Observation of Ï(4S)âη
Phys Rev Lett
; 121(6): 062001, 2018 Aug 10.
Article
em En
| MEDLINE
| ID: mdl-30141661
ABSTRACT
We report the first observation of the hadronic transition Ï(4S)âη^{'}Ï(1S), using 496 fb^{-1} data collected at the Ï(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We reconstruct the η^{'} meson through its decays to ρ^{0}γ and to π^{+}π^{-}η, with ηâγγ. We measure B(Ï(4S)âη^{'}Ï(1S))=[3.43±0.88(stat)±0.21(syst)]×10^{-5}, with a significance of 5.7σ.
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01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2018
Tipo de documento:
Article