Comment on a recent attempt to explain the `GSI anomaly' by initial-state e.m. spin-rotation coupling

TL;DR

This paper critically examines a recent explanation for the GSI anomaly involving spin-rotation coupling, highlighting that the proposed model's uncertainty vastly exceeds the observed modulation frequency, thus questioning its validity.

Contribution

The paper provides a critical analysis showing that the spin-rotation coupling explanation for the GSI anomaly is inconsistent with experimental data due to large uncertainties.

Findings

Uncertainty in the decay-rate modulation frequency is at least 10^7 Hz.

The proposed spin precession model cannot account for the 1 Hz modulation observed.

The critique challenges the validity of the recent spin-rotation coupling explanation.

Abstract

A recently proposed solution of the `GSI anomaly' by spin precession of the decaying heavy ions in the magnetic field that controls their circular motion at the GSI storage ring [G. Lambiase, G. Papini, G. Scarpetta, PLB 718 (2013) 998, Ann. Phys. 332 (2013) 143] is dubious: the uncertainty in the computed electron-capture decay-rate modulation frequency is at least of order 10E(7) Hz, by far exceeding the 1 Hz modulation frequency reported in the GSI experiment.