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

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

1978

5 pages

Published in:

Phys.Lett.B 76 (1978) 512-516

Published: 1978

DOI:

10.1016/0370-2693(78)90918-8

PDG:

{{\mathit \omega}{(782)}}

\rightarrow

{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}

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Abstract: (Elsevier)

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 .

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: ANNIHILATION
ANNIHILATION: ELECTRON POSITRON
PI+: FINAL STATE
FINAL STATE: PI+
PI-: FINAL STATE
FINAL STATE: PI-
PI: PAIR PRODUCTION
PAIR PRODUCTION: PI

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Figures(0)

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