[Jlab-seminars] Theory Center Seminar

[Mary Fox]

Theory Center Seminar
Monday, June 13, 2011
1:00 p.m. (coffee at 12:45 p.m.)
CEBAF Center, Room L104

Chueng-Ryong Ji
North Carolina State Univ

One of the most well-suited formulations for the analysis of exclusive 
processes involving hadrons may be provided in the framework of 
light-front dynamics (LFD) due to its distinguishable simplicity in the 
treatment of vacuum fluctuations. The zero-mode complication is 
nevertheless still an issue to establish LFD as a successful 
phenomenological tool for the analysis of exclusive processes. In this 
talk, we discuss the issue of zero-mode complication in the heavy meson 
decay processes such as in the exclusive semi-leptonic and rare decays 
of B mesons. We present our calculation of the weak transition form 
factors for the semi-leptonic decay processes as well as the tensor form 
factors for the rare decay processes and discuss our power counting 
method to pin down the existence/nonexistence of the zero-mode in each 
of these form factors. Our findings from the present analysis indicate 
that the light-front zero-mode complication is either absent or 
controllable in the heavy meson decay processes.