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Study of 48Ca Double Beta Decay

Research Project

Project/Area Number 14204026
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field 素粒子・核・宇宙線
Research InstitutionOsaka University

Principal Investigator

KISHIMOTO Tadafumi  Osaka University, Physics Department, Professor, 大学院・理学研究科, 教授 (90134808)

Co-Investigator(Kenkyū-buntansha) SAKAGUCHI Atsushi  Osaka University, Physics Department, Associate Professor, 大学院・理学研究科, 助教授 (70205730)
OGAWA Izumi  Osaka University, Physics Department, Assistant Professor, 大学院・理学研究科, 助手 (20294142)
AJIMURA Shuhei  Osaka University, Physics Department, Assistant Professor, 大学院・理学研究科, 助手 (10273575)
Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥53,820,000 (Direct Cost: ¥41,400,000、Indirect Cost: ¥12,420,000)
Fiscal Year 2004: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2003: ¥39,260,000 (Direct Cost: ¥30,200,000、Indirect Cost: ¥9,060,000)
Fiscal Year 2002: ¥13,000,000 (Direct Cost: ¥10,000,000、Indirect Cost: ¥3,000,000)
KeywordsNeutrino / Double beta decay / Majorana mass / Lepton number non-conservation / Low radioactivity / CaF2 / Scintillator / Underground laboratory / シンチレーション光
Research Abstract

The observation of double beta decay demonstrates the violation of Lepton Number conservation. It is a key experiment to answer the question why our universe is matter dominated. This research project aims at studying the double beta decay of 48Ca for which the CANDLES detector system, which features CaF2 crystals, is under construction. This year is the final year of the research. It is fortunate that our request to continue the research approved and our final year becomes the starting year of the basic Research S which roughly doubles our budget.
We have achieved the following this year.
1. We constructed vessel and oil purification system. We now have almost all elements of the detector.
2. Newly designed PMT's are immersed in pire water and endurance test was performed. We found some problem and fixed it.
3. We studied best arrangement of PMT for given number of PMT's.
4. Additional CaF2 crystals were purchased. We studied radioactive background level and found that all of them are OK.
5 … More . The almost unique background which is serious to this experiment is the successive decay of beta and alpha particles that may give background at the Q value region. The observation of pulse shape will give us information to discriminate the background for which we studied characteristics of 500 MHz flash ADC.
6. Although we are working at Oto cosmo observatory near Osaka University, the CANDLES detector system becomes so large that Oto will have difficulty to accommodate the detector. We had discussion with ICRR and we decided to install the CANDLES III at Kamioka underground laboratory.
7. We organized US-Japan seminar on "Double beta decay and neutrino masses" at Maui Hawaii from September 16-20, 2005. In this seminar we discussed current status of study of double beta decay. It helped to have recognition of our experiment.
We are currently studying characteristic of the detector we constructed at Osaka University. After that study we will move the detector system to underground laboratory and start data taking. Less

Report

(4 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (72 results)

All 2006 2005 2004 2003 2002 Other

All Journal Article (62 results) Publications (10 results)

  • [Journal Article] CANDLES for Double Beta Decay of ^<48>Ca2006

    • Author(s)
      S.Umehara
    • Journal Title

      Journal of Physics : Conference Series (in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] CANDLES project for double beta decay of ^<48>Ca2005

    • Author(s)
      S.Yoshida
    • Journal Title

      Nuclear Physics B (Proc.Suppl.)

      Pages: 138-138

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] CANDLES for the Study of ββ Decay of ^<48>Ca2005

    • Author(s)
      I.Ogawa
    • Journal Title

      Proc. of 5^<th> Int. Workshop on Neutrino Oscillations and their Origin (NOON2004)

      Pages: 260-260

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 二重ベータ崩壊とCANDLES実験2005

    • Author(s)
      岸本忠史
    • Journal Title

      高エネルギーニュース 24・3

      Pages: 210-210

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] CANDLES project for double beta decay of ^<48>Ca2005

    • Author(s)
      S.Yoshida et al.
    • Journal Title

      Nuclear Physics B (Proc.Suppl.) 138

      Pages: 214-214

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] CANDLES for the Study of ββ Decay of ^<48>Ca2005

    • Author(s)
      I.Ogawa et al.
    • Journal Title

      Proc.of 5th Int.Workshop on Neutrino Oscillations and their Origin (NOON2004)

      Pages: 260-260

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Double beta decay and CANDLES experiments2005

    • Author(s)
      T.Kishimoto
    • Journal Title

      High-Energy News 24

      Pages: 182-182

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] CANDLES PROJECT FOR DOUBLE BETA DECAY OF CA-48.2005

    • Author(s)
      S.Yoshida et al.
    • Journal Title

      Nucl.Phys.Proc.Suppl. 138

      Pages: 214-216

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Search for neutrino-less double beta decay of ^<48>Ca by CaF_2 scintillator2004

    • Author(s)
      I.Ogawa
    • Journal Title

      Nuclear Physics A 730

      Pages: 215-215

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] CANDLES for the Study of ββ Decay of ^<48>2004

    • Author(s)
      T.Kishimoto
    • Journal Title

      Proc. of 4th Int.Workshop on Neutrino Oscillations and their Origin (NOON2003)

      Pages: 338-338

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Background rejection using FADC for double beta decay experiments2004

    • Author(s)
      S.Umhehara
    • Journal Title

      Proc. of the Mini-workshop on Kaon Experiments and Detectors

      Pages: 313-313

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Test of 500MHz Flash ADC for CANDLES2004

    • Author(s)
      K.Ichihara
    • Journal Title

      Proc. of the Mini-workshop on Kaon Experiments and Detectors

      Pages: 307-307

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Present status of CANDLES III detector2004

    • Author(s)
      I.Ogawa
    • Journal Title

      Annual Report 2004 Osaka University Laboratory of Nuclear Studies

      Pages: 7-7

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Performance Test of Prototype Detector CANDELS II for Double Beta Decay Study2004

    • Author(s)
      S.Umehara
    • Journal Title

      Annual Report 2004 Osaka University Laboratory of Nuclear Studies

      Pages: 9-9

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Development of the Calibration System in CANDLES Experiment2004

    • Author(s)
      Y.Hirano
    • Journal Title

      Annual Report 2004 Osaka University Laboratory of Nuclear Studies

      Pages: 11-11

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Magnetic Field Dependence of Large Photomultipliers used in CANDLES-III2004

    • Author(s)
      S.Yoshida
    • Journal Title

      Annual Report 2004 Osaka University Laboratory of Nuclear Studies

      Pages: 13-13

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Emission Wavelength Spectra of CaF_2 Scintillator by Heavy Ion Beams2004

    • Author(s)
      S.Yoshida
    • Journal Title

      Annual Report 2004 Osaka University Laboratory of Nuclear Studies

      Pages: 15-15

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Radioactive Contamination within Scintillation Crystals2004

    • Author(s)
      S.Umehara
    • Journal Title

      Annual Report 2004 Osaka University Laboratory of Nuclear Studies

      Pages: 17-17

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Performance test of photodiode for background reduction2004

    • Author(s)
      A.Yanagisawa
    • Journal Title

      Annual Report 2004 Osaka University Laboratory of Nuclear Studies

      Pages: 19-19

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Neutron spectrum measurement for dark matter search in Oto Cosmo Observatory2004

    • Author(s)
      T.Kobayashi
    • Journal Title

      Annual Report 2004 Osaka University Laboratory of Nuclear Studies

      Pages: 21-21

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Low Level Ge Spectrometer for the Measurement of Natural Radioactivity in Detector Constructing Material2004

    • Author(s)
      S.Yoshida
    • Journal Title

      Annual Report 2004 Osaka University Laboratory of Nuclear Studies

      Pages: 23-23

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Development of the Low Background HP-Ge Detector at Oto Cosmo Observatory2004

    • Author(s)
      Y.Hirano
    • Journal Title

      Annual Report 2004 Osaka University Laboratory of Nuclear Studies

      Pages: 25-25

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Separation of Calcium Isotopes with a Crown Ether2004

    • Author(s)
      R.Hazama
    • Journal Title

      Annual Report 2004 Osaka University Laboratory of Nuclear Studies

      Pages: 27-27

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Search for neutrino-less double beta decay of ^<48>Ca by CaF_2 scintillator2004

    • Author(s)
      I.Ogawa et al.
    • Journal Title

      Nuclear Physics A 730

      Pages: 215-215

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] CANDLES for the Study of ββ Decay of ^<48>Ca2004

    • Author(s)
      T.Kishimoto et al.
    • Journal Title

      Proc.of 4th Int.Workshop on Neutrino Oscillations and their Origin (NOON2003)

      Pages: 338-338

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Background rejection using FADC for double beta decay experiments2004

    • Author(s)
      S.Umhehara et al.
    • Journal Title

      Proc.of the Mini-workshop on Kaon Experiments and Detectors

      Pages: 313-313

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Test of 500MHz Flash ADC for CANDLES2004

    • Author(s)
      K.Ichihara et al.
    • Journal Title

      Proc.of the Mini-workshop on Kaon Experiments and Detectors

      Pages: 307-307

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Present status of CANDLES III detector2004

    • Author(s)
      I.Ogawa et al.
    • Journal Title

      OULNS annual report

      Pages: 7-7

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Performance Test of Prototype Detector CANDELS II for Double Beta Decay Study2004

    • Author(s)
      S.Umehara et al.
    • Journal Title

      OULNS annual report

      Pages: 9-9

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Development of the Calibration System in CANDLES Experiment2004

    • Author(s)
      Y.Hirano et al.
    • Journal Title

      OULNS annual report

      Pages: 11-11

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Magnetic Field Dependence of Large Photomultipliers used in CANDLES-III2004

    • Author(s)
      S.Yoshida et al.
    • Journal Title

      OULNS annual report

      Pages: 13-13

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Emission Wavelength Spectra of CaF2 Scintillator by Heavy Ion Beams2004

    • Author(s)
      S.Yoshida et al.
    • Journal Title

      OULNS annual report

      Pages: 15-15

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Radioactive Contamination within Scintillation Crystals2004

    • Author(s)
      S.Umehara et al.
    • Journal Title

      OULNS annual report

      Pages: 17-17

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Performance test of photodiode for background reduction2004

    • Author(s)
      A.Yanagisawa et al.
    • Journal Title

      OULNS annual report

      Pages: 19-19

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Neutron spectrum measurement for dark matter search in Oto Cosmo Observatory2004

    • Author(s)
      T.Kobayashi et al.
    • Journal Title

      OULNS annual report

      Pages: 21-21

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Low Level Ge Spectrometer for the Measurement of Natural Radioactivity in Detector Constructing Material2004

    • Author(s)
      S.Yoshida et al.
    • Journal Title

      OULNS annual report

      Pages: 23-23

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Development of the Low Background HP-Ge Detector at Oto Cosmo Observatory2004

    • Author(s)
      Y.Hirano et al.
    • Journal Title

      OULNS annual report

      Pages: 25-25

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Separation of Calcium Isotopes with a Crown Ether2004

    • Author(s)
      R.Hazama et al.
    • Journal Title

      OULNS annual report

      Pages: 27-27

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] SEARCH FOR NEUTRINO-LESS DOUBLE BETA DECAY OF CA-48 BY CAF-2 SCINTILLATOR.2004

    • Author(s)
      I.Ogawa et al.
    • Journal Title

      Nucl.Phys.A 730

      Pages: 215-223

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Double beta decay study of ^<48>Ca by CaF_2 scintillator2003

    • Author(s)
      I.Ogawa
    • Journal Title

      Nuclear Physics A 721

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Search for WIMPs with CaF_2 scintillator2003

    • Author(s)
      R.Hazama
    • Journal Title

      Proc. of Int.School and Miniworkshop for Scintillating Crystals and their Applications in Particle and Nuclear Physics

      Pages: 131-131

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Dark matter search with ELEGANT VI CaF_2 detector2003

    • Author(s)
      I.Ogawa
    • Journal Title

      Proc. of the 1st Yamada Symposium on Neutrinos and Dark Matter in Nuclear Physics (NDM03)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Oto Cosmo Observatory - Underground Laboratory for Nuclear Particle Physics -2003

    • Author(s)
      H.Ejiri
    • Journal Title

      Proc. of the 1st Yamada Symposium on Neutrinos and Dark Matter in Nuclear Physics (NDM03)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Double Beta Decay of ^<48>Ca by CANDLES2003

    • Author(s)
      S.Umehara
    • Journal Title

      Proc. of the 1st Yamada Symposium on Neutrinos and Dark Matter in Nuclear Physics (NDM03)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Expected Performance of CANDLES III detector2003

    • Author(s)
      I.Ogawa
    • Journal Title

      Annual Report 2003 Osaka University Laboratory of Nuclear Studies

      Pages: 1-1

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Study of Light Propagation in CANDLES System2003

    • Author(s)
      S.Yoshida
    • Journal Title

      Annual Report 2003 Osaka University Laboratory of Nuclear Studies

      Pages: 3-3

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Development of pulse shape discrimination for CANDLES2003

    • Author(s)
      K.Ichihara
    • Journal Title

      Annual Report 2003 Osaka University Laboratory of Nuclear Studies

      Pages: 6-6

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Radioactive Contaminations in CaF_2 (pure) Scintillators2003

    • Author(s)
      S.Umehara
    • Journal Title

      Annual Report 2003 Osaka University Laboratory of Nuclear Studies

      Pages: 11-11

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Low Level Ge Spectrometer for the Measurement of Natural Radioactivity in Detector Constructing Material2003

    • Author(s)
      S.Yoshida
    • Journal Title

      Annual Report 2003 Osaka University Laboratory of Nuclear Studies

      Pages: 13-13

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Double beta decay study of 48Ca by CaF2 scintillator2003

    • Author(s)
      I.Ogawa et al.
    • Journal Title

      Nuclear Physics A 721

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Search for WIMPs with CaF2 scintillator2003

    • Author(s)
      R.Hazama et al.
    • Journal Title

      Proc.of Int.School and Miniworkshop for Scintillating Crystals and their Applications in Particle and Nuclear Physics

      Pages: 131-131

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Dark matter search with ELEGANT VI CaF2 detector2003

    • Author(s)
      I.Ogawa et al.
    • Journal Title

      Proc.of the 1st Yamada Symposium on Neutrinos and Dark Matter in Nuclear Physics (NDM03)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Oto Cosmo Observatory - Underground Laboratory for Nuclear Particle Physics -2003

    • Author(s)
      H.Ejiri et al.
    • Journal Title

      Proc.of the 1st Yamada Symposium on Neutrinos and Dark Matter in Nuclear Physics (NDM03)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Double Beta Decay of 48Ca by CANDLES2003

    • Author(s)
      S.Umehara et al.
    • Journal Title

      Proc.of the 1st Yamada Symposium on Neutrinos and Dark Matter in Nuclear Physics (NDM03)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Expected Performance of CANDLES III detector2003

    • Author(s)
      I.Ogawa et al.
    • Journal Title

      OULNS annual report

      Pages: 1-1

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Study of Light Propagation in CANDLES System2003

    • Author(s)
      S.Yoshida et al.
    • Journal Title

      OULNS annual report

      Pages: 3-3

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Development of pulse shape discrimination for CANDLES2003

    • Author(s)
      K.Ichihara et al.
    • Journal Title

      OULNS annual report

      Pages: 6-6

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Radioactive Contaminations in CaF2(pure) Scintillators2003

    • Author(s)
      S.Umehara et al.
    • Journal Title

      OULNS annual report

      Pages: 11-11

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Low Level Ge Spectrometer for the Measurement of Natural Radioactivity in Detector Constructing Material2003

    • Author(s)
      S.Yoshida et al.
    • Journal Title

      OULNS annual report

      Pages: 13-13

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Scintillation efficiency of nuclear recoils in a CaF2(Eu) crystal for Dark Matter search2002

    • Author(s)
      R.Hazama
    • Journal Title

      Nuclear Instruments and Methods in Physics Research A 482

      Pages: 297-297

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Scintillation efficiency of nuclear recoils in a CaF2(Eu) crystal for Dark Matter search2002

    • Author(s)
      R.Hazama et al.
    • Journal Title

      Nuclear Instruments and Methods in Physics Research A 482

      Pages: 297-297

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] CANDLES for Double Beta Decay of ^<48>Ca

    • Author(s)
      S.Umehara et al.
    • Journal Title

      Journal of Physics : Conference Series (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] I.Ogawa, et al.: "Search for neutrino-less double beta decay of^<48>Ca by CaF_2 scintillator"Nuclear Physics A. 730(1-2). 215-223 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Kishimoto, et al.: "CANDLES for the study ofβ βdecay of ^<48>Ca"Proc.. (発表予定).

    • Related Report
      2003 Annual Research Report
  • [Publications] J.H.Kim, et al.: "Neutron Neutron Energy Spectra from the Nonmesonic Weak Decay of ^<12>_λC and ^<89>_λY Hypernuclei"Phys.Rev.. C68. 065201 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tadafumi Kishimoto, Toru Sato: "θ^+: Another Explanation And Prediction"Phys.Rev.Lett.. (submitted).

    • Related Report
      2003 Annual Research Report
  • [Publications] S.Yoshida et al.: "Search for Wimps with NaI(Tl) Detectors at Oto Cosmo Observatory"Nuclear Physics A. 721. 1056-1059 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] A.Sakaguchi et al.: "Structure of ^<13>_λC Hypernucleus Studied by the (K^-,π^-,γ)Reaction"Nucl.Phys.A. 721. 979-982 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] H.Toki, K.Imai, T.Kishimoto(編集): "Particles And Nuclei.Proceedings, 16th International Conference, Panic'02 Osaka, Japan, September 30-October 4, 2002."Nucl.Phys.A721. 1-1184 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] I.Ogawa et al.: "Double beta decay study of ^<48>Ca by CaF_2 scintillator"Nuclear Physics A. (in press).

    • Related Report
      2002 Annual Research Report
  • [Publications] S.Yoshida et al.: "WIMP search with NaI detectors at Oto Cosmo Observatory"Nuclear Physics A. (in press).

    • Related Report
      2002 Annual Research Report
  • [Publications] I.Ogawa et al.: "Search for 0νdouble beta decay of ^<48>Ca by CaF_2 scintillator"Physics Letters B. (submitted).

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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