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

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 pseudosc...

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Journal:
Zeitschrift fur Physik C-Particles and Fields
Volume:
76
Issue:
4
Pages:
653-657
Publication date:
1997-12-05
ISSN:
0170-9739
URN:
uuid:099f1286-e7b4-4ff6-b0dd-8b7d1b65fc49
Source identifiers:
345303
Local pid:
pubs:345303
Language:
English

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