Liaoning University

output

20052026

e^{+} e^{-} \to π^{+} π^{-} J / ψ

cross section at center-of-mass energies from 3.77 to 4.60 GeV

264 citations

Showing 2007 · hep-exShow all

4 papers · 2 filters

hep-ex2007★ 135 cited

Observation of Y(2175) in $J / ψ \to η ϕ f_{0} (980)$

BES Collaboration, M. Ablikim

The decays of $J / ψ \to η ϕ f_{0} (980) (η \to γ γ, ϕ \to K^{+} K^{-}, f_{0} (980) \to π^{+} π^{-})$ are analyzed using a sample of $5.8 \times 1 0^{7}$ $J / ψ$ events collected with the BESII detector at the…

hep-ex2007★ 52 cited

Search for the Invisible Decay of $\jpsi$ in $ψ (2 S) \to π + π^{-} J / ψ$

M. Ablikim, J. Z. Bai

Using 14.0 million $ψ (2 S) e v e n t sco l l ec t e d w i t h t h e B E S - I I d e t ec t or, a se a r c h f or t h e d ec a y o f t h e$ \jpsi $t o anin v i s ib l e f ina l s t a t e in$ \psipto $i s p er f or m e d . T h e$ \jpsi$ peak i…

hep-ex2007★ 2 cited

Search for the C-parity violating process J/psi->gamma gamma via psi(2S)->pi+pi- J/psi

M. Ablikim, J. Z. Bai

Using 14.0\times 10^6 ψ(2S) events collected with the BES-II detector, the C-parity violating process J/psi->gamma gamma via psi(2S)->pi+pi- J/psi is studied. We determine a new up…

hep-ex2007★ 4 cited

Measurements of $J / ψ$ and $ψ (2 S)$ decays into $Λ Λ ˉ π^{0}$ and $Λ Λ ˉ η$

BES Collaboration, M. Ablikim

Using 58 million $J / ψ$ and 14 million $ψ (2 S)$ events collected by the BESII detector at the BEPC, branching fractions or upper limits for the decays $J / ψ$ and $ψ (2 S) \to Λ Λ ˉ π^{0}$ …

Observation of Y(2175) in J/ψ→ηϕf0​(980)

Search for the Invisible Decay of $\jpsi$ in ψ(2S)→π+π−J/ψ

Search for the C-parity violating process J/psi->gamma gamma via psi(2S)->pi+pi- J/psi

Measurements of J/ψ and ψ(2S) decays into ΛΛˉπ0 and ΛΛˉη

Observation of Y(2175) in $J / ψ \to η ϕ f_{0} (980)$

Search for the Invisible Decay of $\jpsi$ in $ψ (2 S) \to π + π^{-} J / ψ$

Measurements of $J / ψ$ and $ψ (2 S)$ decays into $Λ Λ ˉ π^{0}$ and $Λ Λ ˉ η$