Search for axion-like particles with four-wave-mixing in the vacuum

2015 Fiscal Year Final Research Report

• Project/Area Number: 25287060
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Hiroshima University
• Principal Investigator: Homma Kensuke 広島大学, 理学(系)研究科(研究院), 助教 (40304399)
• Co-Investigator(Kenkyū-buntansha): Sakabe Shuji 京都大学, 化学研究所, 教授 (50153903)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: アクシオン / 擬スカラー場 / 暗黒物質 / レーザー / 真空内四光波混合

Outline of Final Research Achievements

We have searched for axion-like particles (ALP), which can be a reasonable candidate for dark matter in the Universe, by combining two-color laser fields in the same optical axis. This search is based on ”four-wave mixing in the vacuum", where one laser is used to create ALP and the other one is used to stimulate decays of those produced particles. As a result of the search, we have not observed the signature beyond statistical fluctuations. This result has been published as two papers. The first result corresponds to historically the first search based on this unique method.

Free Research Field

素粒子・原子核・レーザー実験