The pion form factor has been measured in the space-like q2 region 0.014 to 0.26 (GeV/c)2 by scattering 300 GeV pions from the electrons of a liquid hydrogen target. A detailed description is given of the apparatus, data analysis and corrections to the data. The mean square charge radius extracted from the data is model-dependent. We find that a form which includes a realistic description of the form factor phase gives a similar results to the naive pole form, and conclude 〈r2π〉 = 0.438±0.008 fm2.
A measurement of the space-like pion electromagnetic form-factor / S.R. Amendolia, M. Arik, B. Badelek, G. Batignani, G.A. Beck, F. Bedeschi, E. Bellamy, E. Bertolucci, D. Bettoni, H. Bilokon, G. Bologna, L. Bosisio, C. Bradaschia, M. Budinich, A. Codino, M. Dellorso, B. D’etorre Piazzoli, M. Enorini, F. L. Fabbri, F. Fidecaro, L. Foa, E. Focardi, S.G.F. Frank, A. Giazotto, M.A. Giorgi, M.J. Green, J. Harvey, G.P. Heath, M.P.J. Landon, P. Laurelli, F. Liello, G. Mannocchi, P.V. March, P.S. Marrocchesi, A. Menzione, E. Meroni, L. Moroni, E. Milotti, P. Picchi, F. Ragusa, L. Ristori, L. Rolandi, S. Sala, C.G. Saltmarsh, A. Saoucha, L. Satta, A. Scribano, P. Spillantini, A. Stefanini, D. Storey, J.A. Strong, R. Tenchini, G. Tonelli, G. Triggiani, W. Von Schlippe, E. Van Herwijnen, A. Zallo. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - 277:1(1986), pp. 168-196.
A measurement of the space-like pion electromagnetic form-factor
E. Meroni;F. Ragusa;
1986
Abstract
The pion form factor has been measured in the space-like q2 region 0.014 to 0.26 (GeV/c)2 by scattering 300 GeV pions from the electrons of a liquid hydrogen target. A detailed description is given of the apparatus, data analysis and corrections to the data. The mean square charge radius extracted from the data is model-dependent. We find that a form which includes a realistic description of the form factor phase gives a similar results to the naive pole form, and conclude 〈r2π〉 = 0.438±0.008 fm2.
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