Abstract
In this paper we discuss the contributions to the amplitude of the 0νββ decay, mediated by the heavy neutrino, from the two kinds of pion-charge-exchange mechanisms. The pion-double-charge-exchange mechanism is much more important for the 0νββ decay in nuclei, compared to the pion-single-charge-exchange mechanism.
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The project supported by National Natural Science Foundation of China
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Wu, H.F., Song, H.Q. & Huang, T. A discussion of contributions to the 0 vββ decay from the pion-charge-exchange mechanisms. Z. Physik A - Atomic Nuclei 332, 225–228 (1989). https://doi.org/10.1007/BF01289779
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DOI: https://doi.org/10.1007/BF01289779