Work

U(1) mixing and the weak gravity conjecture

Year: 2020

Type: article

Abstract: Tiny values for gauge couplings of dark photons allow to suppress their kinetic mixing with ordinary photons. We point out that the weak gravity conjecture predicts consequently low ultraviolet cut-offs where new degrees of freedom might appear. In particular, a mixing angle of $$\mathcal {O}(10^{-15})$$ O ( 10 - 15 ) , required in order to fit the excess reported by XENON1T, corresponds to new physics below $$\mathcal {O}(100)$$ O ( 100 ) TeV, thus accessible at a future circular collider. We show that possible realizations are provided by compactifications with six large extra dimensions and a string scale of order $$\mathcal {O}(100)$$ O ( 100 ) TeV.

Source: The European Physical Journal C

DOI: 10.1140/epjc/s10052-020-08691-4

Authors: Karim Benakli, Carlo Branchina, Gaëtan Lafforgue-Marmet

Institutions: Centre National de la Recherche Scientifique, Sorbonne Université, Laboratoire de Physique Théorique et Hautes Energies

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funder: Agence Nationale de la Recherche

Award: Tools for automatic Higgs calculations in general theories