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arXiv · 2501.02972

Electroweak phase transition with the confinement scale of the strong sector or dilaton in the minimal composite Higgs model

Vo Quoc Phong·Truong Van Tien·Phan Hong Khiem
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Abstract

The minimal Composite Higgs model (MCHM) provides an effective trigger for the Baryogenesis scenario through the confinement scale of the strong sector ($f$) or dilaton ($\chi$). $f$ is a parameter with mass dimension, which stores the resonances of particles at high energies and has a suitable value of about $800$ GeV. But when $300$ GeV $\le f \le 400$ GeV, the effective Higgs potential has a first-order electroweak phase transition. Therefore, although $f$ cannot be a perfect trigger, it does suggest an effective approach that accommodates the resonances of particles. Thus the investigation of the electroweak phase transition according to $f$ has confirmed that the inclusion of the dilaton in the effective potential is reasonable. Accordingly, we derive a dilaton potential with appropriate parameter domains and $f=800$ GeV; the mass of the dilaton ranges from $300$ GeV to $700$ GeV, which will give an electroweak phase transition strength greater than $1$ and less than $3$, enough for a first-order phase transition. This is a direct and clear evidence of the triggers for the first-order EWPT in the MCHM.

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Vo Quoc Phong, Truong Van Tien, Phan Hong Khiem. 2025-01-06. Electroweak phase transition with the confinement scale of the strong sector or dilaton in the minimal composite Higgs model. https://arxiv.org/abs/2501.02972

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