Study of the Hadronic Decays of χ_c States

Abstract

Hadronic decays of the P-wave spin-triplet charmonium states χ_cJ (J=0,1,2) are studied using a sample of ψ(2S) decays collected by the BES detector operating at the BEPC storage ring. Branching fractions for the decays χ_c1 going to K_s^0 K^+ π^- + c.c., χ_c0 going to K_s^0 K_s^0, χ_c2 going to K_s^0 K_s^0, χ_c0 going to ϕϕ, χ_c2 going to ϕϕand χ_cJ going to K^+ K^- K^+ K^- are measured for the first time, and those for χ_cJ going to π^+ π^- π^+ π^-, $ χ_cJ going to π^+ π^- K^+ K^-, χ_cJ going to π^+ π^- p \bar{p} and χ_cJ going to 3(π^+ π^-) are measured with improved precision. In addition, we determine the masses of the χ_c0 and η_c to be M_{χ_{c0}}=3414.1 \pm 0.6(stat) \pm 0.8 (sys) MeV and M_{η_c}=2975.8 \pm 3.9(stat) \pm 1.2 (sys) MeV.

arXiv comment24 pages, 12 figures, 6 tables, use revtex, submitted to Phys. Rev. D

References in corpus (2)

• Study of the P-wave charmonium state χ_{cJ} in ψ(2S) decays
• Determination of the J/psi Leptonic Branching Fraction via psi(2S) -> pi^+ pi^- J/psi

Cited by in corpus (27)

• Partial Wave Analysis of ${\chi }_{c0}\to {\pi }^{+}{\pi }^{-}{K}^{+}{K}^{-}$
• Implications of light-quark admixtures on charmonium decays into meson pairs
• Observation of B+ -> chi_c0 K+
• Observation potential for χ_b at the Tevatron and LHC
• First observation of psi(2S)-->K_S K_L
• Charmonium meson and hybrid radiative transitions
• A coherent study of ${\chi }_{c0,2}\to VV$, $PP$ and $SS$
• Evidence for f0(980)f0(980) production in chi_c0 decays
• Experimental Investigation of the Two-Photon Widths of the ${\chi }_{c0}$ and the ${\chi }_{c2}$ Mesons
• Measurements of the Mass and Full-Width of the ${\eta }_c$ Meson
• χ_{c0,2} decay into light meson pairs and its implication of the scalar meson structures
• New Measurement of Exclusive Decays of the chi_c0 and chi_c2 to Two-Meson Final States
• A Measurement of the Mass and Full-Width of the ${\eta }_c$ Meson
• Search for psi(2S) -> gamma eta_c(2S) via fully reconstructed eta_c(2S) decays
• Obervation of χ_{cJ}--> omega omega decays
• Physics Accomplishments and Future Prospects of the BES Experiments at the BEPC Collider
• First Evidence of Lambda Lambda-bar in χ_cJ Decays
• Measurements of $\psip$ decays into $\gamma K\bar{K}\pi$ and $γη\pipi$
• Observation of $K^{\ast }(892{)}^0{\bar{K}}^{\ast }(892{)}^0$ in ${\chi }_{cJ}$ Decays
• Measurement of χ_cJ--> K+K-K+K-
• Measurement of chi_cJ Decays to 2(pi^+pi^-)ppbar Final States
• First observations of $\psi (2S)$ and ${\chi }_{cJ}(1P)$ decays to four-body final states $h^{+}{h}^{-}{K}_S^0{K}_S^0$
• Probing scalar meson structures in ${\chi }_{c1}$ decays into pseudoscalar and scalar
• Finding eta_c' and h_c at HERA-B
• Charmonium Decay Physics
• Hadronic decays of charmonia from BESII
• Observation of ${\chi }_{cJ}\to p\bar{p}{K}_S^0{K}^{-}{\pi }^{+}+c.c.$