Quarkonium (-like) states at BELLE

descriptionPublicationkeyboard_double_arrow_right Article 01 Apr 2016 English Publisher:Elsevier BVJournal:Nuclear and Particle Physics Proceedings, volume 273-275, pages 2,027-2,032 (issn: 2405-6014,

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Authors: Krokovny, Pavel;

doi: 10.1016/j.nuclphysbps.2015.09.328

Quarkonium (-like) states at BELLE

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Abstract

AbstractWe report the recent results on quarkonium (-like) states by the Belle experiment. A new charged charmonium-like state Zc(4200)+ decaying to J/ψπ+ is observed with a significance of 6.2σ. The mass and width of the Zc(4200)+ are 4196−29−13+31+17 MeV/c2 and 370−70−132+70+70 MeV, respectively; the preferred assignment of the quantum numbers is JP=1+. We also report the first observation of the e+e−→ω[π+π−π0]χbJ(J=1,2) processes at a center-of-mass energy of 10.867 GeV. In the π+π−π0 invariant mass spectrum, significant non-ω signals are also observed.

Related Organizations

Budker Institute of Nuclear Physics
Russian Federation
Novosibirsk State University
Russian Federation

Keywords

Belle experiment, Heavy quarkonia

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