Test of the hadronic interaction models at around *10 TeV with Tibet EAS core data

TL;DR

This study tests various hadronic interaction models at around 10 TeV using data from the Tibet EAS array, providing preliminary validation results for models like QGSJET, SIBYLL, and EPOS.

Contribution

First application of combined YAC-I and Tibet-III data to evaluate hadronic interaction models at 10 TeV energy scale.

Findings

Preliminary validation of hadronic models at 10 TeV.

Comparison of model predictions with observed air-shower core data.

Insights into model accuracy for high-energy cosmic ray interactions.

Abstract

A hybrid experiment has been started by AS{\gamma} collaboration at Tibet, China, since May 2009, that consists of a burst-detector-grid (YAC, Yangbajing Air shower Core array) and the Tibet air-shower array (Tibet-III). The first step of YAC, called YAC-I, contains 16 detector units and observes high energy electromagnetic particles in air-shower cores within several meters from the shower axis, and Tibet-III array measures the total energy and the arrival direction of air showers. YAC-I is used to check hadronic interaction models currently used for air-shower simulations such as QGSJET, SIBYLL, EPOS etc. through the multi-parameter measurement in air-shower cores. In this paper, we used a data set collected from May 1st 2009 through February 23rd 2010 by the YAC-I. The effective live time used for the present analysis is 169.65 days. The preliminary results of the interaction model checking at *10 TeV energy region is reported in this paper.