Work

2-loop Quarkonium Hamiltonian (Non-annihilation Channel)

Year: 2024

Type: conference-paper

Abstract: Heavy quarkonium system provides an ideal laboratory to investigate QCD deeply. We report on our calculation of the two-loop quarkonium Hamiltonian (in the non-annihilation channel). This is the first non-trivial calculation of the $\rm N^4LO$ corrections to the quarkonium Hamiltonian, defined in the potential-NRQCD effective field theory. We explain the procedure of this computation as well as theoretically interesting points, and then we present the result.

Source: Loops and Legs in Quantum Field Theory (LL)

DOI: 10.22323/1.467.0020

Author: Yukinari Sumino

Institution: Tohoku University

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: Japan Society for the Promotion of Science

Award: 高精度QCD計算のための理論的枠組の構築と現象論的応用