Three-nucleon scattering at zero degrees and three-nucleon forces in high-momentum region

2014 Fiscal Year Final Research Report

• Project/Area Number: 24684013
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Tohoku University
• Principal Investigator: SEKIGUCHI Kimiko 東北大学, 理学(系)研究科(研究院), 准教授 (70373321)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 三体力 / 核力 / 少数系 / スピン / 偏極重陽子 / 高運動量

Outline of Final Research Achievements

Three nucleon forces (3NFs) are taken as key elements for fully understanding nuclear phenomena. In order to study 3NFs in high-momentum region measurement of all deuteron analyzing powers for deuteron-proton scattering at very backward angles at 200-400 MeV/nucleon has been performed at the RIKEN RIBF. Obtained data are compared with the relativistic Faddeev calculations in which 3NFs are also taken into account. Large discrepancies have been found at backward angles, and relativistic effects are estimated to be small. These results indicate that high-momentum components of 3NFs, which could play significant roles in nuclear matter properties, are missing elements and should be taken into account in the calculations of three-nucleon scattering at the higher energies.

Free Research Field

実験核物理