ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2003, vol. 90, p. 091801/1-091801/4
Measurement of the B0 → J/ψπ+π- branching fraction
The branching fraction for B0 meson decay to the final state J/ψπ+π- was measured. It was found that the result was consistent with the standard model prediction. In addition, the technique of fitting the M(π+π-) distribution allows a measurement of the branching fraction for the J/ψρ0 component.