Search for the $0^{--}$ Glueball in ${\rm Y}(1S)$ and ${\rm Y}(2S)$ decays

Abstract

We report the first search for the $J^{PC}=0^{--}$ glueball in ${\rm Y}(1S)$ and ${\rm Y}(2S)$ decays with data samples of $(102\pm 2)$ million and $(158\pm 4)$ million 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 ${\rm Y}(1S)$ and ${\rm Y}(2S)$ decays are obtained. The inclusive branching fractions of the ${\rm Y}(1S)$ and ${\rm Y}(2S)$ decays into final states with a ${\chi }_{c1}$ are measured to be $\BR(Υ(1S)\to χ_{c1}+ anything) = (1.90\pm 0.43(stat.)\pm 0.14(syst.))\times 10^{-4}$ with an improved precision over prior measurements and $\BR(Υ(2S)\to χ_{c1}+ anything) = (2.24\pm 0.44(stat.)\pm 0.20(syst.))\times 10^{-4}$ for the first time.

arXiv comment19 pages, 17 figures, Fig.10b was polished, but all the results unchanged. Paper was published in PRD

References in corpus (12)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• Big-Bang Nucleosynthesis
• Glueball Spectrum and Matrix Elements on Anisotropic Lattices
• Electron Identification in Belle
• Prompt J/psi production at e^+e^- colliders
• New precision measurement of the $J/\psi$- and ${\psi }^{\prime }$ -meson masses
• Finding the $0^{--}$ Glueball
• Inclusive Charmonium Production via Double $c\bar{c}$ in $e^{+}{e}^{-}$ Annihilation
• Measurement of the Mass Splittings between the $b\bar{b}{\chi }_{b,J}(1P)$ States
• New Measurements of Upsilon(1S) Decays to Charmonium Final States
• Measurement of exclusive ${\rm Y}(1S)$ and ${\rm Y}(2S)$ decays into Vector-Pseudoscalar final states

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• Nonlocal gluon condensates in QCD sum rules
• Experimental review of the ${\rm Y}(1S,2S,3S)$ physics at $e^{+}{e}^{-}$ colliders and the LHC
• Search for light tetraquark states in ${\rm Y}(1S)$ and ${\rm Y}(2S)$ decays
• Inclusive ${\chi }_{cJ}$ production in ${\rm Y}$ decay at $\mathcal{O}({\alpha }_s^5)$ in NRQCD factorization
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