Analysis of one hadron rich event

TL;DR

This paper classifies a hadron-rich event as an interaction event, estimating its invariant mass and analyzing its composition using simulations and microscopic observations, contributing to understanding high-energy cosmic ray showers.

Contribution

It presents a detailed classification and analysis of a hadron-rich event, including energy estimation, particle composition, and discrimination criteria, based on simulations and microscopic observations.

Findings

Event estimated invariant mass ~61 GeV/c^2

Event composed of 25 gamma rays, 36 hadrons, 1 leading hadron

Consistent physical quantities across scenarios

Abstract

In this report arguments are presented to classify this hadron rich event as an interaction event and the consequences of this statement. For instance the total invariant mass would be estimated as ~ 61 GeV/c^2 and the pair of hadrons used for height estimation have invariant mass = 2.2 GeV/c^2. Besides, tables showing the parametric and non-parametric analysis resulting in a criteria table and the resulting tables for the discrimination of $\gamma$ or hadron induced showers were presented at the 16th ISVHECRI, held at Batavia, USA. The main point of hadron rich and Centauro events is the identification of the nature of the observed showers. The identification and energy determination of $\gamma$ or hadron induced showers was made using 2 simulations. Complemented with the observation of photosensitive material under microscope it was determined that the event C16S086I037 could be classified as a hadron rich event. We used 10 reasonable scenarios for $\gamma$/hadron discrimination and obtained that the event is composed of 25 $\gamma$'s, 36 hadrons and 1 surviving and leading hadron. All these scenarios were reported at the 14th ISVHECRI, held in Weihai, China and resulted in rather constant values of physical quantities, like the mean transverse momentum of hadrons, $<P_{T_{h}}>$, and the mean inelasticity of $\gamma$-ray, $<k_{\gamma}>$.