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arXiv 2201.10159hep-phhep-ex
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共形不变标量暗物质模型的真空稳定性

Vacuum stability of conformally invariant scalar dark matter models

Yeong Gyun Kim, Kang Young Lee, Jungil Lee, Soo-hyeon Nam

摘要:

本文讨论了具有O(N)对称性的标量暗物质多重态和电弱单重标量介体的经典标度不变可重整模型的真空结构和真空稳定性。我们的共形不变标量势通过Coleman-Weinberg机制产生电弱对称破缺,新的标量单重态介质通过标量暗物质以及标准模型粒子的辐射修正获得其质量。考虑到目前的对撞机边界,我们找到的区域的参数空间的标量势是稳定的,所有的无质量耦合是微扰的普朗克尺度。在满足真空稳定性条件的基础上,给出了新的物理参数的允许范围,并预测了新的标量多重态对目标核的弹性散射截面,为直接探测暗物质奠定了基础.我们还讨论了对撞机签名和未来发现的新标量的潜力。

英文摘要:

We discuss vacuum structure and vacuum stability in classically scale-invariant renormalizable models with a scalar dark matter multiplet of global O(N) symmetry together with an electroweak singlet scalar mediator. Our conformally invariant scalar potential generates the electroweak symmetry breaking via the Coleman-Weinberg mechanism, and the new scalar singlet mediator acquires its mass through radiative corrections of the scalar dark matters as well as of the standard model particles. Taking into account the present collider bounds, we find the region of parameter space where the scalar potential is stable and all the massless couplings are perturbative up to the Planck scale. With the obtained parameter sets satisfying the vacuum stability condition, we present the allowed region of new physics parameters satisfying the recent measurement of relic abundance, and predict the elastic scattering cross section of the new scalar multiplet into target nuclei for a direct detection of the dark matter. We also discuss the collider signatures and future discovery potentials of the new scalars.

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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