Heavy Quarkonium and 2-Loop Quarkonium Hamiltonian

by Yukinari Sumino

Tuesday Mar 17, 2026, 12:00 PM → 1:00 PM Europe/Madrid

C7b/058 - Seminar (IFAE Main Building C7b)

Heavy quarkonium system provides an ideal laboratory to investigate
theoretical and phenomenological aspects of QCD deeply. We have recently
computed the 2-loop quarkonium Hamiltonian. This is the first non-trivial
calculation of the N^4 LO corrections to the quarkonium Hamiltonian,
defined in the potential-NRQCD effective field theory. In the first part,
we review phenomenological motivations to compute the Hamiltonian. In the
latter part, we explain the procedure of this computation as well as
theoretically interesting points, and then we present the new results and
some phenomenological impacts.