English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

New Monte-Carlo simulation of the HEIDELBERG-MOSCOW double beta decay experiment

MPS-Authors
/persons/resource/persons30421

Dörr,  C.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30685

Klapdor-Kleingrothaus,  H. V.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Dörr, C., & Klapdor-Kleingrothaus, H. V. (2003). New Monte-Carlo simulation of the HEIDELBERG-MOSCOW double beta decay experiment. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 513(3), 596-621.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-81AE-3
Abstract
Based on the Monte-Carlo package GEANT4 a new simulation of the complete background spectrum of the HEIDELBERG-MOSCOW experiment which operates five enriched 76Ge detectors in a low background environment in the Gran Sasso underground laboratory was performed. The resulting background model is used to evaluate the signal of the two neutrino accompanied double beta decay with a statistical significance of 41.57 kgyear resulting in a half-life of T1/2=(1.74±0.01(stat)-0.16+0.18 (syst))×1021 years. Using GEANT4 a simulation of elastic and inelastic neutron reactions has been performed for the first time and is used to estimate the contribution of the neutron flux in the Gran Sasso underground laboratory to the experimental spectrum. The composition of the background in the energy range from 2000 to 2100 keV around the Q value for neutrinoless double beta decay is discussed in some detail.