| DATE: |
2009-05-29 14:00 - |
| PLACE: |
Kenkyu Honkan 2F RM 220 |
| TITLE: |
Ultra soft correction to t-tbar threshold cross section at ILC. |
| CONTACT: |
SAKURAI, Kazuki/sakurai AT post.kek.jp |
| SPEAKER: |
Dr. Yuichiro Kiyo (Karlsruhe U, Germany) |
| LANGUAGE: |
English |
| ABSTRACT: |
Top quark pair production near threshold is an unique process to measure top quark mass precisely with accuracy of 50 MeV at ILC. We are computing QCD corrections to the process at NNNLO. In this talk I review effective field theory framework (NRQCD) and focus on recently computed ultrasoft correction. Impacat on the top quark mass mearsurement and application to other processes are disscussed. |
