RT Journal Article T1 Reliability of Monte Carlo event generators for gamma-ray dark matter searches A1 López Maroto, Antonio A1 Cruz Dombriz, Álvaro de la A1 Ruiz Cembranos, José Alberto A1 Gammaldi, Viviana A1 Lineros, Roberto A. AB 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. PB Springer SN 1029-8479 YR 2013 FD 2013-09-13 LK https://hdl.handle.net/20.500.14352/33589 UL https://hdl.handle.net/20.500.14352/33589 LA eng NO This work was supported by UCM FPI grants G/640/400/8000 (2011 Program), the Spanish MINECO projects numbers FIS2011 23000, FPA2011-27853-C02-01, FPA2011-22975 and MULTIDARK CSD2009-00064 (Consolider-Ingenio 2010 Programme). AdlCD also acknowledges _nancial support from Marie Curie - Beatriu de Pinos contract BP-B00195, Generalitat de Catalunya and ACGC, University of Cape Town. RL also acknowledges Prometeo/2009/091 (Generalitat Valenciana) and EU ITN UNILHC PITN-GA-2009-237920 _nancial support. NO UCM FPI NO MINECO, España NO Generalitat de Catalunya NO Marie Curie - Beatriu de Pinos NO ACGC, University of Cape Town NO Generalitat Valenciana NO EU ITN UNILHC NO Consolider-Ingenio MULTIDARK DS Docta Complutense RD 12 abr 2025