arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2204.09671hep-phastro-ph.COhep-ex
收藏

暗物质、中微子质量和W质量异常的单重态-二重态费米子起源

Singlet-Doublet Fermion Origin of Dark Matter, Neutrino Mass and W-Mass Anomaly

Debasish Borah, Satyabrata Mahapatra, Narendra Sahu

摘要:

基于最近CDF与$7σ$合作报道的W玻色子质量异常的统计显著性,我们考虑了一个单重态-二重态(SD)Majorana费米子暗物质(DM)模型,其中对W玻色子质量的修正来自SD费米子引起的辐射修正.虽然单代SD费米子在完整的$Z_2$对称性下是奇数,但不能解释W玻色子质量异常,同时与DM现象学一致,但两代SD费米子可以做到这一点,其中较重的一代在W质量校正中起主导作用,较轻的一代在DM现象学中起作用。此外,如果包含一个$Z_2$ -奇单重标量,这种多代SD费米子也可以辐射产生轻中微子质量。

英文摘要:

Motivated by the recently reported anomaly in W boson mass by the CDF collaboration with $7σ$ statistical significance, we consider a singlet-doublet (SD) Majorana fermion dark matter (DM) model where the required correction to W boson mass arises from radiative corrections induced by SD fermions. While a single generation of SD fermions, odd under an unbroken $Z_2$ symmetry, can not explain the W boson mass anomaly while being consistent with DM phenomenology, two generations of SD fermions can do so with the heavier generation playing the dominant role in W-mass correction and lighter generation playing the role in DM phenomenology. Additionally, such multiple generations of SD fermions can also generate light neutrino masses radiatively if a $Z_2$-odd singlet scalar is included.

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。

↑