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An experiment to measure the electromagnetic form factor of the negative π meson has been carried out at Fermilab by elastically scattering 100-GeV/c pions from the atomic electrons in a liquid-hydrogen target. We find that the elastic differential scattering cross section is characterized by a root-mean-square pion charge radius of 0.56±0.04 fm. This paper described our experimental design, measurement resolutions, event triggering logic, event reconstruction, experimental corrections, and form-factor results.

3 data tables

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Axis error includes +- 0.54/0.54 contribution (EVENT-FINDING CORRECTIONS).

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DELTA (1236) PRODUCTION IN ANTI-NEUTRINO n ---> mu+ n pi- REACTION AT HIGH-ENERGIES

Efremenko, V.I. ; Fedotov, A.V. ; Gorichev, P.A. ; et al.

ITEP-83-1981, 1981.

Inspire Record 167553 DOI 10.17182/hepdata.40191

None

5 data tables

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Direct Measurement of the $\pi^-$ Form-Factor.

Dally, E.B. ; Drickey, Darrell James ; Hauptman, J.M. ; et al.

Phys.Rev.Lett. 39 (1977) 1176-1179, 1977.

Inspire Record 123313 DOI 10.17182/hepdata.20975

We have measured the electromagnetic form factor of the charged pion by direct scattering of 100-GeV/c π− from stationary electrons in a liquid-hydrogen target at Fermilab. The deviations from the pointlike pion-scattering cross section may be characterized by a root-mean-square charge radius for the pion of 〈rπ2〉12=0.56±0.04 F.

1 data table

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QUASIELASTIC NEUTRINO AND ANTI-NEUTRINOS INTERACTION AT THE SERPUKHOV ACCELERATOR

Measurement of the $\pi^-$ Form-factor

DELTA (1236) PRODUCTION IN ANTI-NEUTRINO n ---> mu+ n pi- REACTION AT HIGH-ENERGIES

Direct Measurement of the $\pi^-$ Form-Factor.