J.-M. Ma

activity

19972014

most citedDark Matter particles in the galactic halo: results and implications from DAMA/NaI

230 citations · 1.1k across the 23 of their papers we have counts for

collaborators

Showing 2000Show all

2 papers · 1 filter

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^-…

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