Reliability of Monte Carlo event generators for gamma ray dark matter searches

We study the differences in the gamma ray spectra simulated by four Monte Carlo event generator packages developed in particle physics. Two different versions of PYTHIA and two of HERWIG are analyzed, namely PYTHIA 6.418 and HERWIG 6.5.10 in Fortran and PYTHIA 8.165 and HERWIG 2.6.1 in C++. For all...

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Veröffentlicht in:	arXiv.org 2013-08
Hauptverfasser:	Cembranos, J A R, de la Cruz-Dombriz, A, Gammaldi, V, Lineros, R A, Maroto, A L
Format:	Artikel
Sprache:	eng
Schlagworte:	Computer simulation Dark matter FORTRAN Gamma ray spectra Gamma rays Monte Carlo simulation Particle physics Physics - Cosmology and Nongalactic Astrophysics Physics - High Energy Astrophysical Phenomena Physics - High Energy Physics - Phenomenology
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Beschreibung
Zusammenfassung:	We study the differences in the gamma ray spectra simulated by four Monte Carlo event generator packages developed in particle physics. Two different versions of PYTHIA and two of HERWIG are analyzed, namely PYTHIA 6.418 and HERWIG 6.5.10 in Fortran and PYTHIA 8.165 and HERWIG 2.6.1 in C++. For all the studied channels, the intrinsic differences between them are shown to be significative and may play an important role in misunderstanding dark matter signals.
ISSN:	2331-8422
DOI:	10.48550/arxiv.1305.2124