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

Debasish Borah; Satyabrata Mahapatra; Narendra Sahu

doi:10.1016/j.physletb.2022.137196

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arXiv · 2204.09671

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

Debasish Borah·Satyabrata Mahapatra·Narendra Sahu

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Abstract

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.

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Debasish Borah, Satyabrata Mahapatra, Narendra Sahu. 2022-05-24. Singlet-Doublet Fermion Origin of Dark Matter, Neutrino Mass and W-Mass Anomaly. https://doi.org/10.1016/j.physletb.2022.137196

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