https://doi.org/10.1140/epjc/s2003-01347-5
theoretical physics
Weak decays of the B c meson to B s and B mesonsin the relativistic quark model
1
Institut für Physik, Humboldt-Universität zu Berlin, Newtonstr. 15, 12489, Berlin, Germany
2
Scientific Council for Cybernetics, Russian Academy of Sciences, Vavilov Street 40, 117333, Moscow, Russia
Semileptonic and non-leptonic decays of the B
c
meson to B
s
and B mesons, caused by the 
quark transitions, are studied in the framework of the relativistic quark model. The heavy quark expansion in inverse powers of the active c and spectator 
quark is used to simplify calculations while the final s and d quarks in the B
s
and B mesons are treated relativistically. The decay form factors are explicitly expressed through the overlap integrals of the meson wave functions in the whole accessible kinematical range. The obtained results are compared with the predictions of other approaches.
© Springer-Verlag, 2003
