Direct Measurement Of Pi-Form Factor

E. Dally,D. Drickey,J. Hauptman,C. May,D. Stork,J. Poirier,C. Rey,R. Wojslaw,P. Shepard,A. Lennox,J. Tompkins,T. Toohig,A. Wehmann,I. Ioan,T. Nigmanov,E. Tsyganov,A. Vodopianov

PHYSICAL REVIEW LETTERS（1977）

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摘要

We have measured the electromagnetic form factor of the charged pion by direct scattering of 100-GeV/c ..pi../sup -/ 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 \u003c r/sup 2//sub ..pi../1/2 = 0.56 +- 0.04 F.

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关键词

form factor,elastic scattering,elementary particles,root mean square,cross section

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