Department
Physics
Document Type
Article
Publication Date
2-2016
Embargo Period
7-10-2018
Abstract
We report a measurement of the B 0 → ψ(2S)π 0 branching fraction based on the full Υ(4S) data set of 772 × 106 BB¯ pairs collected by the Belle detector at the KEKB asymmetric-energy e +e − collider. We obtain B(B 0 → ψ(2S)π 0 ) = (1.17 ± 0.17(stat) ± 0.08(syst)) × 10−5 . The result has a significance of 7.2 standard deviations and is the first observation of the decay B 0 → ψ(2S)π 0.
Journal Title
Physical Review D
Journal ISSN
2470-0010
Volume
93
Issue
3
Digital Object Identifier (DOI)
10.1103/PhysRevD.93.031101
Comments
Preprint.