Journal article
Observation of B→D(∗)K−K0(∗) decays
Belle Collaboration, A Drutskoy, K Abe, K Abe, N Abe, R Abe, T Abe, I Adachi, Byoung Sup Ahn, H Aihara, M Akatsu, Y Asano, T Aso, V Aulchenko, T Aushev, AM Bakich, Y Ban, E Banas, A Bay, I Bedny Show all
Physics Letters B | Elsevier | Published : 2002
Abstract
The B→D(∗)K−K(∗)0 decays have been observed for the first time. The branching fractions of the B→D(∗)K−K(∗)0 decay modes are measured. Significant signals are found for the B→D(∗)K−K∗0 and B−→D0K−K0S decay modes. The invariant mass and polarization distributions for the K−K∗0 and K−K0S subsystems have been studied. For the K−K∗0 sybsystem these distributions agree well with those expected for two-body B→D(∗)a1−(1260) decays, with a1−(1260)→K−K∗0. The analysis was done using 29.4 fb−1 of data collected with the Belle detector at the e+e− asymmetric collider KEKB.