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arXiv 1401.6701hep-ph
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TeV尺度的宇宙跷跷板、真空稳定性和重Higgs

TeV Scale Universal Seesaw, Vacuum Stability and Heavy Higgs

Rabindra N. Mohapatra, Yongchao Zhang

摘要:

本文将标准模型嵌入TeV尺度左右通用跷跷板模型(SLRM)中,讨论了标准模型的真空稳定性问题。该模型在Higgs势中只有两个耦合参数$(λ_1, λ_2)$,在Higgs势中只有两个物理中性Higgs玻色子$(h, H)$。我们探索的范围内的值为$(λ_1, λ_2)$的轻希格斯玻色子质量$M_h=126$ GeV和真空是稳定的希格斯场的所有值。结合标量自耦合保持微扰直到$10^{16}$ GeV级的典型GUT标度的进一步要求,我们发现(i)第二希格斯$(H)$质量的上限和下限在以下范围内:$0.4 \leq \frac{M_H}{v_R}\leq 0.7$,其中$v_R$是宇称破缺标度,以及(ii)重矢量类顶、底和$τ$伙伴费米子($P_3, N_3, E_3$)质量具有上限$M_{P_3, N_3, E_3} \leq v_R$。我们讨论了有关LHC模型的一些唯象方面。

英文摘要:

We discuss the issue of vacuum stability of standard model by embedding it within the TeV scale left-right universal seesaw model (called SLRM in the text). This model has only two coupling parameters $(λ_1, λ_2)$ in the Higgs potential and only two physical neutral Higgs bosons $(h, H)$. We explore the range of values for $(λ_1, λ_2)$ for which the light Higgs boson mass $M_h=126$ GeV and the vacuum is stable for all values of the Higgs fields. Combining with the further requirement that the scalar self couplings remain perturbative till typical GUT scales of order $10^{16}$ GeV, we find (i) an upper and lower limit on the second Higgs $(H)$ mass to be within the range: $0.4 \leq \frac{M_H}{v_R}\leq 0.7$, where the $v_R$ is the parity breaking scale and (ii) that the heavy vector-like top, bottom and $τ$ partner fermions ($P_3, N_3, E_3$) mass have an upper bound $M_{P_3, N_3, E_3} \leq v_R$. We discuss some phenomenological aspects of the model pertaining to LHC.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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