In recent years several new Majoron models were invented to avoidshortcomings of the classical models while leading to observable decay rates indouble beta experiments. We give the first experimental half life bounds ondouble beta decays with new Majoron emission and derive bounds on the effectiveneutrino--Majoron couplings from the data of the $^{76}Ge$ HEIDELBERG--MOSCOWexperiment. While stringent half life limits for all decay modes and thecoupling constants of the classical models were obtained, small matrix elementsand phase space integrals \cite{hir95,pae95} result in much weaker limits onthe effective coupling constants of the new Majoron models.
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机译：近年来，发明了几种新的Majoron模型，以避免经典模型的缺点，同时导致双beta实验中可观察到的衰减率。我们用新的Majoron辐射给出了双β衰变的第一个实验半衰期界限，并从$ ^ {76} Ge $ HEIDELBERG-MOSCOW实验的数据推导了有效中微子-马约隆耦合的界。虽然获得了所有衰减模式的严格半衰期限制和经典模型的耦合常数，但是较小的矩阵元素和相空间积分\ cite {hir95，pae95}导致对新Majoron模型的有效耦合常数的限制要弱得多。
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