the recently updated muon g-2 measurement, and including dark matter and the correct Higgs boson mass. Such no-scale supergravity scenarios arise naturally from string theory and are also inspired by the successful Starobinsky inflation, with a class of minimal models leading to a strict upper bound on the gravitino mass m 3/2 < 10 3 TeV. We perform a Monte Carlo scan over the allowed parameter space, assuming a mixture of pure gravity mediated and universal gaugino masses, using the SPheno package linked to FeynHiggs, MicrOmegas and CheckMate, displaying the results in terms of a Likelihood function. We present results for zero and non-zero trilinear soft parameters, and for different signs of gaugino masses, giving a representative set of benchmark points for each viable region of parameter space. We find that, while no-scale SUGRA can readily satisfy the dark matter and Higgs boson mass requirements, consistent with all other phenomenological constraints, the muon g-2 measurement may be accommodated only in certain regions of parameter space, close to the LHC excluded regions for light sleptons and charginos.

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Study muon g-2 at two-loop level in the $U(1)_X$SSM

Cited by 4 publications

References 28 publications

Higgs boson decays $h\rightarrow Z γ$ and $h\rightarrow m_V Z$ in the $U(1)_X$SSM

Higgs boson decays $h\rightarrow Z γ$ and $h\rightarrow m_V Z$ in the $U(1)_X$SSM

The strong first order electroweak phase transition in the $U(1)_X$SSM

Muon g-2, Dark Matter and the Higgs mass in No-Scale Supergravity

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