Abstract
In this talk, we present recent results from BESIII experiment. This talk covers the studies of charmonium(-like) states, light hadron spectroscopy and charm physics at the BESIII.
Highlights
The Beijing Electron Collider has been upgraded to a double ring collider with a design luminosity of 1 × 1033cm−2s−1 at a center-of-mass energy of 3.78 GeV/c2
Samples of 13 billion J/ψ decay events and 0.5 billion ψ(2S ) decay events have been collected for the study of charmonium decays and light hadron spectroscopy in the charmonium decays
We present the most recent results on the studies of the charged charmonium-like states, charmonium decays, light hadron spectroscopy and charm physics at the BESIII experiment
Summary
The Beijing Electron Collider has been upgraded to a double ring collider with a design luminosity of 1 × 1033cm−2s−1 at a center-of-mass energy of 3.78 GeV/c2. Between December of 2012 and June of 2013, the BESIII detector collected a total integrated luminosity of 2.9fb−1 of data samples, especially, the largest samples collected at ECM = 4.23 GeV/c2 (1054 pb−1), 4.26 GeV/c2 (806 pb−1), and 4.36 GeV/c2 (523 pb−1), these data samples have provided powerful study of the XYZ states In this talk, we present the most recent results on the studies of the charged charmonium-like states, charmonium decays, light hadron spectroscopy and charm physics at the BESIII experiment. A fit to the π±J/ψ invariant mass spectrum as shown in Fig. 1 (Top), neglecting interference, results in a mass of (3899.0 ± 3.6 ± 4.9) MeV/c2 and a width of (46 ± 10 ± 20) MeV [1] This structure, was observed at the same time by the Belle collaboration [2] and was confirmed by the authors of Ref. Zσc(σe((+3ee+9−e0→−0→π)±πZ+pcπ(r3−o9Jd0/ψ0u))∓c)tio=n (21.5 ± 3.3 ± 7.5)% [1]
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