期刊
EUROPEAN PHYSICAL JOURNAL A
卷 27, 期 -, 页码 63-66出版社
SPRINGER
DOI: 10.1140/epja/i2006-08-008-7
关键词
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The leading questions in today neutrino physics concern the transformation properties of neutrinos under charge conjugation, the lepton number conservation hypothesis and the values of neutrino masses. The answers can be obtained if the neutrinoless double beta decay, 0 nu 2 beta, is observed and its rate is measured. The mere observation of the process proves the Majorana nature of neutrinos as well as the violation of the lepton number conservation, while the rate is a sensitive measure of the neutrino mass. The search for this effect at present concerns mainly the double beta(-) decay. This paper describes the recent proposal to search for the neutrinoless radiative double electron capture as an attractive alternative to the double beta(-) decay. It is shown, moreover, that the same information which is expected from the 0 nu 2 beta studies can in principle be also obtained from experiments using intense v, beams produced by radioactive ions decaying in flight (the beta beams).
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