Now showing items 1-10 of 33
Observation of e +e - › ? 0? 0hc and a neutral charmoniumlike structure Zc(4020)0
Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider at center-of-mass energies of s?=4.23, 4.26, and 4.36 GeV, we observe e+e-›?0?0hc for the first time. The Born cross sections ...
Observation of hc radiative decay hc › ??' and evidence for hc › ??
A search for radiative decays of the P-wave spin singlet charmonium resonance hc is performed based on 4.48 × 108 ? events collected with the BESIII detector operating at the BEPCII storage ring. Events of the reaction ...
Search for the weak decay ?'›K±?± and precise measurement of the branching fraction B(J/?›??')
We present the first search for the rare decay of ?' into K±?± in J/?›??', using a sample of 1.3×109 J/? events collected with the BESIII detector. No significant signal is observed, and the upper limit at the 90\% confidence ...
Measurement of the Ds<(+)-> l(+)ve branching fractions and the decay constant fDs+
(University of Groningen, 2016)
Measurement of the absolute branching fraction of D+ › K¯ 0e +?e via K¯ 0 › ? 0? 0 *
By analyzing 2.93 fb-1 data collected at the center-of-mass energy ? s = 3.773 GeV with the BESIII detector, we measure the absolute branching fraction of the semileptonic decay D + › K¯ 0 e +?e to be B(D+ › K¯ 0 e +?e) = ...
Study of ? decays to the ?-?¯+ and ?(1385)±?¯(1385)± final states
We study the decays of the charmonium resonances J/? and ?(3686) to the final states ?-?¯+, ?(1385)±?¯(1385)± based on a single baryon tag method using data samples of (223.7±1.4)×106 J/? and (106.4±0.9)×106 ?(3686) events ...
Search for C-parity violation in J/? › ?? and ??
Using 1.06×108 ?(3686) events recorded in e+e- collisions at s?=3.686??GeV with the BESIII at the BEPCII collider, we present searches for C-parity violation in J/?›?? and ?? decays via ?(3686)›J/??+?-. No significant ...
Observation of a cross-section enhancement near mass threshold in e(+)e(-) -> Lambda(Lambda)over-bar
(Amer Physical Soc., 2019)
The process e(+)e(-) -> Lambda(Lambda) over bar is studied using data samples at root s = 2.2324, 2.400, 2.800 and 3.080 GeV collected with the BESIII detector operating at the BEPCII collider. The Born cross section is ...
Measurements of absolute hadronic branching fractions of the ? + c baryon
(APS Physics, 2016)
Study of J/Psi -> p(p)over-bar phi at BESIII
Using a data sample of 1.31×109 J/? events accumulated with the BESIII detector, the decay J/?›pp¯? is studied via two decay modes, ?›KS0KL0 and ?›K+K-. The branching fraction of J/?›pp¯? is measured to be B(J/?›pp¯?)=[5 ...