Comment on OPERA neutrino velocity measurement

TL;DR

This paper critiques the data analysis method used in the OPERA neutrino velocity experiment, highlighting that the parameter  used in the likelihood procedure is a systematic shift rather than a true statistical parameter, which questions the validity of the original results.

Contribution

It clarifies that the  parameter in OPERA's analysis is a systematic shift, not a true distribution parameter, challenging previous interpretations of the data.

Findings

 is a systematic effect, not a true parameter.

The error cannot be simply modeled as Gaussian.

This insight impacts the interpretation of OPERA's 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 \partial t used in the maximum likelihood procedure is not a "true" parameter of the parent-distribution (called PDF in the paper) but a shhift in the x-axis (time scale). This means that the quantity \partial t has to be considered only as a systematic effect these error is not simply deducible from a gaussian distribution as stated.