Flavor anomalies from asymptotically safe gravity

Abstract

We use the framework of asymptotically safe quantum gravity to derive predictions for scalar leptoquark solutions to the $b\to s$ and $b\to c$ flavor anomalies. The presence of an interactive UV fixed point in the system of gauge and Yukawa couplings imposes a set of boundary conditions at the Planck scale, which allows one to determine low-energy values of the leptoquark Yukawa matrix elements. As a consequence, the allowed leptoquark mass range can be significantly narrowed down. We find that a consistent gravity-driven solution to the $b\to s$ anomalies predicts a leptoquark with the mass of 4-7 TeV, entirely within the reach of a future hadron-hadron collider with $\sqrt{s}=100$ TeV. Conversely, in the case of the $b\to c$ anomalies the asymptotically safe gravity framework predicts a leptoquark mass at the edge of the current LHC bounds. Complementary signatures appear in flavor observables, namely the (semi)leptonic decays of B and D mesons and kaons.

39 pages, 6 figures. Added discussion of a trans-Planckian IR fixed point in Section 3.1. Added scenarios of type FPc, corresponding to Gaussian fixed points of the NP couplings. References added

References in corpus (24)

• Exact evolution equation for the effective potential
• Test of lepton universality using $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• B-physics anomalies: a guide to combined explanations
• Search for lepton-universality violation in $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Measurement of the branching ratio of ${\bar{B}}^0\to D^{\ast +}{\tau }^{-}{\bar{\nu }}_{\tau }$ relative to ${\bar{B}}^0\to D^{\ast +}{\ell }^{-}{\bar{\nu }}_{\ell }$ decays with a semileptonic tagging method
• Asymptotic safety in higher-derivative gravity
• Fixed Points of Higher Derivative Gravity
• Ultraviolet properties of f(R)-Gravity
• On the renormalization group flow of f(R)-gravity
• Asymptotically Safe Lorentzian Gravity
• Leptoquark model to explain the $B$-physics anomalies, $R_K$ and $R_D$
• Leptoquark Flavor Patterns & B Decay Anomalies
• 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
• Asymptotic safety in the f(R) approximation
• Top mass from asymptotic safety
• Gauge Dependence of Gravitational Correction to Running of Gauge Couplings
• Global fits to b -> s ll data and signs for lepton non-universality
• The role of the $S_3$ GUT leptoquark in flavor universality and collider searches
• Quantum gravity and charge renormalization
• Cosmological constant and quantum gravitational corrections to the running fine structure constant
• B-meson charged current anomalies: the post-Moriond status
• Phenomenology of $b\to c\tau \bar{\nu }$ decays in a scalar leptoquark model
• Renormalization Group Equations for the CKM matrix
• Vacuum stability in an extended standard model with a leptoquark

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• Search for rare decays of $D^0$ mesons into two muons
• Perturbative Asymptotic Safety and Its Phenomenological Applications
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• Ruling out models of vector dark matter in asymptotically safe quantum gravity
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