Based on (2712.4±14.1)×106 ψ(3686) events collected with the BESIII detector, we study the decays hc→3(π+π-)π0, hc→2(π+π-)ω, hc→2(π+π-)π0η, hc→2(π+π-)η, and hc→pp¯ via ψ(3686)→π0hc. The decay channel hc→3(π+π-)π0 is observed for the first time, and its branching fraction is determined to be (9.28±1.14±0.77)×10-3, where the first uncertainty is statistical and the second is systematic. In addition, first evidence is found for the modes hc→2(π+π-)π0η and hc→2(π+π-)ω with significances of 4.8σ and 4.7σ, and their branching fractions are determined to be (7.55±1.51±0.77)×10-3 and (4.00±0.86±0.35)×10-3, respectively. No significant signals of hc→2(π+π-)η and hc→pp¯ are observed, and the upper limits of the branching fractions of these decays are determined to be <6.19×10-4 and <4.40×10-5 at the 90% confidence level, respectively.

Study of hc→3 (π+π-)π0, hc→2 (π+π-)ω, hc→2 (π+π-)π0η, hc→2 (π+π-)η, and hc→p p ¯

Garzia, I.;Gramigna, S.;
2024

Abstract

Based on (2712.4±14.1)×106 ψ(3686) events collected with the BESIII detector, we study the decays hc→3(π+π-)π0, hc→2(π+π-)ω, hc→2(π+π-)π0η, hc→2(π+π-)η, and hc→pp¯ via ψ(3686)→π0hc. The decay channel hc→3(π+π-)π0 is observed for the first time, and its branching fraction is determined to be (9.28±1.14±0.77)×10-3, where the first uncertainty is statistical and the second is systematic. In addition, first evidence is found for the modes hc→2(π+π-)π0η and hc→2(π+π-)ω with significances of 4.8σ and 4.7σ, and their branching fractions are determined to be (7.55±1.51±0.77)×10-3 and (4.00±0.86±0.35)×10-3, respectively. No significant signals of hc→2(π+π-)η and hc→pp¯ are observed, and the upper limits of the branching fractions of these decays are determined to be <6.19×10-4 and <4.40×10-5 at the 90% confidence level, respectively.
2024
Ablikim, M.; Achasov, M.  N.; Adlarson, P.; Afedulidis, O.; Ai, X.  C.; Aliberti, R.; Amoroso, A.; An, Q.; Bai, Y.; Bakina, O.; Balossino, I.; Ban, Y....espandi
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2557312
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? ND
social impact