The process
e
+
e
−
→
K
+
K
−
π
0
has been studied in the center-of-mass energy range from 1.2 to 2 GeV using a 80.6 pb
−1
data sample collected with the CMD-3 detector at the electron-positron ...collider VEPP-2000. Preliminary results of the cross-section measurement are presented.
The preliminary results of measurement of the e{sup +} e{sup −} → π{sup +}π{sup −}π{sup 0} cross section in the 1.05–2 GeV center-of-mass energy range with 30 pb{sup –1} of experimental data ...collected using the CMD-3 detector are presented. The parameters of resonant states ω(1420) and ω(1650) are obtained.
Preliminary results of an experiment that is aimed at measuring the cross section for the process
e
+
e
−
→
K
+
K
−
at c.m. energies in the range between 1.01 and 2.0 GeV with the aid of the CMD-3 ...detector and which is being performed at the VEPP-2000 collider of the Budker Institute of Nuclear Physics (Novosibirsk, Siberian Branch, Russian Academy of Sciences) are presented.
Barrel calorimeter of the CMD-3 detector Shebalin, V. E.; Anisenkov, A. V.; Aulchenko, V. M. ...
Physics of atomic nuclei,
12/2015, Letnik:
78, Številka:
13
Journal Article
Recenzirano
The structure of the barrel calorimeter of the CMD-3 detector is presented in this work. The procedure of energy calibration of the calorimeter and the method of photon energy restoration are ...described. The distinctive feature of this barrel calorimeter is its combined structure; it is composed of two coaxial subsystems: a liquid xenon calorimeter and a crystalline CsI calorimeter. The calorimeter spatial resolution of the photon conversion point is about 2 mm, which corresponds to an angular resolution of ∼6 mrad. The energy resolution of the calorimeter is about 8% for photons with energy of 200 MeV and 4% for photons with energy of 1 GeV.
The cross sections for the processes
e
+
e
−
→ 2(π
+
π
−
π
0
) and
e
+
e
−
→ 3(π
+
π
−
) at c.m. energies in the range of 1.5–2 GeV were measured with the aid of the CMD-3 detector at the VEPP-2000 ...collider of the Budker Institute of Nuclear Physics (Novosibirsk, Siberian Branch, Russian Academy of Sciences). The integrated luminosity in the respective experiment was 22 pb
−1
.
We report preliminary results on the measurement of the cross section of the process e+e- → K+K-π+π- in the c.m. energy range from 1.5 GeV to 2 GeV. It is shown that the cross section is dominated by ...the contributions of several intermediate states K+K-ρ, K*Kπ, ϕπ+π- and K*K*.
We report preliminary results on the measurement of the
$e^+e^- \to p \bar{p}$
cross section with the CMD-3 detector at the VEPP-2000 electron-positron collider based on 4.5 pb-1 of integrated ...luminosity collected in the c.m. energy range 1.92 - 2.0 GeV. Event selection using information from the Drift Chamber and Calorimeters provides a clean sample of
$p \bar{p}$
events. The obtained results are in good agreement with the previous measurements.
HADRONIC CROSS SECTION MEASUREMENT AT CMD-3 AKHMETSHIN, R. R; ANISENKOV, A. V; AULCHENKO, V. M ...
International Journal of Modern Physics: Conference Series,
2014, Letnik:
35
Journal Article, Conference Proceeding
Recenzirano
The VEPP-2000 electron-positron collider was commissioned in 2010. About 60 pb-1 were collected so far by CMD-3 detector in the whole available c.m. energy range from 0.32 GeV to 2.0 GeV. The ...preliminary results of data analysis for various modes of e+e− → hadrons are discussed.
The cross section of the process \(e^+e^-\to\pi^+\pi^-\) has been measured in the center-of-mass energy range from 0.32 to 1.2 GeV with the CMD-3 detector at the electron-positron collider VEPP-2000. ...The measurement is based on an integrated luminosity of about 88 pb\(^{-1}\), of which 62 pb\(^{-1}\) represent a complete dataset collected by CMD-3 at center-of-mass energies below 1 GeV. In the dominant region near the \(\rho\) resonance a systematic uncertainty of 0.7% was achieved. The implications of the presented results for the evaluation of the hadronic contribution to the anomalous magnetic moment of the muon are discussed.
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