The negative kaon electromagnetic form factor has been measured in the space-like q2 range 0.015–0.10 (GeV/c)2 by the direct scattering of 250 GeV kaons from electrons at the CERN SPS. It is found that the kaon mean square charge radius 〈r2K〉 = 0.34 ± 0.05 fm2. From data collected simultaneously for πe scattering, the difference between the charged pion and kaon mean square radii (which is less sensitive to systematic errors) is found to be 〈r2π〉 − 〈r2K> = 0.1 0 ± 0.045 fm2.
A measurement of the kaon charge radius / S.R. Amendolia, G. Batignani, G. A. Beck, E. Bellamy, E. Bertolucci, G. Bologna, L. Bosisio, C. Bradaschia, M. Budinich, M. Dellorso, B. D'Etorre Piazzoli, F.L. Fabbri, F. Fidecaro, L. Foa, E. Focardi, S. Frank, P. Gianetti, A. Giazzotto, M. A. Giorgi, M.J. Green, G.P. Heath, M. P.J. Landon, P. Laurelli, F. Liello, G. Mannocchi, P.V. March, P. S. Marrocchesi, A. Menzione, E. Meroni, P. Picchi, F. Ragusa, L. Ristori, L. Rolandi, A. Scribano, A. Stefanini, D. Storey, J. A. Strong, R. Tenchini, G. Tonelli, G. Triggiani, W. Vonschlippe, A. Zallo. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 178:4(1986), pp. 435-440.
A measurement of the kaon charge radius
E. Meroni;F. Ragusa;
1986
Abstract
The negative kaon electromagnetic form factor has been measured in the space-like q2 range 0.015–0.10 (GeV/c)2 by the direct scattering of 250 GeV kaons from electrons at the CERN SPS. It is found that the kaon mean square charge radius 〈r2K〉 = 0.34 ± 0.05 fm2. From data collected simultaneously for πe scattering, the difference between the charged pion and kaon mean square radii (which is less sensitive to systematic errors) is found to be 〈r2π〉 − 〈r2K> = 0.1 0 ± 0.045 fm2.
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