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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Bibliographic Details
Authors: López Maroto, Antonio, Cruz Dombriz, Álvaro de la, Ruiz Cembranos, José Alberto, Gammaldi, Viviana, Lineros, Roberto A.
Format: article
Publication Date:2013
Country:España
Institution:Universidad Complutense de Madrid (UCM)
Repository:Docta Complutense
Language:English
OAI Identifier:oai:docta.ucm.es:20.500.14352/33589
Online Access:https://hdl.handle.net/20.500.14352/33589
Access Level:Open access
Keyword:53
Galactic-Center
Models
Halos
Contraction
Simulation
Telescope
Direction
Baryons
Física (Física)
22 Física
Description
Summary: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 mportant role in misunderstanding dark matter signals.

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