$R_{K^{(\ast )}}^{\nu }$ and non-standard neutrino interactions

Abstract

We discuss the modes $B\to K^{(\ast )}\nu \bar{\nu }$ in the context of non-standard neutrino interactions that add incoherently to the SM rates. We consider two scenarios: an additional light neutrino; and neutrino lepton flavour violation. We find that an additional light neutrino that interacts with SM fields via a non-universal $Z^{\prime }$ can increase $R_{K^{(\ast )}}^{\nu }$ by up to a factor of two without conflicting with $B_s-{\bar{B}}_s$ mixing. This model then predicts rates for $B_s\to {\tau }^{+}{\tau }^{-}$ up to six times larger than the SM. In the context of neutrino lepton flavour violation mediated by leptoquarks we find that the current experimental upper bounds on $R_{K^{(\ast )}}^{\nu }$ are already more constraining than direct bounds from $B_s\to \tau \ell$ and $B\to K^{(\ast )}\tau \ell$ modes for $\ell =e,\mu$.

fixed typo in Eqs. 7,8

References in corpus (9)

• The trouble with $H_0$
• Two-Loop Electroweak Corrections for the K -> pi nu anti-nu Decays
• New strategies for New Physics search in B -> K* nu anti-nu, B -> K nu anti-nu and B -> X(s) nu anti-nu decays
• $\Delta M_s$ theory precision confronts flavour anomalies
• $B_s-{\bar{B}}_s$ Mixing constraints on FCNC and a non-universal $Z^{\prime }$
• Consequences of R-Parity violating interactions for anomalies in $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$ and $b\to s{\mu }^{+}{\mu }^{-}$
• Implications of $b\to s\mu \mu$ Anomalies for Future Measurements of $B\to K^{(\ast )}\nu \bar{\nu }$ and $K\to \pi \nu \bar{\nu }$
• Hints of Natural Supersymmetry in Flavor Anomalies?
• Charged-lepton-flavor violation in $|\Delta S|=1$ hyperon decays

Cited by in corpus (13)

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• $B$ meson anomalies and large $B^{+}\to K^{+}\nu \bar{\nu }$ in non-universal $U(1{)}^{\prime }$ models
• When Energy Goes Missing: New Physics in $b\to s\nu \nu$ with Sterile Neutrinos
• FCNC $B$ and $K$ Meson Decays with Light Bosonic Dark Matter
• $B\to K\nu \bar{\nu }$, MiniBooNE and muon $g-2$ anomalies from a dark sector
• Disentangling new physics in $K\to \pi \bar{\nu }\nu$ and $B\to K(K^{\ast })\bar{\nu }\nu$ observables
• The first limit on invisible decays of $B_s$ mesons comes from LEP
• Consequences of $b\to s{\mu }^{+}{\mu }^{-}$ anomalies on $B\to K^{(\ast )}\nu \bar{\nu }$, $B_s\to (\eta ,{\eta }^{\prime })\nu \bar{\nu }$ and $B_s\to \varphi \nu \bar{\nu }$ decay observables
• FCNC charmed-hadron decays with invisible singlet particles in light of recent data
• Charged lepton flavor violating decays with a pair of light dark matter and muonium invisible decay
• A Tale of Invisibility: Constraints on New Physics in $b\to s\nu \nu$
• Lepton Universality Violation by Kaluza-Klein Neutrinos in $b\to sll$ transition