An experimental study of the form factor in the decay K+ → πoe+ν

H. Braun,M. Cornelssen,H.U. Martyn,O. Erriquez,S. Natali,Francesco Romano, D. Bertrand,M. Csejthey-Barth, Jacques Lemonne,P. B. Renton, Pierre Vilain,D.C. Cundy,T.I. Pedersen,D. Waldren

Physics Letters B（1973）

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Abstract

Abstract The q2 variation of the factor ƒ + (q 2 ) in the decay K+→π0e+ν has been studied using a sample of even detected in the CERN 1.1 m3 heavy-liquid bubble chamber. The data are consistent with a linear development ƒ + (q 2 )=ƒ + (0) (1+λ + q/m 2 π ) with λ+=0.027±0.008.

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Key words

decay,form factor

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