Search For Neutrinoless Double Beta Decay With Enriched 76Ge 1990-2003 -- HEIDELBERG-MOSCOW-Experiment

Details Search For Neutrinoless Double Beta Decay With Enriched 76Ge 1990-2003 -- HEIDELBERG-MOSCOW-Experiment Search For Neutrinoless Double Beta Decay With Enriched 76Ge 1990-2003 -- HEIDELBERG-MOSCOW-Experiment

2004-04-06

arxiv.org/abs/hep-ph/0404062v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

INFN, Laboratori Nazionali del Gran Sasso, Annual Report 2003 (2004)

Scientific paper

The HEIDELBERG-MOSCOW experiment, which is the most sensitive double beta decay experiment since ten years has been regularly continued until end of November 2003. An analysis of the data has been performed already until May 20, 2003. The experiment yields now, on a 4.2 sigma level, evidence for lepton number violation and proves that the neutrino is a Majorana particle.It further shows that neutrino masses are degenerate. In addition it puts several stringent constraints on other physics beyond the Standard Model. Among others it opens the door to test various supersymmetric theory scenarios, for example it gives the sharpest limit on the parameter lambda'_{111} in the R-parity violating part of the superpotential, and gives information on the splitting of the sneutrino-antisneutrino system. The result from the HEIDELBERG-MOSCOW experiment is consistent with recent results from CMB investigations, with high energy cosmic rays, with the result from the g-2 experiment and with recent theoretical work. It is indirectly supported by the analysis of other Ge double beta experiments. Recent criticism of various kind has been shown to be wrong, among others by measurements performed in 2003 with a 214Bi source (226Ra), by simulation of the background in the range of Q_(beta-beta) by GEANT4, and by deeper investigation of statistical features such as sensitivity of peak search, and relevance of width of window of analysis.

Affiliated with

Also associated with

No associations

Rating

Search For Neutrinoless Double Beta Decay With Enriched 76Ge 1990-2003 -- HEIDELBERG-MOSCOW-Experiment does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Search For Neutrinoless Double Beta Decay With Enriched 76Ge 1990-2003 -- HEIDELBERG-MOSCOW-Experiment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Search For Neutrinoless Double Beta Decay With Enriched 76Ge 1990-2003 -- HEIDELBERG-MOSCOW-Experiment will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-243733