Study of the B- --> J/psi K- pi+ pi- Decay and Measurement of the B- --> X(3872) K- Branching Fraction

摘要

The authors study the decay B(sup -) (yields) J/(psi)K(sup -)(pi)(sup +)(pi)(sup -) using 117 million B(bar B) events collected at the (Upsilon)(4S) resonance with the BaBar detector at the PEP-II e(sup +)e(sup -) asymmetric-energy storage ring.