Regular Article – Theoretical Physics
Flavor anomalies from asymptotically safe gravity
National Centre for Nuclear Research, Pasteura 7, 02-093, Warsaw, Poland
Accepted: 20 March 2021
Published online: 1 April 2021
We use the framework of asymptotically safe quantum gravity to derive predictions for scalar leptoquark solutions to the and 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 anomalies predicts a leptoquark with the mass of 4–7 , entirely within the reach of a future hadron-hadron collider with . Conversely, in the case of the 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.
© The Author(s) 2021
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