Department

Physics

Document Type

Article

Publication Date

3-2018

Embargo Period

7-3-2018

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: (Υ(4S)→η′Υ(1S))=(3.43±0.88(stat.)±0.21(syst.))×10−5, with a significance of 5.7σ.

Journal

arXiv

Comments

Submitted to PRL

Preprint.

Also found at: https://arxiv.org/abs/1803.10303

Included in

Physics Commons

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