Multi-majoron modes for neutrinoless double-beta decay
نویسندگان
چکیده
منابع مشابه
Multi-Majoron Modes for Neutrinoless Double-Beta Decay*
We construct two new classes of models for double beta decay, each of which leads to an electron spectrum which differs from the decays which are usually considered. One of the classes has a spectrum which has not been considered to date, and which is softer than the usual two-neutrino decay of the Standard Model. We construct illustrative models to show how other phenomenological bounds can be...
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We examine in detail the predictions of the charged majoron model, introduced recently by Burgess and Cline, for 0 + → 0 + ββ transitions. The relevant nuclear matrix elements are evaluated, within the quasiparticle random phase approximation, for 76 Ge, 128 Te and 150 Nd nuclei. The calculated transition rates turn out to be much smaller than the experimental upper limits on possible majoron e...
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A new economical model for neutrino masses is proposed in the context of the brane-bulk scenarios for particle physics, where the global B−L symmetry of the standard model is broken spontaneously by a gauge singlet Higgs field in the bulk. This leads to a bulk singlet majoron whose Kaluza-Klein excitations may make it visible in neutrinoless double beta decay for some parameter range if the str...
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The status of the search for neutrinoless double beta decay is reviewed. The effort to reach the sensitivity needed to cover the effective Majorana neutrino mass corresponding to the degenerate and inverted mass hierarchy is described. Various issues concerning the theory (and phenomenology) of the relation between the 0νββ decay rate and the absolute neutrino mass scale are discussed, in parti...
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This paper introduces the neutrinoless double-beta decay the rarest nuclear weak process and describes the status of the research for this transition, both from the point of view of theoretical nuclear physics and in terms of the present and future experimental scenarios. Implications of this phenomenon on crucial aspects of particle physics are briefly discussed. The calculations of the nuclea...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1995
ISSN: 0550-3213
DOI: 10.1016/0550-3213(95)00273-u