Measurement of the decay rate and the parameter αK* of the decay KL → μμγ View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1997-12

AUTHORS

V. Fanti, A. Lai, L. Musa, A. Nappi, M.G. Setzu

ABSTRACT

The rate of the decay of the neutral K meson into KL0 → μμγ has been measured with the NA48 detector at the CERN SPS. A total of 59 events has been observed with an estimated background of 14 events. The overall Kaon flux was determined to be 1.2 × 109. This observation corresponds to a branching ratio of (3.4 ± 0.6stat ± 0.4sys × 10-7. Using this branching ratio the parameter αK* describing the relative strength of the two contributing amplitudes to this decay, through intermediate pseudoscalar or vectorlike mesons, was measured to be αK* = -0.04+-0.21+0.24. More... »

PAGES

653-657

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s002880050587

DOI

http://dx.doi.org/10.1007/s002880050587

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1044967990


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