Experimental proton-proton correlation function derived for the pp -> ppeta reaction

TL;DR

This paper derives a two-proton correlation function from high-statistics data of the pp -> ppX reaction to estimate the reaction volume size, comparing experimental results with theoretical models.

Contribution

It introduces a new method to extract the proton-proton correlation function for the pp -> ppeta reaction using high-statistics experimental data.

Findings

Correlation function normalized to a point-like source

Estimated the size of the reaction volume

Compared experimental data with theoretical predictions

Abstract

Based on the high statistics data from the pp -> ppX reaction measured by the COSY-11 collaboration [1] we have derived a two-proton correlation function for the production of the ppeta and pp+pions systems. The measured correlation function normalized to the value simulated for a point-like source was compared with a theoretical prediction in order to estimate the size of the reaction volume.