1 / 16

Double beta decays of 100 Mo and Molybdenum Observatory Of Neutrinos(MOON)

Double beta decays of 100 Mo and Molybdenum Observatory Of Neutrinos(MOON). Introduction Neutrino studied by 100 Mo ELEGANT V and Oto Cosmo Observatory Molybdenum Observatory Of Neutrinos (MOON) Concluding Remarks. Collaborators(Japan-USA).

nuri
Download Presentation

Double beta decays of 100 Mo and Molybdenum Observatory Of Neutrinos(MOON)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Double beta decays of 100Mo and Molybdenum Observatory Of Neutrinos(MOON) • Introduction • Neutrino studied by 100Mo • ELEGANT V and Oto Cosmo Observatory • Molybdenum Observatory Of Neutrinos (MOON) • Concluding Remarks

  2. Collaborators(Japan-USA) K.Fushimi1,H.Ejiri2,J.Engel4,K.Hayashi5,R.Hazama3 T.Kishimoto6,P.Krastev7,N.Kudomi5,K.Kume5, H.Kuramoto5, K.Matsuoka6,M.Nomachi6,H.Ohsumi8, R.G.H.Robertson3, K.Takahisa5, and S.Yoshida5 • Dept. of Physics, The Univ. of Tokushima • International Institute for Advanced Studies • Nuclear Physics Lab.and Dept. of Physics, Univ. of Washington • Dept. of Physics and Astronomy, Univ. of North Carolina • RCNP, Osaka Univ. • Dept. of Physics, Osaka Univ. • Dept. of Physics, Univ. of Wisconsin • Dept. of Physics, Saga Univ.

  3. Introduction • Double Beta Decay and Neutrino Properties • Neutrino Property • Mass <mn> • RHC <RHC> • SN and Solar Neutrino • Majoron

  4. Neutrino studied by 100Mo • Double Beta Decay • 100Mo -> 100Ru • Qbb=3.034MeV • Solar Neutrino • SN Neutrino • 100Mo -> 100Tc • QEC=0.168MeV

  5. ELEGANT V and Oto Cosmo Observatory • 100km from Osaka • 150km from Tokushima • Cosmic ray 4X10-7/cm2/s (1/100000) • Neutron 4X10-5/cm2/s (1/100) • 222Rn 10Bq/m3 (Same as outside)

  6. ELEGANT V • ELEGANT V (ELEctron Gamma-ray Neutrino Telescope) • 100Mo Source film • Drift chamber • Plastic Scintillator • NaI(Tl) Scintillator

  7. ELEGANT VNIM A302 (1991) 304

  8. 0nbbB decay of 100Mo • Single Majoron Emitting bb decay

  9. Measurement by EL V at Oto • Experimental data 0.14 kg yr • 2nbb T2nbb1/2=1.15X1019yr • BG U,Th (MC simulation)

  10. Limits on <gB>

  11. Limits on other modes Kamioka(7333hr) and Oto(7562hr) Phys. Rev. C63(01) 065501

  12. MOON Objectives . • Spectroscopic real-time studies of two b rays from 100Mo. • Double beta (bb) decays with sensitivity of mn~0.03 eV. • Individual low energy solar n and supernova n by inverse b followed by successive b Phys. Rev. Lett. 85 (00) 291

  13. Solar-n capture rates in units of SNU

  14. MOON • MOON, a super modules of nMo/100Mo& scintillators with modest volume and realistic purity. • High position resolution and adequate time window for two b rays reduce correlated and accidental BG. • MOON with ~1 ton 100Mo is used for spectroscopic & real-time studies of Majorana n with sensitivity of mn ~0.03 eV by 0nbb. • Low E solar and supernova n by inverse b tagged by successive b.

  15. MOON Plastic fiber-Mo Ensemble

  16. Concluding remarks • 100Mo as Neutrino Microlaboratory Large responses for bb-n, Solar-n, SN-n • ELEGANT V Stringent limits on <mn>, Majoron etc. • MOON • Realtime spectroscopic studies of Majorona n mn~0.03eV • Low Energy Solar Neutrino and SN neutrino

More Related