Sterile neutrino search in unsolved parameter region with Double Chooz detectors

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K17656
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: Matsubara Tsunayuki 首都大学東京, 理工学研究科, 特任准教授 (30724992)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: ニュートリノ振動 / ステライルニュートリノ

Outline of Final Research Achievements

Aim of this study is to search for sterile neutrino in unsolved parameter region with Double Chooz detectors, measuring energy spectrum of anti-neutrino with 400 m and 1 km baseline from Chooz reactor core in France. Data taking of the near detector has been started since 2015. We succeeded to take about 15 months of data for analysis as scheduled. Thanks to enhancement of computing and storage resources, we completed data processing, evaluation of detector performances and understandings of background events. Then we obtained realistic expectation of sensitivity to search for the sterile neutrino with statistics and systematics we have. This achievement was presented in some international conferences like ICHEP hold in August 2016. Submission to journal is expected soon after completion of real data analysis.

Free Research Field

ニュートリノ物理