Measurement of branching fractions of J/ψ and ψ(3686) decays to Σ and Σ ¯
Journal of High Energy Physics, ISSN: 1029-8479, Vol: 2021, Issue: 11
2021
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Article Description
Using 1310.6 × 10J/ψ and 448.1 × 10ψ(3686) events collected with the BESIII detector, the branching fractions of J/ψ decays to ΣΣ ¯ is measured to be (10.61 ± 0.04 ± 0.36) × 10, which is significantly more precise than the current world average. The branching fractions of ψ(3686) decays to ΣΣ ¯ is measured to be (2.52 ± 0.04 ± 0.09) × 10, which is consistent with the previous measurements. In addition, the ratio of B(ψ(3686) → ΣΣ ¯ )/B(J/ψ → ΣΣ ¯ ) is determined to be (23.8 ± 1.1)% which violates the “12% rule”. [Figure not available: see fulltext.]
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85120919705&origin=inward; http://dx.doi.org/10.1007/jhep11(2021)226; https://link.springer.com/10.1007/JHEP11(2021)226; http://dx.doi.org/10.1007/jhep11%282021%29226; https://dx.doi.org/10.1007/jhep11%282021%29226; https://link.springer.com/article/10.1007/JHEP11(2021)226
Springer Science and Business Media LLC
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