Hw Zhao

activity

19982024

most citedObservation of a Broad Structure in the

π^{+} π^{-} J / ψ

Mass Spectrum around 4.26 GeV/

c^{2}

744 citations · 9.1k across the 163 of their papers we have counts for

collaborators

Showing 2000Show all

3 papers · 1 filter

hep-ex2000★ 99 cited

Measurement of B0d - B0d-bar mixing rate from the time evolution of dilepton events at the Upsilon(4S)

K. Abe

We report a determination of the B0d - B0d-bar mixing parameter Delta-m_d based on the time evolution of dilepton yields in Upsilon(4S) decays. The measurement is based on a 5.9 /f…

hep-ex2000★ 7 cited

First Measurement of the Branching Fraction of the Decay psi(2S) --> tau tau

J. Z. Bai

The branching fraction of the psi(2S) decay into tau pair has been measured for the first time using the BES detector at the Beijing Electron-Positron Collider. The result is $B_{τ…

hep-ex2000★ 16 cited

A Measurement of the Mass and Full-Width of the $η_{c}$ Meson

J. Z. Bai

In a sample of 7.8 million $J / ψ$ decays collected in the Beijing Spectrometer, the process J/ $ψ \to γ η_{c}$ is observed for five different $η_{c}$ decay channels: $K^{+} K^{-} π^{+} π^{-}$ , $π^+π^-…

Measurement of B0d - B0d-bar mixing rate from the time evolution of dilepton events at the Upsilon(4S)

First Measurement of the Branching Fraction of the Decay psi(2S) --> tau tau

A Measurement of the Mass and Full-Width of the ηc​ Meson

A Measurement of the Mass and Full-Width of the $η_{c}$ Meson