Probing the relaxed relaxion at the luminosity and precision frontiers
Probing the relaxed relaxion at the luminosity and precision frontiers
复制标题
探索亮度和精度边界上的轻松放松
DOI：
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复制
发表时间：
2020
影响因子：
5.4
通讯作者：
M. Safronova
中科院分区：
文献类型：
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作者：
A. Banerjee;Hyungjin Kim;O. Matsedonskyi;G. Perez;M. Safronova
电弱尺度的宇宙学弛豫是解决规范层次问题的一个有吸引力的方案。它的主要参与者，弛豫，是一个光自旋为零的场，它使希格斯质量相对于它的自然大值动态弛豫。我们证明了弛豫在场空间的一个特殊位置是一般稳定的，这导致了它的质量和模型的有效低能耦合的潜在非自然值的抑制。特别地，我们发现与希格斯粒子混合的弛豫可以比它的原始自然界高出几个数量级。因此，低能量观察者可能会发现弛豫理论正在被微调，尽管弛豫场景本身是以技术上自然的方式构建的。更一般地，我们确定了混合角的下界和上界。我们在光度和精度前沿研究了上述观测的实验意义。特别关注未来核时钟搜索快速振荡标量超轻暗物质的令人印象深刻的能力，其中提出了未来的预测灵敏度。
Cosmological relaxation of the electroweak scale is an attractive scenario addressing the gauge hierarchy problem. Its main actor, the relaxion, is a light spin-zero field which dynamically relaxes the Higgs mass with respect to its natural large value. We show that the relaxion is generically stabilized at a special position in the field space, which leads to suppression of its mass and potentially unnatural values for the model’s effective low-energy couplings. In particular, we find that the relaxion mixing with the Higgs can be several orders of magnitude above its naive naturalness bound. Low energy observers may thus find the relaxion theory being fine-tuned although the relaxion scenario itself is constructed in a technically natural way. More generally, we identify the lower and upper bounds on the mixing angle. We examine the experimental implications of the above observations at the luminosity and precision frontiers. A particular attention is given to the impressive ability of future nuclear clocks to search for rapidly oscillating scalar ultra-light dark matter, where the future projected sensitivity is presented.
影响因子：
8.6
作者：
Ken Van Tilburg;N. Leefer;L. Bougas;D. Budker
通讯作者：
Ken Van Tilburg;N. Leefer;L. Bougas;D. Budker
影响因子：
5
作者：
A. Arvanitaki;S. Dimopoulos;Marios Galanis;L. Lehner;J. Thompson;Ken Van Tilburg
通讯作者：
A. Arvanitaki;S. Dimopoulos;Marios Galanis;L. Lehner;J. Thompson;Ken Van Tilburg
影响因子：
64.8
作者：
Seiferle, Benedict;von der Wense, Lars;Thirolf, Peter G.
通讯作者：
Thirolf, Peter G.