[Theory-seminars] next week:Chueng-Ryong Ji (Mo 1:00pm, room L104)

[satoshi at jlab.org]

Dear all,

we have a theory seminar next week on Monday, June 13, 1:00 pm
in room L104:

Chueng-Ryong Ji (North Carolina State Univ)

"Light-Front Zero-Mode Issue in Heavy Meson Decay Processes"



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.




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A complete list of upcoming theory seminars and talks from previous
seminars are available from:
http://www.jlab.org/~prokudin/seminars/

Alexei, Berni and Satoshi
JLab Theory Seminar Organizers