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arXiv · 2404.16337

Stability of the electroweak vacuum with respect to vacuum tunneling to the Komatsu vacuum in the cMSSM

Hyukjung Kim·Ewan D. Stewart·Heeseung Zoe
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Abstract

We investigate the stability of the electroweak vacuum with respect to vacuum tunneling to the Komatsu vacuum, which exists when $m_L^2 + m_{H_u}^2<0$, in the cMSSM. Employing the numerical tools SARAH, SPheno and CosmoTransitions, we scan and constrain the parameter space of the cMSSM up to 10 TeV. Regions excluded due to having a vacuum tunneling half-life less than the age of the observable universe are concentrated near the regions where the electroweak vacuum is tachyonic and are more stringent at smaller $m_0$, larger and negative $A_0$, and larger $\tan\beta$. New excluded regions, which satisfy $m_h \simeq 125 \text{GeV}$, are found.

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Hyukjung Kim, Ewan D. Stewart, Heeseung Zoe. 2024-04-25. Stability of the electroweak vacuum with respect to vacuum tunneling to the Komatsu vacuum in the cMSSM. https://arxiv.org/abs/2404.16337

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