B(E2) Evaluation for 0+ to 2+ Transitions in Even-Even Nuclei

TL;DR

This paper presents an evaluated compilation of B(E2) transition probabilities for 0+ to 2+ states in even-even nuclei, incorporating recent experimental data, shell model calculations, and evaluation policies, with relevance to double-beta decay research.

Contribution

It provides a comprehensive, updated evaluation of B(E2) values, including new data, systematic analysis, and shell model calculations, specifically targeting nuclei relevant to double-beta decay.

Findings

Recommended B(E2) values for key nuclei are presented.

Evaluation procedures and data systematics are discussed.

Future plans for completing the evaluation are outlined.

Abstract

A collaborative study by Brookhaven-McMaster-Central Michigan is underway to evaluate B(E2)$\uparrow$ for 0$^{+}_{1}$ $\rightarrow$ 2$^{+}_{1}$ transitions. This work is a continuation of a previous USNDP evaluation and has been motivated by a large number of recent measurements and nuclear theory developments. It includes an extended compilation, data evaluation procedures and shell model calculations. The subset of B(E2)$\uparrow$ recommended values for nuclei of relevance to the double-beta decay problem is presented, and evaluation policies of experimental data and systematics are discussed. Future plans for completion of the B(E2;0$^{+}_{1}$ $\rightarrow$ 2$^{+}_{1}$) evaluation project are also described.