Extended Data Fig. 5: Limits on the dimension-five new physics operator.
From: Search for quantum gravity using astrophysical neutrino flavour with IceCube
The hatched region is the limit obtained from the atmospheric neutrino data analysis on \({{{\rm{Re}}}}({\mathring{a}}_{\mu \tau }^{(5)})\)15. Limits determined by Bayes factors > 10 (dashed lines) and > 31.6 (solid lines) are presented as a function of the assumed astrophysical neutrino flavour ratio at the production source. The leftmost scenario is νμ dominant (0: 1: 0)S and the rightmost is νe dominant (1: 0: 0)S. The preferred scenario corresponds to (1/3: 2/3: 0)S (dashed vertical line). Limits on \({{{\rm{Re}}}}({\mathring{a}}_{ee}^{(5)})\) on (orange), \({{{\rm{Re}}}}({\mathring{a}}_{e\mu }^{(5)})\) (red), \({{{\rm{Re}}}}({\mathring{a}}_{e\tau }^{(5)})\) (green), \({{{\rm{Re}}}}({\mathring{a}}_{\mu \mu }^{(5)})\) (yellow), \({{{\rm{Re}}}}({\mathring{a}}_{\mu \tau }^{(5)})\) (purple), and \({{{\rm{Re}}}}({\mathring{a}}_{\tau \tau }^{(5)})\) (blue) are shown.
