Measurement of the electron-Positron Annihilation Cross-Section Into pi+ pi- at the Energies 915-MeV, 990-MeV and 1076-MeV

Cosme, G. ; Courau, A. ; Dudelzak, B. ; et al.
LAL-1287, 1976.
Inspire Record 109771 DOI 10.17182/hepdata.38244

None

1 data table

No description provided.


Pion Form-Factor from 480-MeV to 1100-MeV

Quenzer, A. ; Ribes, M. ; Rumpf, F. ; et al.
Phys.Lett.B 76 (1978) 512-516, 1978.
Inspire Record 134061 DOI 10.17182/hepdata.27443

The pion form factor is measured in the reaction e + e − → π + π − for center of mass energies in the range 480–1100 MeV. Our results are first analysed in terms of the conventional Vector Meson Dominance formalism, and then taking into account the ωπ inelastic channel. The result of this later formalism is a pion form factor ( F π ) which fits quite well all the existing data on F π both in the timelike and spacelike regions, and pion mean square radius of 〈 r π 2 〉 = 0.460 ± 0.011 fm 2 or 〈r π 2 〉 1 2 = 0.678 ± 0.008 fm .

1 data table

No description provided.