A measurement of the decay KL→π0γγ
Copyright policy ) G.D. Barr; P. Buchholz; R. Carosi; D. Coward; D. Cundy; N. Doble; L. Gatignon; P. Grafström; R. Hagelberg; H.H. Nelson; H. Wahl; K.J. Peach; H. Blümer; R. Heinz; K. Kleinknecht; P. Mayer; B. Panzer; B. Renk; H. Rohrer; A. Wagner; E. Augé; D. Fournier; L. Iconomidou-Fayard; I. Harrus; O. Perdereau; A.C. Schaffer; L. Serin; L. Bertanza; A. Bigi; P. Calafiura; M. Calvetti; R. Casali; I.G. Mannelli; V.M. Marzulli; A. Nappi; G. Pierazzini; M. Holder; A. Kreutz; M. Rost; R. Werthenbach;
A measurement of the decay KL→π0γγ
Abstract The full data set of the experiment NA31 at CERN has been used to analyse the decay mode KL→π0γγ. A signal of 63 events has been observed with an estimated background of 6.0±1.7 events, corresponding to a branching ratio of (1.7±0.3)×10−6 consistent with our previous result based on partial statistics. The invariant mass spectrum of the two photons is found to be consistent with chiral perturbation theory, and the decay is dominated by the J = 0 two photon state.
United Kingdom
- Johannes Gutenberg University of Mainz Germany
- Folkwang University of the Arts Germany
- University of Edinburgh United Kingdom
- University of Paris-Sud France
- European Organization for Nuclear Research Switzerland
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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