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Chinese Physics C> 1991, Vol. 15> Issue(11) : 966-972 

A Limit of Neutrinoless Double Beta Decay of 48Ca

  •  Institute of High Energy Physics,Academia Sinica,Beijing 1000392 China Center of advanced Science and Technology,World Laboratory,Beijing 1000803 Institute of Theoretical Physics,Academia Sinica,Beijing 1000804 Institute of optics and fine Mechanics,Academia Sinica,Changchun 130022

  • A search for the neutrinoless double beta decay of 48Ca is carried out in a coal mine which is located 512m underground near Beijing.Large scintillation crystals of natural CaF2 were used as both the detector and the double beta decay source.Result obtained after a total of 7588.5 hours of data taking gives 1.1×1022 years (68%C.L.) as the lower limit of the half-life of the neutrinoless double beta decay of 68Ca.
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    [1] J. D. Vergados, Phys. Report, 133(1986), 1.[2] Y. C. Zhu et al., lrfodcrn Phys. Lett., A1(1986), 231.[3] E. der Mateosian and M. Goldhaber, Phys. Rev., 146(1966), 810.[4] J.Menefee et al., IEEE Trans. NS-13(1966) 720.[5] W. H. Tian et al., Modcrn Phys. Lett., A4(1959), 213.[6] E. Fiorini, Proc. of International Symposium on Nuclear Beta Decay and Neutrino, Osaka, June (1986),11.[7] C. R. Ching, T. H. Ho and X. R. Wu, Phys, Rev.,. C40(1989), 304.[8] H. F. Wu et al., Phys. Lett., B162(1985), 227[9] R. K. Bardim, C.S.Wu et al., Nuclear, Phys., A158(1970), 337.

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YOU Ke, ZHU Yu-Can, LV Jun-Guang, SUN Han-Sheng, TIAN Wei-Hua, ZHAO Wen-Heng, ZHENG Zhi-Peng, YE Ming-Han, QING Cheng-Rui, HE Zuo-Xiu, CUI Feng-Zhu, YU Chang-Jiang and A Limit of Neutrinoless Double Beta Decay of 48Ca[J]. Chinese Physics C, 1991, 15(11): 966-972.
YOU Ke, ZHU Yu-Can, LV Jun-Guang, SUN Han-Sheng, TIAN Wei-Hua, ZHAO Wen-Heng, ZHENG Zhi-Peng, YE Ming-Han, QING Cheng-Rui, HE Zuo-Xiu, CUI Feng-Zhu, YU Chang-Jiang and A Limit of Neutrinoless Double Beta Decay of 48Ca[J]. Chinese Physics C, 1991, 15(11): 966-972. shu
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Received: 1900-01-01
Revised: 1900-01-01
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A Limit of Neutrinoless Double Beta Decay of 48Ca

    Corresponding author: YOU Ke,
  • Institute of High Energy Physics,Academia Sinica,Beijing 1000392 China Center of advanced Science and Technology,World Laboratory,Beijing 1000803 Institute of Theoretical Physics,Academia Sinica,Beijing 1000804 Institute of optics and fine Mechanics,Academia Sinica,Changchun 130022
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 1991-11-05

Abstract: A search for the neutrinoless double beta decay of 48Ca is carried out in a coal mine which is located 512m underground near Beijing.Large scintillation crystals of natural CaF2 were used as both the detector and the double beta decay source.Result obtained after a total of 7588.5 hours of data taking gives 1.1×1022 years (68%C.L.) as the lower limit of the half-life of the neutrinoless double beta decay of 68Ca.

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