Uncertainties in the 0νββ-decay nuclear matrix elements
نویسندگان
چکیده
منابع مشابه
On Nuclear Matrix Element Uncertainties in Short Range 0νββ Decay Neutrinoless Double Beta Decay
The evaluation of short range contributions to neutrinoless double beta decay has been challenged due to critics of the ansatz of the nuclear matrix element calculations. We comment on the critics and uncertainties of these calculations and the effect on the derived limits. A Z+2 X + 2e − (1) has been proven to be one of the most sensitive tools to search for particle physics beyond the standar...
متن کاملAnatomy of the 0νββ nuclear matrix elements
Fedor Šimkovic,1,* Amand Faessler,1 Vadim Rodin,1 Petr Vogel,2 and Jonathan Engel3 1Institute für Theoretische Physik der Universität Tübingen, D-72076 Tübingen, Germany 2Kellogg Radiation Laboratory and Physics Department, Caltech, Pasadena, California 91125, USA 3Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599-3255, USA (Received 9 October ...
متن کاملRelation between the 2νββ and 0νββ nuclear matrix elements
A formal relation between the GT part of the nuclear matrix elements M0ν GT of 0νββ decay and the closure matrix elements M2ν cl of 2νββ decay is established. This relation is based on the integral representation of these quantities in terms of their dependence on the distance r between the two nucleons undergoing transformation. We also discuss the difficulties in determining the correct value...
متن کاملRelation between the 0νββ and 2νββ nuclear matrix elements reexamined
We show that the dominant Gamow-Teller part, M GT, of the nuclear matrix element governing the neutrinoless ββ decay is related to the matrix element M cl governing the allowed two-neutrino ββ decay. That relation is revealed when these matrix elements are expressed as functions of the relative distance r between the pair of neutrons that are transformed into a pair of protons in the ββ decay. ...
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The measured occupancies of valence orbits in 76Ge and 76Se are used as a guideline for modification of the effective mean field energies that results in better description of these quantities. With them, in combination with the self-consistent renormalized quasiparticle random phase approximation (SRQRPA) method that ensures conservation of the mean particle number in the correlated ground sta...
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ژورنال
عنوان ژورنال: Czechoslovak Journal of Physics
سال: 2006
ISSN: 0011-4626,1572-9486
DOI: 10.1007/s10582-006-0113-7