Heavy quark symmetry and multi-flavor nuclear structure extended to charm quark

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K17641
• 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 Institute of Technology
• Principal Investigator: Shigehiro Yasui 東京工業大学, 理学院, 特任助教 (00535346)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: チャーム / ボトム / 原子核 / 重いクォークの対称性 / 近藤効果 / 重イオン衝突 / クォーク物質 / エキゾチックハドロン

Outline of Final Research Achievements

We consider the new type of nuclei which contain charm or bottom flavor as multi-baryon systems with heavy quarks. Those are called “charm nuclei” or “bottom nuclei”. In this study, focusing on the “heavy quark (spin) symmetry” which is a characteristic symmetry for a heavy quark, we constructed the inter-hadron interaction between a heavy hadron and a nucleon as the heavy-hadron effective theory, and gave theoretical predictions about the properties of heavy hadrons in nuclear systems. We considered the heavy-light meson (a bound state of a heavy antiquark and a light quark) as one of the simplest systems, and investigated their masses and decays in nuclear systems by applying the obtained interaction to the many-body calculations.

Free Research Field

ハドロン理論