Fundamental nuclear structure symmetries in double beta decay processes
نویسندگان
چکیده
منابع مشابه
Nuclear structure and double beta decay
Study of the neutrinoless double beta decay, 0νββ, includes a variety of problems of nuclear structure theory. They are reviewed here. The problems range from the mechanism of the decay, i.e. exchange of the light Majorana neutrino neutrino vesus the exchange of some heavy, so far unobserved particle. Next, the proper expressions for the corresponding operator are described that should include ...
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The decay rate of the 2v double beta decay is calculated. The effects of pairing, static quadrupole deformation, spin-isospin polarization, and the .6.33 isobar admixtures on the nuclear matrix elements are studied and the relation of the 2v {3{3 rate and the {3and f3+ strength is stressed. In agreement with other calculations, we predict a faster decay rate than has been observed experimentall...
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Study of the neutrinoless ββ decay allows us to put a stringent limit on the effective neutrino Majorana mass, a quantity of fundamental importance. To test our ability to evaluate the nuclear matrix elements that govern the decay rate, it is desirable to be able to describe the allowed two-neutrino decay. It is argued that only low-lying virtual intermediate states are important for that proce...
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— Comprehensive description of the phenomenology of the ββ decay is given, with emphasis on the nuclear physics aspects. After a brief review of the neutrino oscillation results and of motivation to test the lepton number conservation, the mechanism of the 0νββ is discussed. Its relation to the lepton flavor violation involving charged leptons and its use as a diagnostic tool of the 0νββ mechan...
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Since the fall of parity in electroweak interactions the discrete transformations of parity, charge conjugation and time reversal are under close scrutiny for any sign of deviation from maximality where symmetry breaking seems to be complete (like P violation in β decay) and for any sign of symmetry breaking when this has not yet been observed (like T violation in
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ژورنال
عنوان ژورنال: HNPS Proceedings
سال: 2020
ISSN: 2654-0088,2654-007X
DOI: 10.12681/hnps.2792