Dear members,
We are pleased to announce two seminars by Prof. Yukinari Sumino.
Seminar 1
* Title: Understanding Heavy Quark-AntiQuark System by Perturbative QCD
* Speaker: Yukinari Sumino (Tohoku University)
* Date: 3:00 PM, May 19 2016
* Place: CTPU Seminar Room, KAIST Munji Campus
* Abstract: Due to the discovery of renormalon cancellation, it became possible to describe the nature of a heavy quark-antiquark system (such as bottomonium) based on perturbative QCD, both qualitatively and quantitatively. Accordingly, interpretaions of the heavy quark mass and interquark force have been modified considerably. I overview what has been understood and some of theoretical progress since then. The UV part of the interquark potential can be computed in perturbative QCD. We show that a "Coulomb+linear" potential is obtained as prediction.
Seminar 2
* Title: Computation of heavy quarkonium spectrum in perturbative QCD and determination of mc, mb, mt
* Speaker: Yukinari Sumino (Tohoku University)
* Date: 3:00 PM, May 20 2016
* Place: CTPU Seminar Room, KAIST Munji Campus
* Abstract: We computed a full formula of the heavy quarkonium spectrum up to NNNLO in expansion in alpha_s. We present basics as well as some of modern technologies of the computation, with introduction to non-experts. We apply the formula to extract mc, mb (and mt in future) with high precision.
We look forward to your participation in the seminars and lectures.
Thank you.