Search for the 0 glueball in ϒ(1S) and ϒ(2S) decays

S. Jia et al. (Belle Collaboration)
Phys. Rev. D 95, 012001 – Published 4 January 2017

Abstract

We report the first search for the JPC=0 glueball in ϒ(1S) and ϒ(2S) decays with data samples of (102±2)×106 and (158±4)×106 events, respectively, collected with the Belle detector. No significant signals are observed in any of the proposed production modes, and the 90% credibility level upper limits on their branching fractions in ϒ(1S) and ϒ(2S) decays are obtained. The inclusive branching fractions of the ϒ(1S) and ϒ(2S) decays into final states with a χc1 are measured to be B(ϒ(1S)χc1+anything)=(1.90±0.43(stat)±0.14(syst))×104 with an improved precision over prior measurements and B(ϒ(2S)χc1+anything)=(2.24±0.44(stat)±0.20(syst))×104 for the first time.

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  • Received 21 November 2016

DOI:https://doi.org/10.1103/PhysRevD.95.012001

© 2017 American Physical Society

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Vol. 95, Iss. 1 — 1 January 2017

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