N. Qi

activity

19982009

most citedObservation of a near-threshold enhancement in th p pbar mass spectrum from radiative J/psi-->gamma p pbar decays

309 citations · 2.2k across the 47 of their papers we have counts for

collaborators

Showing 1998Show all

3 papers · 1 filter

hep-ex1998★ 39 cited

Study of the Hadronic Decays of χ_c States

J. Z. Bai

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 r…

hep-ex1998★ 23 cited

Determination of the J/psi Leptonic Branching Fraction via psi(2S) -> pi^+ pi^- J/psi

J. Z. Bai

A comparison of the rates for psi(2S) -> pi^+ pi^- J/psi, J/psi -> l^+l^- and J/psi -> anything is used to determine the J/psi leptonic branching fractions. The results are B(J/psi…

hep-ex1998★ 18 cited

Branching Fractions for $ψ (2 S) t o γ η^{'}$ and $γ η$

J. Z. Bai

We report the first measurements of the branching fractions: $B (ψ (2 S) - > γ η^{'}) = (1.54 \pm 0.31 \pm 0.23) x 1 0^{- 4}$ and $B (ψ (2 S) - > γ η) = (0.53 \pm 0.31 \pm 0.08) x 1 0^{- 4}$ . The $…

Study of the Hadronic Decays of χ_c States

Determination of the J/psi Leptonic Branching Fraction via psi(2S) -> pi^+ pi^- J/psi

Branching Fractions for ψ(2S)toγη′ and γη

Branching Fractions for $ψ (2 S) t o γ η^{'}$ and $γ η$