Search for new hadronic decays of hc and observation of hc → K+K-π+π-π0

BESIII Collaboration; M. Ablikim; M.N. Achasov; P. Adlarson; S. Ahmed; M. Albrecht; R. Aliberti; A. Amoroso; Nasser Kalantar-Nayestanaki; Rosa Kappert; Myroslav Kavatsyuk; Johan Messchendorp; Viktor Rodin

doi:10.1103/PhysRevD.102.112007

Search for new hadronic decays of h_c and observation of h_c→ K⁺K^-π⁺π^-π⁰

BESIII Collaboration, M. Ablikim, M.N. Achasov, P. Adlarson, S. Ahmed, M. Albrecht, R. Aliberti, A. Amoroso, Nasser Kalantar-Nayestanaki, Rosa Kappert, Myroslav Kavatsyuk, Johan Messchendorp, Viktor Rodin

Energy and Sustainability Research Institute Groningen

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Abstract

Ten hadronic final states of the hc decays are investigated via the process ψ(3686)→π0hc, using a data sample of (448.1±2.9)×106 ψ(3686) events collected with the BESIII detector. The decay channel hc→K+K-π+π-π0 is observed for the first time and has a measured significance of 6.0σ. The corresponding branching fraction is determined to be B(hc→K+K-π+π-π0)=(3.3±0.6±0.6)×10-3 (where the uncertainties are statistical and systematic, respectively). Evidence for the decays hc→π+π-π0η and hc→KS0K±π∓π+π- is found with a significance of 3.6σ and 3.8σ, respectively. The corresponding branching fractions (and upper limits) are obtained to be B(hc→π+π-π0η)=(7.2±1.8±1.3)×10-3 (

Original language	English
Article number	112007
Number of pages	10
Journal	Physical Review D
Volume	102
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.102.112007
Publication status	Published - 1-Dec-2020

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BESIII Collaboration, Ablikim, M., Achasov, M. N., Adlarson, P., Ahmed, S., Albrecht, M., Aliberti, R., Amoroso, A., Kalantar-Nayestanaki, N., Kappert, R., Kavatsyuk, M., Messchendorp, J., & Rodin, V. (2020). Search for new hadronic decays of h_c and observation of h_c→ K⁺K^-π⁺π^-π⁰. Physical Review D, 102(11), Article 112007. https://doi.org/10.1103/PhysRevD.102.112007

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title = "Search for new hadronic decays of hc and observation of hc → K+K-π+π-π0",

abstract = "Ten hadronic final states of the hc decays are investigated via the process ψ(3686)→π0hc, using a data sample of (448.1±2.9)×106 ψ(3686) events collected with the BESIII detector. The decay channel hc→K+K-π+π-π0 is observed for the first time and has a measured significance of 6.0σ. The corresponding branching fraction is determined to be B(hc→K+K-π+π-π0)=(3.3±0.6±0.6)×10-3 (where the uncertainties are statistical and systematic, respectively). Evidence for the decays hc→π+π-π0η and hc→KS0K±π∓π+π- is found with a significance of 3.6σ and 3.8σ, respectively. The corresponding branching fractions (and upper limits) are obtained to be B(hc→π+π-π0η)=(7.2±1.8±1.3)×10-3 (",

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T1 - Search for new hadronic decays of hc and observation of hc → K+K-π+π-π0

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M.N.

AU - Adlarson, P.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Aliberti, R.

AU - Amoroso, A.

AU - Kalantar-Nayestanaki, Nasser

AU - Kappert, Rosa

AU - Kavatsyuk, Myroslav

AU - Messchendorp, Johan

AU - Rodin, Viktor

PY - 2020/12/1

Y1 - 2020/12/1

N2 - Ten hadronic final states of the hc decays are investigated via the process ψ(3686)→π0hc, using a data sample of (448.1±2.9)×106 ψ(3686) events collected with the BESIII detector. The decay channel hc→K+K-π+π-π0 is observed for the first time and has a measured significance of 6.0σ. The corresponding branching fraction is determined to be B(hc→K+K-π+π-π0)=(3.3±0.6±0.6)×10-3 (where the uncertainties are statistical and systematic, respectively). Evidence for the decays hc→π+π-π0η and hc→KS0K±π∓π+π- is found with a significance of 3.6σ and 3.8σ, respectively. The corresponding branching fractions (and upper limits) are obtained to be B(hc→π+π-π0η)=(7.2±1.8±1.3)×10-3 (

AB - Ten hadronic final states of the hc decays are investigated via the process ψ(3686)→π0hc, using a data sample of (448.1±2.9)×106 ψ(3686) events collected with the BESIII detector. The decay channel hc→K+K-π+π-π0 is observed for the first time and has a measured significance of 6.0σ. The corresponding branching fraction is determined to be B(hc→K+K-π+π-π0)=(3.3±0.6±0.6)×10-3 (where the uncertainties are statistical and systematic, respectively). Evidence for the decays hc→π+π-π0η and hc→KS0K±π∓π+π- is found with a significance of 3.6σ and 3.8σ, respectively. The corresponding branching fractions (and upper limits) are obtained to be B(hc→π+π-π0η)=(7.2±1.8±1.3)×10-3 (

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