Department
Physics
Document Type
Article
Publication Date
10-6-2018
Abstract
We report the first observation of the hadronic transition Υ(4S)→η′Υ(1S), using 496 fb−1 data collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e−collider. We reconstruct the η′ meson through its decays to ρ0γ and to π+π−η, with η→γγ. We measure B(Υ(4S)→η′Υ(1S))=[3.43±0.88(stat)±0.21(syst)]×10−5, with a significance of 5.7σ.
Journal Title
Physical Review Letters
Journal ISSN
0031-9007
Volume
121
Digital Object Identifier (DOI)
10.1103/PhysRevLett.121.062001
Comments
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license.Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation,and DOI. Funded by SCOAP3.