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 2104.03291hep-phhep-exhep-lat
收藏

μ子${g-2}$反常与中微子磁矩

Muon ${g-2}$ Anomaly and Neutrino Magnetic Moments

K. S. Babu, Sudip Jana, Manfred Lindner, Vishnu P. K

摘要:

我们表明,一个统一的框架上的$SU(2)_H$水平对称性,产生一个自然大的中微子跃迁磁矩,并解释了氙1 T电子反冲过剩的基础上,也预测了一个积极的转变,在μ子异常磁矩。这种位移的大小与布鲁克海文的测量以及费米实验室最近对μ子$g-2$的测量是一致的。一个相对较轻的中性标量,来自一个质量接近100 GeV的希格斯双重态,贡献给μ子$g-2$,而它的带电伙伴诱导中微子磁矩。与其他多标量理论相比,在这里提出的模型中,没有自由来控制μ子$g-2$贡献的符号和强度。我们分析了这个框架的对撞机测试,发现HL-LHC可以探测这些模型的整个参数空间。

英文摘要:

We show that a unified framework based on an $SU(2)_H$ horizontal symmetry which generates a naturally large neutrino transition magnetic moment and explains the XENON1T electron recoil excess also predicts a positive shift in the muon anomalous magnetic moment. This shift is of the right magnitude to be consistent with the Brookhaven measurement as well as the recent Fermilab measurement of the muon $g-2$. A relatively light neutral scalar from a Higgs doublet with mass near 100 GeV contributes to muon $g-2$, while its charged partner induces the neutrino magnetic moment. In contrast to other multi-scalar theories, in the model presented here there is no freedom to control the sign and strength of the muon $g-2$ contribution. We analyze the collider tests of this framework and find that the HL-LHC can probe the entire parameter space of these models.

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。

↑