Results 71 to 80 of about 523 (135)

CHARMONIUM IN CHINA: BEPCII/BESIII [PDF]

open access: yesInternational Journal of Modern Physics A, 2011
Results based on 106 M ψ′ events and about 226 M J/ψ events acquired with the BESIII detector at BEPCII are reported, including a confirmation of the BESII [Formula: see text] threshold enhancement in [Formula: see text], branching ratios for χcJ → π0π0 and ηη, and first measurements of the branching ratios for ψ′ → π0hc and hc → γηc, as well as ...
openaire   +2 more sources

Open Charm Physics at BESIII [PDF]

open access: yesEPJ Web of Conferences, 2019
The study of mesons and baryons containing at least one c quark is denoted as open charm physics. BESIII has collected large data samples at charm related thresholds which provide unique opportunities to study charm decays.
Weidenkaff Peter
doaj   +1 more source

Observation of the X(1840) at BESIII [PDF]

open access: yesInternational Journal of Modern Physics: Conference Series, 2014
Observation of the X(1840) in the 3(π + π - ) invariant mass in J/ψ → γ3(π + π - ) at BESIII is reviewed. With a sample of 225.3 × 10 6
openaire   +2 more sources

Charm Physics at BESIII [PDF]

open access: yesProceedings of 54th International Winter Meeting on Nuclear Physics — PoS(BORMIO2016), 2016
Proceeding of the 52nd Rencontres de Moriond EW 2017, La Thuile, Italy, March 18-25 ...
openaire   +3 more sources

R Measurement at BESIII [PDF]

open access: yesEPJ Web of Conferences
The R value is measured with a total of 14 data points with the corresponding center-of-mass energy going from 2.2324 to 3.6710 GeV. The statistical uncertainty of the measured R is less than 0.6%.
Redmer Christoph Florian
doaj   +1 more source

XYZ States at BESIII [PDF]

open access: yesInternational Journal of Modern Physics: Conference Series, 2018
The BESIII experiment have collected about 9 [Formula: see text] luminosity data samples above 3.8 GeV. Recent result on the XYZ states, which are also called exotic states, from BESIII experiment is presented in this talk, including the measurement of resonance parameters of vector [Formula: see text] states, the establishment of two isospin triplets
openaire   +1 more source

Measurement of the branching fractions of Ds+→η′X and Ds+→η′ρ+ in e+e−→Ds+Ds−

open access: yesPhysics Letters B, 2015
We study Ds+ decays to final states involving the η′ with a 482 pb−1 data sample collected at s=4.009 GeV with the BESIII detector at the BEPCII collider.
M. Ablikim   +417 more
doaj   +1 more source

Exploring nucleon structure through sub- and near-threshold ϕ-meson photoproduction

open access: yesPhysics Letters B
We propose to investigate short-range correlations (SRCs) in nuclei by studying sub and near-threshold photoproduction of ϕ-meson. The feasibility of exploring this nuclear structure in electron-positron collision experiments such as Beijing Spectrometer
Wei Wang   +4 more
doaj   +1 more source

Light mesons at BESIII

open access: yesEPJ Web of Conferences, 2015
BESIII had accumulated 1.3×109 J/ψ data samples. Selected results of the light mesons study based on part or full J/ψ samples are presented, including several observed structures around 1.85 GeV/c2, partial wave analysis of J/ψ → γηη, measurements of η ...
Ji Xiaobin
doaj   +1 more source

Highlights from BESIII experiment

open access: yesEPJ Web of Conferences, 2012
BESIII had collected large data samples on J/ψ and ψ´ peaks during the first run in 2009. We review recent results on charmonium decays and hadron spectroscopy. The prospects on open charm physics are also discussed.
Huang Yanping
doaj   +1 more source

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