Analysis of the image of pion-emitting sources in source center of mass frame

TL;DR

This paper introduces a method to reconstruct the pion-emitting source function in the source's center-of-mass frame by using energy-difference-selected pion pairs to improve the accuracy of imaging results.

Contribution

The paper proposes a novel approach that reduces energy-time correlation effects in source imaging by selecting pion pairs based on their energy differences.

Findings

The method effectively approximates the real source function.

Comparison shows improved accuracy over traditional imaging techniques.

Results validate the approach using model-based source functions.

Abstract

In this paper, we try a method to extract the image of pion-emitting source function in the center-of-mass frame of source (CMFS). We choose the identical pion pairs according to the difference of their energy and use these pion pairs to build the correlation function. The purpose is to reduce the effect of $\triangle E \triangle t$, thus the corresponding imaging result can tend to the real source function. We examine the effect of this method by comparing its results with real source functions extracted from models directly.