| DATE: |
2015-01-20 11:00 - 12:00 |
| PLACE: |
Meeting room 1 on the ground floor of Kenkyu honkan Building |
| TITLE: |
Understanding Heavy QuarkAntiQuark System by Perturbative QCD |
| CONTACT: |
Ryosuke Sato, rsato-AT-post.kek.jp |
| SPEAKER: |
Prof. Yukinari Sumino (Tohoku University) |
| LANGUAGE: |
English |
| ABSTRACT: |
Due to the discovery of renormalon cancellation, it
became possible to describe the nature of a heavy
quarkantiquark
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 the prediction |
