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Study of $$e^+e^-to Upsilon(rm1S,2S)eta$$ and $$e^+e^-to Upsilon(rm 1S)eta^{prime}$$ at $$sqrt{s}=10.866$$ GeV with the Belle detector

Kovalenko, E.*; Tanida, Kiyoshi   ; Belle Collaboration*; 181 of others*

We report the first observation of the processes $$e^+e^-toUpsilon(rm 1S,2S)eta$$ at $$sqrt{s}$$=10.866 GeV with a $$10.2sigma$$ and $$16.5sigma$$ significance respectively. The measured Born cross sections are $$sigma(e^+e^- to Upsilon(2S)eta)=2.07 pm 0.21 pm 0.19$$ pb, and $$sigma(e^+e^- to Upsilon(rm 1S)eta)=0.42 pm 0.08 pm 0.04$$ pb. We also set the upper limit on the cross section of the process $$e^+e^- to Upsilon(rm 1S)eta^{prime}$$ to be $$sigma(e^+e^- to Upsilon(rm 1S)eta^{prime}) < 0.035$$~pb at $$90%$$ CL. The results are obtained with the data sample collected with the Belle detector at the KEKB asymmetric-energy $$e^+e^-$$ collider in the energy range from 10.63 GeV to 11.02 GeV.

Language

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English

Journal

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Physical Review D

Volume

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104

Number

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11

Pages

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p.112006_1 - 112006_12

Publication Year/Month

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2021/12

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Paper URL

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https://doi.org/10.1103/PhysRevD.104.112006

DOI for research data

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Keywords

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no keyword

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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高エネルギー加速器研究機構

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- Accesses

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Percentile:0.01

Category:Astronomy & Astrophysics

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