Measurement of the Branching Ratio and Positron Momentum Spectrum for the Decay K0→π0+e++ν

Measurement of the Branching Ratio and Positron Momentum Spectrum for the Decay K0→π0+e++ν

The branching ratio and positron momentum spectrum have been measured for the Ke3+ decay mode. The shape of the momentum spectrum, containing 17 000 events, is consistent with pure vector coupling with a form-factor momentum dependence given by λ+=0.08±0.04. Upper limits on a possible mixture of sca...

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Veröffentlicht in:Physical review 1968-10, Vol.174 (5)
Hauptverfasser: Botterill, D. R., Brown, R. M., Clegg, A. B., Corbett, I. F., Culligan, G., Emmerson, J. McL, Field, R. C., Garvey, J., Jones, P. B., Middlemas, N., Newton, D., Quirk, T. W., Salmon, G. L., Steinberg, P., Williams, W. S. C.
Format: Artikel
Sprache:eng
Schlagworte:
BRANCHING RATIO
COUPLING
DECAY
FORM FACTOR
KAONS
KAONS-PLUS
MATHEMATICS
MEASUREMENT
MESONS (K$sup 0$)/decay K$sup 0$ $Yields$ $pi$$sup 0$ + e$sup +$ + $nu$, branching ratio and positron momentum spectrum for, (E)
MOMENTUM
N34120 -Physics (High Energy)-Particle Interactions & Properties (Experimental)-Weak
NEUTRINOS
PIONS
PIONS-NEUTRAL
POSITRONS
QUANTUM MECHANICS
SELECTION RULES
SPECTRA
TENSORS
TRANSIENTS
VECTORS
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Beschreibung
Zusammenfassung:The branching ratio and positron momentum spectrum have been measured for the Ke3+ decay mode. The shape of the momentum spectrum, containing 17 000 events, is consistent with pure vector coupling with a form-factor momentum dependence given by λ+=0.08±0.04. Upper limits on a possible mixture of scalar or tensor coupling are, respectively, |fS/f+|
ISSN:0031-899X
1536-6065
DOI:10.1103/PhysRev.174.1661