arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2207.04059hep-ph
收藏

把$W$玻色子质量降低三倍

Tripling down on the $W$ boson mass

Henning Bahl, Wen Han Chiu, Christina Gao, Lian-Tao Wang, Yi-Ming Zhong

摘要:

CDF协作组宣布了对$W$玻色子质量的一种新的精确测量,它严重偏离了标准模型的预测。在这篇文章中,我们研究了这种测量对标准模型希格斯扇区的$SU(2)_L$三重态扩展(超荷$Y=1$)的参数空间的影响,重点是新的三重态近似为$\mathbb{Z}_2$ -奇数,而SM是$\mathbb{Z}_2$ -偶数的限制。我们研究了CDF-Ⅱ实验测量的$W$玻色子质量所偏好的三重态谱与其他电弱精密观测量和Higgs精密数据的相容性。我们全面考虑了新的希格斯态在LHC的信号,并强调了有前途的搜索渠道。此外,我们还调查的情况下,最轻的新希格斯粒子是晚期衰变或宇宙学稳定的宇宙学意义。

英文摘要:

A new precision measurement of the $W$ boson mass has been announced by the CDF collaboration, which strongly deviates from the Standard Model prediction. In this article, we study the implications of this measurement on the parameter space of the $SU(2)_L$ triplet extension (with hypercharge $Y=1$) of the Standard Model Higgs sector, focusing on a limit where the new triplet is approximate $\mathbb{Z}_2$-odd while the SM is $\mathbb{Z}_2$-even. We study the compatibility of the triplet spectrum preferred by the $W$ boson mass measured by the CDF-II experiment with other electroweak precision observables and Higgs precision data. We comprehensively consider the signals of new Higgs states at the LHC and highlighted the promising search channels. In addition, we also investigate the cosmological implications of the case in which the lightest new Higgs particle is either late decaying or cosmologically stable.

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。

↑