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• W4311521000 endingPage "033102" @default.
• W4311521000 startingPage "033102" @default.
• W4311521000 abstract "The updated measurements from the LHCb and SH0ES collaborations have respectively strengthened the deviations of the ratio $R_{K}$ in rare semi-leptonic $B$-meson decays and the present-day Hubble parameter $H_0$ in the Universe, implying tantalizing hints of new physics beyond the Standard Model. In this paper, we consider a simple flavor-specific two-Higgs-doublet model, where the long-standing $R_{K^{(*)}}$ anomalies can be addressed by a one-flavor right-handed neutrino. One of the intriguing predictions resulting from the parameter space for the $R_{K^{(*)}}$ resolution under flavor- and collider-physics constraints points toward a shift of the effective neutrino number, $Delta N_{rm eff}=N_{rm eff}-N_{rm eff}^{rm SM}$, as favored to ease the $H_0$ tension. Depending on whether the neutrino is of Dirac or of Majorana type, we show that the resulting shift is $Delta N_{rm eff}simeq 1.0$ for the former and $Delta N_{rm eff}simeq 0.5$ for the latter case, respectively. While the Dirac case is disfavored by the CMB polarization measurements, the Majorana solution is consistent with the recent studies via a combined data set from various sources. Consequently, such a simple flavor-specific two-Higgs-doublet model provides a link between the $R_{K^{(*)}}$ anomalies and the $H_0$ tension, which in turn can be readily verified or falsified by the upcoming measurements." @default.
• W4311521000 created "2022-12-26" @default.
• W4311521000 creator A5011419627 @default.
• W4311521000 creator A5053816897 @default.
• W4311521000 creator A5062802976 @default.
• W4311521000 creator A5078785146 @default.
• W4311521000 date "2023-03-01" @default.
• W4311521000 modified "2023-10-15" @default.
• W4311521000 title "Linking anomalies to Hubble tension via a single right-handed neutrino*" @default.
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