Speaker
Wen-Feng Duan
(Central China Normal University)
Description
The recently updated measurements from LHCb have strengthened the deviation of $R_{K}$, implying a stronger hint at new physics beyond the Standard Model. We show in this paper that, the long-standing $R_{K^{(\ast)}}$ anomalies can be explained by Dirac neutrinos embedded in a two-Higgs-doublet model. The explanation induces a thermalized right-handed Dirac neutrino in the early Universe, which contributes as extra radiation to the Hubble expansion and prompts a shift of the effective neutrino number, $N_{eff}$. In mimicking the favored scenarios for solving the Hubble ($H_0$) tension, we show that the simultaneous explanation of $R_{K^{(\ast)}}$ and $H_0$ via one-flavor right-handed Dirac neutrino can be readily tested or ruled out by the upcoming $H_0$ confirmation.
| Presentation type | Oral |
|---|
Primary author
Wen-Feng Duan
(Central China Normal University)
Co-authors
Shaoping Li
(CCNU)
Prof.
Xin-Qiang Li
(Central China Normal University)
亚东 杨
(Central China Normal University)
