Modified hadronic interactions and the future of UHECR observations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00635524" target="_blank" >RIV/68378271:_____/25:00635524 - isvavai.cz</a>

Result on the web

<a href="https://pos.sissa.it/484/046/pdf" target="_blank" >https://pos.sissa.it/484/046/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22323/1.484.0046" target="_blank" >10.22323/1.484.0046</a>

Result language

angličtina

Original language name

Modified hadronic interactions and the future of UHECR observations

Original language description

Data from multiple experiments suggest that the current interaction models used in Monte Carlo simulations do not correctly reproduce the hadronic interactions in air showers produced by ultrahigh-energy cosmic rays (UHECR). We have created a large library of UHECR simulations where the interactions at the highest energies are slightly modified in various ways – but always within the constraints of the accelerator data, without any abrupt changes with energy and without assuming any specific mechanism or dramatically new physics at the ultra-high energies. Recent results of the Pierre Auger Observatory indicate a need for a change in the prediction of the models for both the muon content at ground and the depth of the maximum of longitudinal development of the shower. In our parameter space, we find combinations of modifications that are in agreement with this analysis, however a consistent description of UHECR showers remains elusive. Our library however provides a realistic representation of the freedom in the modeling of the hadronic interactions and offers an opportunity to quantify uncertainties of various predictions. This can be particularly valuable for the design of future observatories where hadronic models are often used as input for the prediction of the performance. We demonstrate this powerful capability on several selected examples

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of Science

ISBN

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ISSN

1824-8039

e-ISSN

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Number of pages

8

Pages from-to

046

Publisher name

Sissa Medilab srl

Place of publication

Trieste

Event location

Malargüe

Event date

Nov 17, 2024

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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