Browsing by Department "Fen fakültesi"
Now showing items 1-13 of 13
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Determination of the number of J/psi events with inclusive J/psi decays
(2017)A measurement of the number of J/ψ events collected with the BESIII detector in 2009 and 2012 is performed using inclusive decays of the J/ψ. The number of J/ψ events taken in 2009 is recalculated to be (223.7 ± 1.4) × ... -
Determination of the number of ψ(3686) events at BESIII
(2018)The numbers of psi(3686) events accumulated by the BESIII detector for the data taken during 2009 and 2012 are determined to be (107.0 +/- 0.8)x10(6) and (341.1 +/- 2.1)x10(6), respectively, by counting inclusive hadronic ... -
Evidence for e(+)e(-)->gamma chi c1,2 at center-of-mass energies from 4.009 to 4.360 GeV
(2015)Using data samples collected at center-of-mass energies of root s=4.009, 4.230, 4.260, and 4.360 GeV with the BESIII detector operating at the BEPCII collider, we perform a search for the process e(+)e(-)->gamma chi(cJ) ... -
Luminosity measurements for the R scan experiment at BESIII
(2017)By analyzing the large-angle Bhabha scattering events e +e − → (γ)e+e − and diphoton events e +e − → (γ)γγ for the data sets collected at center-of-mass (c.m.) energies between 2.2324 and 4.5900 GeV (131 energy ... -
Measurement of e(+)e(-) -> D(D)over-bar cross sections at the psi(3770) resonance
(2018)We report new measurements of the cross sections for the production of DD final states at the ¯ ψ(3770) resonance. Our data sample consists of an integrated luminosity of 2.93 fb−1 of e+e − annihilation data produced ... -
Measurement of integrated luminosity and center-of-mass energy of data taken by BESIII at root s=2.125 GeV
(2017)To study the nature of the state Y (2175), a dedicated data set of e +e − collision data was collected at the center-of-mass energy of 2.125 GeV with the BESIII detector at the BEPCII collider. By analyzing large-angle Bhabha ... -
Measurement of the absolute branching fraction of D-vertical bar -> (K)over-bar(0)e(vertical bar) nu(e) via (K)over-bar(0) -> pi(0)pi(0)
(2016)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 +νe to be B(D+ → K¯ ... -
Measurement of the integrated Luminosities of cross-section scan data samples around the (3770) mass region
(2018)To investigate the nature of the ψ(3770) resonance and to measure the cross section for e +e −→DD, ¯ a cross-section scan data sample, distributed among 41 center-of-mass energy points from 3.73 to 3.89 GeV, was taken with ... -
Measurement of the integrated luminosities of the data taken by BESIII at root s=3.650 and 3.773 GeV
(2013)Data sets were collected with the BES detector at the BEPC collider at the center-of-mass energy of √s=3.650 GeV during May 2009 and at √s=3.773 GeV from January 2010 to May 2011. By analyzing the large angle Bhabha ... -
Measurements of the center-of-mass energies at BESIII via the di-muon process
(2016)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 e +e − ... -
Precision measurement of the integrated luminosity of the data taken by BESIII at center-of-mass energies between 3.810 GeV and 4.600 GeV
(2015)From December 2011 to May 2014, about 5 fb−1 of data were taken with the BESIII detector at center-ofmass energies between 3.810 GeV and 4.600 GeV to study the charmonium-like states and higher excited charmonium states. ...