Using a data sample of (448.1±2.9)×106 ψ(3686) events collected with the BESIII detector at the BEPCII collider, we present measurements of branching fractions for the decays χcJ→Σ+Σ- and Σ0Σ0. The decays χc1,2→Σ+Σ- and Σ0Σ0 are observed for the first time, and the branching fractions for χc0→Σ+Σ- and Σ0Σ0 decays are measured with improved precision. The branching fraction ratios between the charged and neutral modes are consistent with the prediction of isospin symmetry.

Improved measurements of χcJ → Σ+ Σ - and Σ0 Σ 0 decays

Alekseev M.;Amoroso A.;Bianchi F.;Destefanis M.;De Mori F.;Greco M.;Lavezzi L.;Maggiora M.;Marcello S.;Pellegrino J.;Sosio S.;Spataro S.;
2018-01-01

Abstract

Using a data sample of (448.1±2.9)×106 ψ(3686) events collected with the BESIII detector at the BEPCII collider, we present measurements of branching fractions for the decays χcJ→Σ+Σ- and Σ0Σ0. The decays χc1,2→Σ+Σ- and Σ0Σ0 are observed for the first time, and the branching fractions for χc0→Σ+Σ- and Σ0Σ0 decays are measured with improved precision. The branching fraction ratios between the charged and neutral modes are consistent with the prediction of isospin symmetry.
2018
97
5
052011-1
052011-10
Ablikim M.; Achasov M.N.; Ahmed S.; Albrecht M.; Alekseev M.; Amoroso A.; An F.F.; An Q.; Bai J.Z.; Bai Y.; Bakina O.; Baldini Ferroli R.; Ban Y.; Ben...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1796550
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