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II型跷跷板模型标度不变单重态扩展的真空稳定性与辐射对称性破缺

Vacuum Stability and Radiative Symmetry Breaking of the Scale-Invariant Singlet Extension of Type II Seesaw Model

Bayu Dirgantara, Kristjan Kannike, Warintorn Sreethawong

AI总结:

本文研究II型跷跷板模型的单重态标量扩展中的辐射对称性破缺,首次完整推导标量势有下界条件,并结合微扰性与对撞机约束确定可在一圈水平实现电弱对称性破缺的参数空间,发现重类三重态希格斯玻色子需近简并,且$λ_{H}$可保持为正直至普朗克能标。

摘要:

电弱对称性破缺的起源与中微子质量问题是粒子物理学中的两大难题。中微子质量的产生需要超越标准模型的新物理,同时也促使人们重新审视对称性破缺的物理机制。本文旨在研究II型跷跷板中微子质量模型的单重态标量扩展中的辐射对称性破缺。我们首次以完全一般的形式推导出该模型标量势的有下界条件。在最小化多标量势时采用了Gildener-Weinberg方法。在施加有下界条件和微扰性条件以及来自对撞机的实验约束之后,我们找到了能够在一圈水平上通过辐射机制实现电弱对称性破缺的标量四次耦合参数空间。为满足所有约束,重的类三重态希格斯玻色子的质量必须近简并。希格斯双态四次耦合$λ_{H}$的演化可以被阻止为负,直至普朗克能标。

英文摘要:

The questions of the origin of electroweak symmetry breaking and neutrino mass are two major puzzles in particle physics. Neutrino mass generation requires new physics beyond the Standard Model and also suggests reconsideration of physics of symmetry breaking. The aim of this paper is to study radiative symmetry breaking in the singlet scalar extension of type II seesaw neutrino mass model. We derive bounded-from-below conditions for the scalar potential of the model in full generality for the first time. The Gildener-Weinberg approach is utilised in minimising the multiscalar potential. Upon imposing the bounded-from-below and perturbativity conditions, as well as experimental constraints from colliders, we find the parameter space of scalar quartic couplings that can radiatively realise electroweak symmetry breaking at one-loop level. To satisfy all the constraints, the masses of the heavy triplet-like Higgs bosons must be nearly degenerate. The evolution of the Higgs doublet quartic coupling $λ_{H}$ can be prevented from being negative up to the Planck scale.

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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