Using the data samples of 102 million Υ(1S) and 158 million Υ(2S) events collected by the Belle detector, we search for a pentaquark state in the pJ/ψ final state from Υ(1, 2S) inclusive decays. Here, the charge-conjugate is included. We observe clear pJ/ψ production in Υ(1, 2S) decays and measure the branching fractions to be and. We also measure the cross section of inclusive pJ/ψ production in e+e− annihilation to be σ(e+e− → pJ/ψ + anything) = [108 ± 11(stat.) ± 6(syst.)] fb at GeV using an 89.5 fb−1 continuum data sample. There is no significant Pc(4312)+, Pc(4440)+ or Pc(4457)+ signal found in the pJ/ψ final states in Υ(1, 2S) inclusive decays. We determine the upper limits of to be at the 10−6 level.

Search for a pentaquark state decaying into pJ/ψ in Υ(1, 2S) inclusive decays at Belle / Dong, X., Zou, S.M., Zhang, H.Y., Wang, X.L., Adachi, I., Ahn, J.K., Aihara, H., Al Said, S., Asner, D.M., Atmacan, H., Ayad, R., Bahinipati, S., Banerjee, S., Bessner, M., Bhardwaj, V., Biswas, D., Bodrov, D., Bozek, A., Bracko, M., Branchini, P., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2025:9(2025). [10.1007/JHEP09(2025)048]

Search for a pentaquark state decaying into pJ/ψ in Υ(1, 2S) inclusive decays at Belle

Campajola M.;De Nardo G.;Di Capua F.;Merola M.;Pardi S.;
2025

Abstract

Using the data samples of 102 million Υ(1S) and 158 million Υ(2S) events collected by the Belle detector, we search for a pentaquark state in the pJ/ψ final state from Υ(1, 2S) inclusive decays. Here, the charge-conjugate is included. We observe clear pJ/ψ production in Υ(1, 2S) decays and measure the branching fractions to be and. We also measure the cross section of inclusive pJ/ψ production in e+e− annihilation to be σ(e+e− → pJ/ψ + anything) = [108 ± 11(stat.) ± 6(syst.)] fb at GeV using an 89.5 fb−1 continuum data sample. There is no significant Pc(4312)+, Pc(4440)+ or Pc(4457)+ signal found in the pJ/ψ final states in Υ(1, 2S) inclusive decays. We determine the upper limits of to be at the 10−6 level.
2025
Search for a pentaquark state decaying into pJ/ψ in Υ(1, 2S) inclusive decays at Belle / Dong, X., Zou, S.M., Zhang, H.Y., Wang, X.L., Adachi, I., Ahn, J.K., Aihara, H., Al Said, S., Asner, D.M., Atmacan, H., Ayad, R., Bahinipati, S., Banerjee, S., Bessner, M., Bhardwaj, V., Biswas, D., Bodrov, D., Bozek, A., Bracko, M., Branchini, P., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2025:9(2025). [10.1007/JHEP09(2025)048]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/1012050
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