arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.01361hep-ph
收藏

第二个来自希格斯门的希格斯粒子

A second Higgs from the Higgs portal

Adam Falkowski, Christian Gross, Oleg Lebedev

摘要:

在希格斯门框架中,希格斯场通常与标准模型单线态混合,导致两种状态的存在,其中一种与在LHC观察到的125 GeV标量相一致。在这项工作中,我们分析了直接和间接的第二质量本征态和相应的混合角的约束。附加标量的存在可能是有益的,因为它可以稳定否则亚稳的电弱真空。我们发现所有的界限,包括稳定性约束,满足参数区域。我们还研究了观察到的125 GeV的希格斯标量的一对较重的状态的衰变的前景。

英文摘要:

In the Higgs portal framework, the Higgs field generally mixes with the Standard Model singlet leading to the existence of two states, one of which is identified with the 125 GeV scalar observed at the LHC. In this work, we analyse direct and indirect constraints on the second mass eigenstate and the corresponding mixing angle. The existence of the additional scalar can be beneficial as it can stabilise the otherwise-metastable electroweak vacuum. We find parameter regions where all of the bounds, including the stability constraints, are satisfied. We also study prospects for observing the decay of the heavier state into a pair of the 125 GeV Higgs-like 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。

↑