TY - JOUR
T1 - Observation of the decay (Formula presented)
AU - Ablikim, M.
AU - Achasov, M. N.
AU - Adlarson, P.
AU - Ai, X. C.
AU - Kabana, S.
AU - The BESIII collaboration
N1 - Publisher Copyright:
Published by the American Physical Society.
PY - 2025/5/1
Y1 - 2025/5/1
N2 - Using a dataset of (Formula presented) events collected by the BESIII detector operating at the BEPCII collider, we report the first observation of the decay (Formula presented) with a statistical significance of (Formula presented). The measured branching fraction is (Formula presented), where the first uncertainty is statistical and the second is systematic. Additionally, we investigate potential intermediate states in the invariant mass distributions of (Formula presented), (Formula presented) and (Formula presented). A hint of a resonance is observed in the invariant mass distribution of (Formula presented), located around (Formula presented), with a significance of (Formula presented).
AB - Using a dataset of (Formula presented) events collected by the BESIII detector operating at the BEPCII collider, we report the first observation of the decay (Formula presented) with a statistical significance of (Formula presented). The measured branching fraction is (Formula presented), where the first uncertainty is statistical and the second is systematic. Additionally, we investigate potential intermediate states in the invariant mass distributions of (Formula presented), (Formula presented) and (Formula presented). A hint of a resonance is observed in the invariant mass distribution of (Formula presented), located around (Formula presented), with a significance of (Formula presented).
UR - https://www.scopus.com/pages/publications/105005994686
U2 - 10.1103/PhysRevD.111.092007
DO - 10.1103/PhysRevD.111.092007
M3 - Article
AN - SCOPUS:105005994686
SN - 2470-0010
VL - 111
JO - Physical Review D
JF - Physical Review D
IS - 9
M1 - 092007
ER -