Determination of Scanning Efficiencies in Experiments Using Nuclear Emulsion Sheets

TL;DR

This paper presents a method to accurately measure the fraction of background tracks in nuclear emulsion sheet experiments, improving the reliability of particle detection amidst cosmic ray interference.

Contribution

It introduces a novel data-driven approach to determine the background track fraction in nuclear emulsion experiments, enhancing measurement accuracy.

Findings

Method reliably measures background track fraction

Improves particle detection accuracy

Reduces background interference effects

Abstract

During their exposure, nuclear emulsion sheets detect both tracks from experiment-related particles, as well as a considerable amount of background tracks, mainly due to cosmic rays. Unless the exposure has been fairly short, it is therefore fairly likely that a fraction of the tracks that have been identified as belonging to the particles the experiment is interested in, are really due to background. A method, which allows to measure this fraction reliably directly from the data, is described.