Systematic Differences due to High Energy Hadronic Interaction Models in Air Shower Simulations in the 100 GeV-100 TeV Range

Abstract

The predictions of hadronic interaction models for cosmic-ray induced air showers contain inherent uncertainties due to limitations of available accelerator data and theoretical understanding in the required energy and rapidity regime. Differences between models are typically evaluated in the range appropriate for cosmic-ray air shower arrays ($10^{15}$-$10^{20}$ eV). However, accurate modelling of charged cosmic-ray measurements with ground based gamma-ray observatories is becoming more and more important. We assess the model predictions on the gross behaviour of measurable air shower parameters in the energy (0.1-100 TeV) and altitude ranges most appropriate for detection by ground-based gamma-ray observatories. We go on to investigate the particle distributions just after the first interaction point, to examine how differences in the micro-physics of the models may compound into differences in the gross air shower behaviour. Differences between the models above 1 TeV are typically less than 10%. However, we find the largest variation in particle densities at ground at the lowest energy tested (100 GeV), resulting from striking differences in the early stages of shower development.

9 pages, 6 figures. Published by Phys Rev D

References in corpus (10)

• Observations of the Crab Nebula with H.E.S.S
• The major upgrade of the MAGIC telescopes, Part II: A performance study using observations of the Crab Nebula
• Extended gamma-ray sources around pulsars constrain the origin of the positron flux at Earth
• Background Modelling in Very-High-Energy gamma-ray Astronomy
• The Spectrum and Morphology of the Fermi Bubbles
• Science with the Cherenkov Telescope Array
• All-particle cosmic ray energy spectrum measured by the HAWC experiment from 10 to 500 TeV
• Measurement of Cosmic-ray Electrons at TeV Energies by VERITAS
• Measurement of inclusive forward neutron production cross section in proton-proton collisions at $\sqrt{\mathrm{s}}=13\mathrm{TeV}$ with the LHCf Arm2 detector
• Potential for measuring the longitudinal and lateral profile of muons in TeV air showers with IACTs

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• Effect of the uncertainty in the hadronic interaction models on the estimation of the sensitivity of the Cherenkov Telescope Array
• Sub-TeV hadronic interaction model differences and their impact on air showers
• Background rejection using image residuals from large telescopes in imaging atmospheric Cherenkov telescope arrays
• A novel approach to optimizing the image cleaning performance of Imaging Atmospheric Cherenkov Telescopes: Application to a time-based cleaning for H.E.S.S
• Analysis Methods for Gamma-ray Astronomy