Measurement of theKμ30Ke30Branching Ratio, theKl30Form Factors, and theKπ30Decay Parameters
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1973
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Abstract
In a hydrogen bubble-chamber experiment with a KL beam we have measured the Kμ30Ke30 branching ratio to be R=0.741±0.044 and the slope of the f+ form factor to be λ+=0.019±0.013. The data have been analyzed with a new variable, (pT′)2, which isolates a sample of unique Ke3 decays and is independent of the KL beam momentum. These results are compatible with the predictions of K* dominance for f+ and the Callan-Treiman relation for f0, but indicate a breaking of the ΔI=12 rule. We have also determined the (KL→π+π−π0)(allcharged KL decays) branching ratio to be Rπ=0.146±0.004, and have found the Eπ0* slope of the Kπ3 Dalitz plot to be given by g=0.73±0.04.
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| Authors | G. W. Brandenburg,W. B. Johnson,D. W. G. S. Leith,J. S. Loos,J. A. J. Matthews,F. C. Winkelmann,R. J. Yamartino;G. W. Brandenburg;W. B. Johnson;D. W. G. S. Leith;J. S. Loos;J. A. J. Matthews;F. C. Winkelmann;R. J. Yamartino; |
| Journal | physical review d |
| Year | 1973 |
| DOI |
10.1103/physrevd.8.1978
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