基于GERDA Phase I的$^{76}$Ge到激发态的$2\nu\beta\beta$衰变
高能物理 - 实验
2016-01-28 v1 核实验
摘要
利用GERDA实验Phase I的数据，研究了Ge到Se激发态的双中微子双β衰变。由多达14个锗探测器组成的阵列（包括同位素富集Ge的探测器）部署在液氩中。对各种可能跃迁到激发末态的分析基于探测器对之间的符合事件，其中一个探测器探测到退激射线，另一个探测到两个电子。未观测到信号，并使用事件计数剖面似然分析确定了三个跃迁的Frequentist 90% C.L. 界限：: 1.6 yr, : 3.7 yr 以及 : 2.3 yr。这些界限比先前报道的大两个数量级以上。提取了Bayesian 90%可信界限，并用于排除跃迁的若干模型。
引用
@article{arxiv.1506.03120,
title = {$2\nu\beta\beta$ decay of $^{76}$Ge into excited states with GERDA Phase I},
author = {M. Agostini and M. Allardt and A. M. Bakalyarov and M. Balata and I. Barabanov and N. Barros and L. Baudis and C. Bauer and N. Becerici-Schmidt and E. Bellotti and S. Belogurov and S. T. Belyaev and G. Benato and A. Bettini and L. Bezrukov and T. Bode and D. Borowicz and V. Brudanin and R. Brugnera and D. Budjáš and A. Caldwell and C. Cattadori and A. Chernogorov and V. D'Andrea and E. V. Demidova and A. di Vacri and A. Domula and E. Doroshkevich and V. Egorov and R. Falkenstein and O. Fedorova and K. Freund and N. Frodyma and A. Gangapshev and A. Garfagnini and C. Gooch and P. Grabmayr and V. Gurentsov and K. Gusev and A. Hegai and M. Heisel and S. Hemmer and G. Heusser and W. Hofmann and M. Hult and L. V. Inzhechik and J. Janicskó Csáthy and J. Jochum and M. Junker and V. Kazalov and T. Kihm and I. V. Kirpichnikov and A. Kirsch and A. Klimenko and K. T. Knöpfle and O. Kochetov and V. N. Kornoukhov and V. V. Kuzminov and M. Laubenstein and A. Lazzaro and V. I. Lebedev and B. Lehnert and H. Y. Liao and M. Lindner and I. Lippi and A. Lubashevskiy and B. Lubsandorzhiev and G. Lutter and C. Macolino and B. Majorovits and W. Maneschg and E. Medinaceli and Y. Mi and M. Misiaszek and P. Moseev and I. Nemchenok and D. Palioselitis and K. Panas and L. Pandola and K. Pelczar and A. Pullia and S. Riboldi and N. Rumyantseva and C. Sada and M. Salathe and C. Schmitt and B. Schneider and J. Schreiner and O. Schulz and B. Schwingenheuer and S. Schönert and A-K. Schütz and O. Selivanenko and M. Shirchenko and H. Simgen and A. Smolnikov and L. Stanco and M. Stepaniuk and C. A. Ur and L. Vanhoefer and A. A. Vasenko and A. Veresnikova and K. von Sturm and V. Wagner and M. Walter and A. Wegmann and T. Wester and H. Wilsenach and M. Wojcik and E. Yanovich and P. Zavarise and I. Zhitnikov and S. V. Zhukov and D. Zinatulina and K. Zuber and G. Zuzel},
journal= {arXiv preprint arXiv:1506.03120},
year = {2016}
}