| Seminar Date: | Thursday, April 18, 2013 |
| Time: | 12:30 PM - 1:30 PM |
| Location: | KIPAC Auditorium |
| Abstract: | Leptonic and semileptonic decays of B mesons have provided crucial knowledge about weak interactions in the heavy-flavor system. In particular, the (semi)leptonic final states containing a tau lepton have been of great interest for their potential as probes of new physics beyond the Standard Model. In this talk we present recent result on (semi)leptonic B decays from the Belle experiment. Belle has collected more than 770 million B meson pairs from energy-asymmetric e+e- collisions at the KEKB collider. We will focus on B+ -> tau+ nu and B -> D(*) tau+ nu decays, while other related subject may also be covered. |
| Speaker: | Youngjoon Kwon - Yonsei University
 Professor Kwon earned his B.S. from Seoul National University in 1986, and his Ph.D. from Stanford University in 1993, working at SLAC on the LASS and SLD experiments. Following an RA at the University of Rochester on the CLEO experiment, to took a faculty position at Yonsei University, where he is now Underwood Distinguished Professor. He has also spent time as a visiting scientist at KEK and a visiting Professor at Princeton University. He has been active in the Belle collaboration since 1996, served as CKM physics group convener for several years, and is currently Physics Analysis Coordinator. He has also been a member of the PDG since 2002.
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