Now showing items 1-5 of 5
Measurement of the leptonic decay width of J/psi using initial state radiation
Using a data set of 2.93 fb(-1) taken at a center-of-mass energy of root s = 3.773 GeV with the BESIII detector at the BEPCII collider, we measure the process e(+) e(-) -> J/psi gamma -> mu(+)mu(-)gamma and determine the ...
Measurement of azimuthal asymmetries in inclusive charged dipion production in e(+) e(-) annihilations at root s=3.65 GeV
(American Physical Society, 2016-01-27)
We present a measurement of the azimuthal asymmetries of two charged pions in the inclusive process e(+) e(-) -> pi pi X based on a data set of 62 pb(-1) at the center-of-mass energy of 3.65 GeV collected with the SESIII ...
Study of D+ -> K-pi(+)e(+)nu(e)
(American Physical Society, 2016-08-04)
We present an analysis of the decay D+ -> K-pi(+)e(+)nu(e) based on data collected by the BESIII experiment at the psi(3770) resonance. Using a nearly background-free sample of 18262 events, we measure the branching fraction ...
Measurements of the center-of-mass energies at BESIII via the di-muon process
(Chinese Physical Society, 2016-06)
From 2011 to 2014, the BESIII experiment collected about 5 fb(-1) data at center-of-mass energies around 4 GeV for the studies of the charmonium-like and higher excited charmonium states. By analyzing the di-muon process ...
Search for the weak decay eta ' -> K-+/-pi(-/+) and precise measurement of the branching fraction B(J/psi -> phi eta ')
(American Physical Society, 2016-04-20)
We present the first search for the rare decay of eta' into K-+/- pi(-/+) in J/psi -> phi eta', using a sample of 1.3 x 10(9) J/psi events collected with the BESIII detector. No significant signal is observed, and the upper ...