{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1873398392829687680.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.48550/arxiv.1112.0942"}}],"dc:title":[{"@value":"Spin-Parity Analysis of ppbar Mass Threshold Structure in J/psi and psi' Radiative Decays"}],"description":[{"notation":[{"@value":"A partial wave analysis of the $p \\bar{p}$ mass-threshold enhancement in the reaction $J/��\\rightarrow��p\\bar{p}$ is used to determine: its $J^{PC}$ quantum numbers to be $0^{-+}$; its peak mass to be below threshold at $M=1832^{+19}_{-5} {\\rm(stat.)}^{+18}_{-17} {\\rm (syst.)}\\pm19 {\\rm (model)} {\\rm MeV}/c^2$; and its total width to be $��<76 {\\rm MeV}/c^2$ at the 90% C.L. The product branching ratio is measured to be $B(J/��\\rightarrow��X(p\\bar{p}))B(X(p\\bar{p})\\rightarrow p\\bar{p})=(9.0^{+0.4}_{-1.1} {\\rm (stat.)}^{+1.5}_{-5.0} {\\rm (syst.)}\\pm2.3 {\\rm (model)})\\times10^{-5}$. A similar analysis performed on $��^\\prime\\rightarrow��p\\bar{p}$ decays shows, for the first time, the presence of a corresponding enhancement with a production rate relative to that for $J/��$ decays of $R=(5.08^{+0.71}_{-0.45} {\\rm (stat.)}^{+0.67}_{-3.58} {\\rm (syst.)}\\pm0.12 {\\rm (model)})%$."}]},{"notation":[{"@value":"5 pages, 3 figures, submitted to Phys. Rev. Lett"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1893398392829687680","@type":"Researcher","foaf:name":[{"@value":"BESIII Collaboration"}]}],"publication":{"dc:publisher":[{"@value":"arXiv"}],"prism:publicationDate":"2011-01-01"},"dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=High%20Energy%20Physics%20-%20Experiment%20(hep-ex)","dc:title":"High Energy Physics - Experiment (hep-ex)"},{"@id":"https://cir.nii.ac.jp/all?q=FOS:%20Physical%20sciences","dc:title":"FOS: Physical sciences"},{"@id":"https://cir.nii.ac.jp/all?q=High%20Energy%20Physics%20-%20Experiment","dc:title":"High Energy Physics - Experiment"}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360857762997977216","@type":"Article","relationType":["isVersionOf"],"jpcoar:relatedTitle":[{"@value":"Spin-Parity Analysis of<mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mml:mi>p</mml:mi><mml:mover accent=\"true\"><mml:mi>p</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math>Mass Threshold Structure in<mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:math>and<mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mml:mi>ψ</mml:mi><mml:mo stretchy=\"false\">(</mml:mo><mml:mn>3686</mml:mn><mml:mo stretchy=\"false\">)</mml:mo></mml:math>Radiative Decays"}]}],"dataSourceIdentifier":[{"@type":"OPENAIRE","@value":"doi_dedup___::0c42c65f43ba9cfe0b9a171a8d4f1a46"}]}