Wide-gap spark chamber study of K/sub L/$sup 0$ $Yields$ $pi$$sup +-$ + e$sup +-$ + $nu$ decay. Technical report No. 73-033
L. Wang · 1971
A wide-gap spark chamber operated tn a magnetic f i e l d of 10 KG has been used to measure the energy dependence of the form f a c t o r f+(q*) in decay.Decays of K£ meson in a vacuum box were detected in the -30® neutral beam of the AGS at Brookhaven National Laboratory.Ke3 decays were I d e n t i f i e d by e l e c t r o m a g n e t i c showers produced in a lead radiator p l a t e between the two 12-Inch gaps of the chamber.The l i n e a r parameter of the form f a c t o r f + ( q * } i s determined to be Q.0*f0 ± 0,013 where the error includes p o s s i b l e s y s t e m a t i c e r r o r s .A v a r i e t y of other forms f o r the energy dependence were a l s o s t u d i e d .