Comment on "First Observation of Multiple Transverse Wobbling Bands of Different Kinds in $^{183}$Au [Phys. Rev. Lett. 125, 132501 (2015)]"

TL;DR

This paper critically examines the experimental evidence for transverse wobbling bands in $^{183}$Au, questioning the previous assignment due to underestimated uncertainties and ambiguous transition character.

Contribution

It provides a reanalysis of the experimental data, highlighting the uncertainties and challenging the previous interpretation of wobbling bands in $^{183}$Au.

Findings

Uncertainties in the data were underestimated.

The M1 character of transitions cannot be excluded.

The wobbling assignment remains questionable.

Abstract

In [S. Nandi et al., Phys. Rev. Lett. 125, 132501 (2020)] two transverse wobbling bands were reported in $^{183}$Au. The critical experimental proof for this assignment is the E2 dominated linking transitions between the wobbling and normal bands, which are supported by fitting the measured DCO ratio and polarization results. However, the uncertainties are significantly underestimated according to an analysis on the statistical error. With reasonable error, the mixing ratios cannot be exclusively decided, and the M1 dominated character cannot be excluded, indicating that the wobbling assignment is still questionable.