A short comment on OPERA neutrino velocity measuerement

TL;DR

This paper discusses a potential systematic error in the OPERA neutrino velocity measurement, emphasizing that the key parameter is a time shift, not a true distribution parameter, which affects data analysis conclusions.

Contribution

It highlights the importance of correctly interpreting the b4t parameter as a systematic shift rather than a statistical parameter in the OPERA experiment.

Findings

b4t should be treated as a systematic effect, not a distribution parameter.

Misinterpretation of b4t can lead to incorrect conclusions about neutrino velocity.

The analysis impacts the validity of the OPERA measurement results.

Abstract

In this report a potential problem in the data analysis of the OPERA experiment is discussed: the main issue is that the quantity "\partialt" used in the maximum likelihood procedure is not a "true" parameter of the parent-distribution (called PDF in the apaper) but a shift in the x-axis (time scale). This means that the quantity "\partialt" has to be considered only as systematic effect these error in not simply deducible from a gaussian distribution as stated.