ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2003, vol. 91, p. 2618011-2618015
Evidence for B0 → π0π0
The decay B0 → π0π0 was investigated. The analysis was based on the data sample collected with a Belle detector. It was assumed that neutral and charged B mesons are produced in equal amounts. A signal with a significance of 3.4 standard deviations was detected. The branching factor was also obtained by dividing the signal yield by reconstruction efficiency.