NME2023

Double Beta Decay : Thery and Experiment


NME2023, 21st-22nd, Dec., 2023
Research Center for Nuclear Physics

First Bulletin

NME2023 announcement (in English)

Dear Colleagues,

The international workshop on the theoretical and experimental approaches for nuclear matrix elements of double-beta decay will be held on December 21 and 22, 2023 in Research Center for Nuclear Study, Osaka University, Japan.

The discovery of the neutrinoless double-beta (0νββ) decay gives the proof of the existence of a Majorana neutrino, which is a decisive clue to solving the mystery of the birth of the matter-prevailing universe. The 0νββ decay is also quite important for determining the ordering structure of the neutrino eigen masses. In the recent future plans for the 0νββ decay experiments, the searches for the decay in the inverted ordering region (the mass of 10-20 meV) and the normal ordering region (the mass of several meV) are proposed. The prediction of the nuclear matrix element (NME) is necessary for determining the effective neutrino mass from the measured half-life of the decay. This is a challenging task for theoretical nuclear physics because the 0νββ decay is a qualitatively unprecedented and extremely rare phenomenon. Currently, the calculated NMEs are distributed in a broad ratio range of 2–3.

The aim of this workshop is to improve the accuracy of the theoretical NME calculation. Close cooperation between the experimentalists and the theorists is necessary to achieve this aim. A question is what measurements can be important inputs to the NME calculation. The discussions are expected on the requests and suggestions for new experimental measurements.

The discussion will also be made on the measurement results of the phenomena related to the 0νββ decay as the precise measurement of the half-life of the 2νββ decay, the double Gamow-Teller transition strength using the double-charge exchange reaction, and other physical quantities for obtaining important insight through the measurements of the nuclear reactions using accelerators.

Workshop information
Program
Decemver 21 (Thu.)
December 22 (Fri.)

Conference Site
The workshop site is RCNP. Further information is available in the following web site:
https://www.rcnp.osaka-u.ac.jp/~dbd/WS/nme23/index.html

Call for Contributions
Abstracts of contributed papers will be accepted through the workshop registration page. Please visit the following URL;
https://www.rcnp.osaka-u.ac.jp/~dbd/WS/nme23/index.html?InputContents=Reg


We look forward to seeing you in Osaka in December 2023.

Best regards,
Organizers

Host Institutes:
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