TY - JOUR
T1 - Dynamically vanishing Dirac neutrino mass from quantum scale symmetry
AU - Eichhorn, Astrid
AU - Held, Aaron
N1 - Funding Information:
The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Aaron Held reports financial support was provided by German Academic Exchange Service. Astrid Eichhorn reports financial support was provided by Villum Foundation.We thank Reinhard Alkofer, Carlos Nieto, Roberto Percacci and Markus Schröfl for discussions. A. E. is supported by a research grant (29405) from Villum Fonden. The work leading to this publication was supported by the PRIME programme of the German Academic Exchange Service (DAAD) with funds from the German Federal Ministry of Education and Research (BMBF). A. H. acknowledges support by the Deutsche Forschungsgemeinschaft (DFG) under Grant No. 406116891 within the Research Training Group RTG 2522/1.
PY - 2023/11
Y1 - 2023/11
N2 - We present a mechanism which drives Dirac neutrino masses to tiny values along the Renormalization Group flow, starting from an asymptotically safe ultraviolet completion of the third generation of the Standard Model including quantum gravity. At the same time, the mechanism produces a mass-splitting between the neutrino and the quark sector and also generates the mass splitting between top and bottom quark. The mechanism hinges on the hypercharges of the fermions and produces a tiny neutrino Yukawa coupling, because the right-handed neutrino is sterile and does not carry hypercharge.
AB - We present a mechanism which drives Dirac neutrino masses to tiny values along the Renormalization Group flow, starting from an asymptotically safe ultraviolet completion of the third generation of the Standard Model including quantum gravity. At the same time, the mechanism produces a mass-splitting between the neutrino and the quark sector and also generates the mass splitting between top and bottom quark. The mechanism hinges on the hypercharges of the fermions and produces a tiny neutrino Yukawa coupling, because the right-handed neutrino is sterile and does not carry hypercharge.
U2 - 10.1016/j.physletb.2023.138196
DO - 10.1016/j.physletb.2023.138196
M3 - Journal article
AN - SCOPUS:85173264245
SN - 0370-2693
VL - 846
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 138196
ER -