Pion Form-Factor Measurement from e+ e- --> pi+ pi- Near Threshold by electron-Positron Colliding Beams

Vasserman, I.B. ; Ivanov, P.M. ; Koop, I.A. ; et al.
Yad.Fiz. 28 (1978) 968-971, 1978.
Inspire Record 136394 DOI 10.17182/hepdata.19016

None

1 data table

No description provided.


Pion Form-Factor Measurement by e+ e- --> pi+ pi- in the Energy Range 2 e from 0.78-GeV Up to 1.34-GeV

Bukin, A.D. ; Vasserman, I.B. ; Koop, I.A. ; et al.
Phys.Lett.B 73 (1978) 226-228, 1978.
Inspire Record 134220 DOI 10.17182/hepdata.27474

The cross section of the reaction e + e − → π + π − has been measured in the energy range 2 E from 0.78 up to 1.34 GeV. The obtained experimental values of the pion form factor exceed notably the ρ -meson tail.

1 data table

No description provided.


Study of the process $e^+⁢e^-\to \pi^+\pi^-\pi^0$ in the energy range 840-1020 MeV on the VEPP-2M storage ring with the Cryogenic Magnetic Detector

The CMD-2 collaboration Barkov, L.M. ; Vasserman, I.B. ; Vorobev, P.V. ; et al.
Budker Institute Preprints (1989) 15, 1989.
Inspire Record 2774417 DOI 10.17182/hepdata.151397

On the electron-positron storage ring VEPP-2M using the Cryogenic Magnetic Detector, the cross section of the e+e- -> π+π-⁢π0 process was measured in the energy range 2x420-2x510 MeV. The energy dependence of the cross section is consistent with the predictions of the vector dominance model taking into account the interference of omega and phi mesons. The optimal value of the omega-phi interference phase is 136+-36+-10 degree.

1 data table

The Born cross section of the process e+e- -> pi+pi-pi0.