In:
Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2022, No. 6 ( 2022-06-14)
Abstract:
Using 448 . 1 × 10 6 ψ (3686) decays collected with the BESIII detector at the BEPCII e + e − storage rings, the branching fractions and angular distributions of the decays χ cJ → Ξ − $$ \overline{\Xi} $$ Ξ ¯ + and Ξ 0 $$ \overline{\Xi} $$ Ξ ¯ 0 ( J = 0 , 1 , 2) are measured based on a partial-reconstruction technique. The decays χ c 1 → Ξ 0 $$ \overline{\Xi} $$ Ξ ¯ 0 and χ c 2 → Ξ 0 $$ \overline{\Xi} $$ Ξ ¯ 0 are observed for the first time with statistical significances of 7 σ and 15 σ , respectively. The results of this analysis are in good agreement with previous measurements and have significantly improved precision.
Type of Medium:
Online Resource
ISSN:
1029-8479
DOI:
10.1007/JHEP06(2022)074
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2022
detail.hit.zdb_id:
2027350-2
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