Measurement of the $e^+e^- \to K^+K^-\pi^+\pi^-$ cross section with the CMD-3 detector at the VEPP-2000 collider

Shemyakin, D.N. ; Fedotovich, G.V. ; Akhmetshin, R.R. ; et al.
Phys.Lett.B 756 (2016) 153-160, 2016.
Inspire Record 1395968 DOI 10.17182/hepdata.76553

The process $e^+e^- \to K^+K^-\pi^+\pi^-$ has been studied in the center-of-mass energy range from 1500 to 2000\,MeV using a data sample of 23 pb$^{-1}$ collected with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider. Using about 24000 selected events, the $e^+e^- \to K^+K^-\pi^+\pi^-$ cross section has been measured with a systematic uncertainty decreasing from 11.7\% at 1500-1600\,MeV to 6.1\% above 1800\,MeV. A preliminary study of $K^+K^-\pi^+\pi^-$ production dynamics has been performed.

1 data table

Center-of-mass energy, integrated luminosity, number of four-track events, number of three-track events, detection efficiency, radiative correction and Born cross section of the process $e^{+}e^{-} \to K^{+} K^{-} \pi^{+} \pi^{-}$. Errors are statistical only.


Cross sections and Rosenbluth separations in 1H(e, e'K+)Lambda up to Q2=2.35 GeV2

The Jefferson Lab Hall A collaboration Coman, M. ; Markowitz, P. ; Aniol, K.A. ; et al.
Phys.Rev.C 81 (2010) 052201, 2010.
Inspire Record 837422 DOI 10.17182/hepdata.54197

The kaon electroproduction reaction 1H(e,e'K+)Lambda was studied as a function of the virtual-photon four-momentum, Q2, total energy, W, and momentum transfer, t, for different values of the virtual- photon polarization parameter. Data were taken at electron beam energies ranging from 3.40 to 5.75 GeV. The center of mass cross section was determined for 21 kinematics corresponding to Q2 of 1.90 and 2.35 GeV2 and the longitudinal, sigmaL, and transverse, sigmaT, cross sections were separated using the Rosenbluth technique at fixed W and t. The separated cross sections reveal a flat energy dependence at forward kaon angles not satisfactorily described by existing electroproduction models. Influence of the kaon pole on the cross sections was investigated by adopting an off-shell form factor in the Regge model which better describes the observed energy dependence of sigmaT and sigmaL.

11 data tables

Measured values of the separated cross section at Q**2 = 2.35 GeV**2 and W = 1.85 GeV.. Errors contain both statistics and systematics.

Measured values of the separated cross section at Q**2 = 1.90 GeV**2.. Errors contain both statistics and systematics.

Measured values of the separated cross section at Q**2 = 2.35 GeV**2.. Errors contain both statistics and systematics.

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MEASUREMENT OF THE POLARIZATION H PARAMETER IN REACTION GAMMA P ---> PI+ N WITH 320-MEV PHOTONS. (IN RUSSIAN)

Belyaev, A.A. ; Getman, V.A. ; Glamazdin, A.V. ; et al.
Yad.Fiz. 43 (1986) 1469-1471, 1986.
Inspire Record 238218 DOI 10.17182/hepdata.17579

None

1 data table

No description provided.


RECENT RESULTS OF EXPERIMENTS WITH THE NEUTRAL DETECTOR AT VEPP-2M

Druzhinin, V.P. ; Dubrovin, M.S. ; Eidelman, S.I. ; et al.
IYF-84-93, 1984.
Inspire Record 202875 DOI 10.17182/hepdata.37143

None

1 data table

'AXION' IS NEUTRAL BOSON WHICH HAS MASS < 200 MEV. IT IS ASSUMED THAT NEITHER THIS BOSON NOR THE PRODUCTS OF ITS DECAY ARE DETECTED.


POLARIZATION PARAMETERS SIGMA, T, P FOR THE REACTION GAMMA P ---> P PI0 NEAR THE FIRST RESONANCE. (IN RUSSIAN)

Belyaev, A.A. ; Getman, V.A. ; Gorbenko, V.G. ; et al.
Yad.Fiz. 35 (1982) 693-699, 1982.
Inspire Record 179827 DOI 10.17182/hepdata.18756

None

2 data tables

No description provided.

No description provided.


INVESTIGATION OF THE REACTION GAMMA P ---> DELTA++ PI- ON POLARIZED PROTONS. (IN RUSSIAN)

Belyaev, A.A. ; Getman, V.A. ; Gorbenko, V.G. ; et al.
Yad.Fiz. 35 (1982) 373-375, 1982.
Inspire Record 179828 DOI 10.17182/hepdata.17756

None

1 data table

No description provided.


MEASUREMENT OF POLARIZATION PARAMETER P IN ELASTIC PI+ P SCATTERING IN THE ENERGY RANGE 500-MEV - 600-MEV. (IN RUSSIAN)

Bekrenev, V.S. ; Beloglazov, YU.A. ; Gaditsky, V.G. ; et al.
Pisma Zh.Eksp.Teor.Fiz. 34 (1981) 152-155, 1981.
Inspire Record 171694 DOI 10.17182/hepdata.16953

None

4 data tables

No description provided.

No description provided.

No description provided.

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PRODUCTION OF POSITIVE PIONS ON POLARIZED PROTONS BY LINEARLY POLARIZED PHOTONS IN THE ENERGY REGION 300-MEV - 420-MEV. (IN RUSSIAN)

Getman, V.A. ; Gorbenko, V.G. ; Grushin, V.F. ; et al.
Yad.Fiz. 32 (1980) 1008-1019, 1980.
Inspire Record 159789 DOI 10.17182/hepdata.18891

None

6 data tables

SEE ABBREVIATIONS IN CR.

SEE ABBREVIATIONS IN CR.

SEE ABBREVIATIONS IN CR.

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STUDY OF PHOTOPRODUCTION OF POSITIVE PIONS ON POLARIZED PROTONS IN THE REGION OF THE FIRST RESONANCE. (IN RUSSIAN)

Getman, V.A. ; Gorbenko, V.G. ; Derkach, A.Ya. ; et al.
Yad.Fiz. 31 (1980) 930-936, 1980.
Inspire Record 157617 DOI 10.17182/hepdata.18976

None

2 data tables

No description provided.

No description provided.


MEASUREMENT OF POLARIZATION PARAMETER P IN ELASTIC PI- P SCATTERING FOR ENERGIES OF 490-MeV AND 600-MeV. (IN RUSSIAN)

Bekrenev, V.S. ; Gaditsky, V.G. ; Kovalev, A.I. ; et al.
Pisma Zh.Eksp.Teor.Fiz. 31 (1980) 197-201, 1980.
Inspire Record 157168 DOI 10.17182/hepdata.16995

None

1 data table

No description provided.