2012 Fiscal Year Final Research Report
Calculation of transition matrix elements of double-beta decay using Skyrme-QRPA
| Project/Area Number |
23840005
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | University of Tsukuba |
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Principal Investigator |
TERASAKI Jun 筑波大学, 数理物質系, 准教授 (50616430)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 原子核 / 理論 / ニュートリノ / ニュートリノレス二重ベータ崩壊 / QRPA |
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| Research Abstract |
We developed a system of programs to calculate transition matrix elements of the neutrinoless double-beta decay for determining the neutrino mass. Calculations have been performed of the ground and excited states necessary around a mass-150 region. The most siginificant achievement is that the overlap of the intermediate states obtained can now be calculated almost exactly. This achievement was enabled by the most advanced computers and has an effect to make the application of the random-phase approximation to the neutrinoless double beta decay more acccurate than before.
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