https://doi.org/10.1140/epjcd/s2004-03-1580-y
PS01 Heavy Flavour Physics
Evidence for factorization in three-body
decays
1
Institute of Physics, Academia Sinica, Taipei, Taiwan 115, Republic of China
2
Department of Physics, National Taiwan University, Taipei, Taiwan 10764, Republic of China
3
Department of Physics, University of Wisconsin, Madison, WI 53706, USA
Received:
29
November
2003
Accepted:
18
December
2003
Published online:
8
January
2004
Motivated by experimental results on , we use a factorization approach to study these decays. Two mechanisms concerning kaon pair production arise: current-produced (from vacuum) and transition (from the B meson). The kaon pair in the
decays can be produced only by the vector current (current-produced), whose matrix element can be extracted from
processes via isospin relations. The decay rates obtained this way are in good agreement with experiment. The B
–→ D
(*)0
K
–
K
0 decays involve both current-produced and transition processes. By using QCD counting rules and the measured B
–→ D
(*)0
K
–
K
0 decay rates, the measured decay spectra can be understood.
PACS: 13.25.Hw – 14.40.Nd
© Società Italiana di Fisica, Springer-Verlag, 2004