2013 Fiscal Year Final Research Report
Measurement of particle-antiparticle symmetry breaking in neutrinos and R&D for the future
| Project/Area Number |
23340056
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
HAYATO Yoshinari 東京大学, 宇宙線研究所, 准教授 (60321535)
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| Co-Investigator(Renkei-kenkyūsha) |
MIURA Makoto 東京大学, 宇宙線研究所, 助教 (10272519)
NAKAYAMA Shoei 東京大学, 宇宙線研究所, 特任助教 (70401289)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | ニュートリノ / CP対称性 / CPT対称性 / スーパーカミオカンデ / 大気ニュートリノ |
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| Research Abstract |
This research aimed to understand more about the three flavor framework of lepton particles by experimental tests of particle-antiparticle symmetry violation in neutrinos. We have looked for possible difference between neutrino oscillations and antineutrino oscillations in the atmospheric neutrino data by world largest neutrino oscillation detector Super-Kamiokande. We tested two hypotheses - CP and CPT symmetry violation - and found no evidence of symmetry violation and concluded that both CP and CPT symmetries are conserved within the experimental errors.
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