Neutrino Spectroscopy with Atoms

Noboru SASAO

/ Research Core for Extreme Quantum World
/ Professor / sasao[at]okayama-u.ac.jp

Neutrino has been a mysterious particle since its existence was proposed in 1930: it is one of the most copious particles (next to photon) in the universe, and is believed to have played a crucial role in forming the matter-dominated universe. We are investigating neutrino's unknown properties using atoms. Use of coherence among atoms to amplify otherwise very small neutrino atomic rate is truly unique. Significant advance has been made recently: we could experimentally demonstrate 1,000,000,000,000,000-fold amplification for a rare process involving hydrogen molecules. We hope to apply this amplification principle to neutrino atomic process to reveal its properties.

Reference: Prog. Theor. Exp. Phys. 2014, 113C01 (12 pages)
DOI: 10.1093/ptep/ptu152

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Our project aims to span a bridge between the microscopic particle world and macroscopic universe by revealing neutrino's mysterious properties.