The decay rate of K-S --> gamma gamma has been measured with the NA48 detector at the CERN SPS. A total of 149 K-S --> gamma gamma events have been observed. The branching ratio is determined to be (2.58 +/- 0.36(stat) +/- 0.22(sys)) x 10(-6). (C) 2000 Elsevier Science B.V. All rights reserved.
A new measurement of the branching ratio of K-S -> gamma gamma
MENICHETTI, Ezio;
2000-01-01
Abstract
The decay rate of K-S --> gamma gamma has been measured with the NA48 detector at the CERN SPS. A total of 149 K-S --> gamma gamma events have been observed. The branching ratio is determined to be (2.58 +/- 0.36(stat) +/- 0.22(sys)) x 10(-6). (C) 2000 Elsevier Science B.V. All rights reserved.
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