Title

Observation of the Decay B0s→K0¯K0

Authors

B. Pal et al

Department

Physics

Document Type

Article

Publication Date

4-22-2016

Abstract

We measure the decay B0s→K0¯K0 using data collected at the Υ(5S) resonance with the Belle detector at the KEKB e+e− collider. The data sample used corresponds to an integrated luminosity of 121.4  fb−1. We measure a branching fraction B(B0s→K0¯K0)=[19.6+5.8−5.1(stat)±1.0(syst)±2.0(NB0s¯B0s)]×10−6 with a significance of 5.1 standard deviations. This measurement constitutes the first observation of this decay

Journal

Physical Review Letters

Journal ISSN

1079-7114

Volume

116

Issue

16

Digital Object Identifier (DOI)

10.1103/PhysRevLett.116.161801