TY - JOUR
T1 - Observation of the decays χcJ → ϕϕη
AU - BESIII Collaboration
AU - Ablikim, M.
AU - Achasov, M.N.
AU - Adlarson, P.
AU - Ahmed, S.
AU - Albrecht, M.
AU - Alekseev, M.
AU - Amoroso, A.
AU - Kalantar-Nayestanaki, Nasser
AU - Kappert, Rosa
AU - Kavatsyuk, Myroslav
AU - Messchendorp, Johan
AU - Rodin, Viktor
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Using a data sample of (448.1±2.9)×106 ψ(3686) decays collected by the BESIII detector at the Beijing Electron Positron Collider (BEPCII), we observe the decays χcJ→ϕϕη(J=0,1,2), where the χcJ are produced via the radiative processes ψ(3686)→γχcJ. The branching fractions are measured to be B(χc0→ϕϕη)=(8.41±0.74±0.62)×10−4, B(χc1→ϕϕη)=(2.96±0.43±0.22)×10−4, and B(χc2→ϕϕη)=(5.33±0.52±0.39)×10−4, where the first uncertainties are statistical, and the second are systematic. We also search for intermediate states in the ϕϕ or ηϕ subsystems, but no significant structure is seen due to the limited statistics.
AB - Using a data sample of (448.1±2.9)×106 ψ(3686) decays collected by the BESIII detector at the Beijing Electron Positron Collider (BEPCII), we observe the decays χcJ→ϕϕη(J=0,1,2), where the χcJ are produced via the radiative processes ψ(3686)→γχcJ. The branching fractions are measured to be B(χc0→ϕϕη)=(8.41±0.74±0.62)×10−4, B(χc1→ϕϕη)=(2.96±0.43±0.22)×10−4, and B(χc2→ϕϕη)=(5.33±0.52±0.39)×10−4, where the first uncertainties are statistical, and the second are systematic. We also search for intermediate states in the ϕϕ or ηϕ subsystems, but no significant structure is seen due to the limited statistics.
U2 - 10.1103/PhysRevD.101.012012
DO - 10.1103/PhysRevD.101.012012
M3 - Article
SN - 1550-7998
VL - 101
JO - Physical Review D
JF - Physical Review D
IS - 1
M1 - 012012
ER -