scholarly journals HADRONIC CROSS SECTION MEASUREMENT AT CMD-3

2014 ◽  
Vol 35 ◽  
pp. 1460387
Author(s):  
R. R. AKHMETSHIN ◽  
A. V. ANISENKOV ◽  
V. M. AULCHENKO ◽  
V. S. BANZAROV ◽  
L. M. BARKOV ◽  
...  

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.

2019 ◽  
Vol 212 ◽  
pp. 04007
Author(s):  
A. L. Erofeev ◽  
R. R. Akhmetshin ◽  
A. N. Amirkhanov ◽  
A. V. Anisenkov ◽  
V. M. Aulchenko ◽  
...  

The process e+ e−→ K+ K−π0 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.


2016 ◽  
Vol 31 (33) ◽  
pp. 1630038
Author(s):  
E. P. Solodov ◽  
A. N. Amirkhanov ◽  
A. V. Anisenkov ◽  
V. M. Aulchenko ◽  
V. S. Banzarov ◽  
...  

The CMD-3 detector has been taking data since December 2010 at the VEPP-2000 electron–positron collider. The collected data sample corresponds to about 60 inverse picobarn of integrated luminosity in the c.m. energy range from 0.32 GeV to 2.0 GeV. Preliminary results of the analysis of various hadronic cross-sections, in particular, [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], 3[Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] are presented. The processes with multi-hadron final states have several intermediate states which have to be taken into account to correctly describe the angular and invariant mass distributions, as well as cross-section energy dependence.


2019 ◽  
Vol 218 ◽  
pp. 02006 ◽  
Author(s):  
Fedor Ignatov ◽  
I.B. Logashenko ◽  
R.R. Akhmetshin ◽  
A.N. Amirkhanov ◽  
A.V. Anisenkov ◽  
...  

The CMD-3 detector has been successfully collecting data at the electron-positron collider VEPP-2000 since December 2010. The first scan below 1 GeV for a π+π− measurement was performed in 2013. The collected data sample corresponds to about 18 pb−1 of integrated luminosity in this energy range. Analysis of the e+e−→ π+π− cross section is in progress. Status of this measurement are presented.


2016 ◽  
Vol 79 (2) ◽  
pp. 251-259 ◽  
Author(s):  
V. L. Ivanov ◽  
R. R. Akhmetshin ◽  
A. N. Amirkhanov ◽  
A. V. Anisenkov ◽  
V. M. Aulchenko ◽  
...  

2014 ◽  
Vol 35 ◽  
pp. 1460388 ◽  
Author(s):  
M. N. ACHASOV ◽  
V. M. AULCHENKO ◽  
A. YU. BARNYAKOV ◽  
K. I. BELOBORODOV ◽  
A. V. BERDYUGIN ◽  
...  

The preliminary results on multihadron processes obtained with the SND detector at the e+e− collider VEPP-2000 in the energy range from 1 to 2 GeV are presented. The results are interesting in connection with their contribution to the total hadronic cross section, the muon g-2 and a possibility to study excited vector mesons properties. The nucleon anti-nucleon production was also studied.


2014 ◽  
Vol 35 ◽  
pp. 1460457 ◽  
Author(s):  
R. R. AKHMETSHIN ◽  
A. V. ANISENKOV ◽  
V. M. AULCHENKO ◽  
V. S. BANZAROV ◽  
L. M. BARKOV ◽  
...  

We report preliminary results on the measurement of the [Formula: see text] 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 [Formula: see text] events. The obtained results are in good agreement with the previous measurements.


2017 ◽  
Vol 95 (3) ◽  
Author(s):  
Gy. Gyürky ◽  
A. Ornelas ◽  
Zs. Fülöp ◽  
Z. Halász ◽  
G. G. Kiss ◽  
...  

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