First application of the continuum-QRPA to the description of the double beta decay

✍ Scribed by Vadim Rodin; Amand Faessler

• Book ID: 104089397
• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 242 KB
• Volume: 57
• Category: Article
• ISSN: 0146-6410
• DOI: 10.1016/j.ppnp.2006.01.007

✦ Synopsis

A continuum-QRPA approach to calculation of the 2νββ-and 0νββ-amplitudes has been formulated. For 130 Te, a regular suppression (about 20%) of the high-multipole contributions to the 0νββ-amplitude has been found which can be associated with additional ground state correlations appearing from the transitions to collective states in the continuum. At the same time, the total calculated 0νββ-amplitude for 130 Te gets suppressed by about 20% compared to the result of the usual, discretized QRPA.