https://doi.org/10.1140/epjc/s10052-021-09072-1
Regular Article – Theoretical Physics
Flavor anomalies from asymptotically safe gravity
National Centre for Nuclear Research, Pasteura 7, 02-093, Warsaw, Poland
Received:
16
July
2020
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
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3
