Research on quarkonium using nonrelativistic QCD

2014 Fiscal Year Final Research Report

• Project/Area Number: 24740176
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Numazu National College of Technology
• Principal Investigator: KOMA Yoshiaki 沼津工業高等専門学校, 教養科, 准教授 (00334748)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 素粒子論 / ハドロン物理学 / クォーコニウム / クォーク間ポテンシャル

Outline of Final Research Achievements

An effective theory of QCD called potential-nonrelativistic QCD (pNRQCD) enables us to investigate various properties of heavy quarkonium by inserting nonperturbative QCD inputs, such as the quark-antiquark potential and its relativistic corrections, computed by lattice QCD simulations. We investigate the mass spectra of quarkonium in pNRQCD using the lattice QCD inputs within the quenched approximation, and develop numerical methods toward accurate determination of the potential including the effect of dynamical quarks. We demonstrate that one of the methods we have found is applicable to compute the three-quark potential accurately.

Free Research Field

数物系科学