https://doi.org/10.1140/epjc/s10052-015-3402-0
Regular Article - Theoretical Physics
Semileptonic 
transition in QCD
1
Department of Physics, Doğuş University, Acıbadem-Kadıköy, 34722, Istanbul, Turkey
2
Department of Physics, Kocaeli University, 41380, Izmit, Turkey
* e-mail: kazizi@dogus.edu.tr
Received:
13
November
2014
Accepted:
31
March
2015
Published online:
6
May
2015
We analyze the semileptonic 
transition, where 
or 
, within the standard model. We apply the QCD sum rule approach to calculate the transition form factors entering the low energy Hamiltonian defining this channel. The fit functions of the form factors are used to estimate the total decay widths and branching fractions in all lepton channels. The orders of the branching ratios indicate that this transition is accessible at LHCb in the near future.
© SIF and Springer-Verlag Berlin Heidelberg, 2015
