Precise measurements of the KS → γγ and KL → γγ decay rates

Precise measurements of the KS → γγ and KL → γγ decay rates

The KS → γγ decay rate has been measured with the NA48 detector using a high intensity short neutral beam from the CERN SPS. The measured branching ratio BR(KS → γγ) = (2.78 ± 0.06stat ± 0.04syst) x 10-6, obtained from 7461 ± 172 KS → γγ events, is significantly higher than the O(p4) prediction of c...

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Hlavní autoři: Lai, A, Marras, D, Batley, JR, Dosanjh, R, Gershon, T, Kalmus, G, Lazzeroni, C, Munday, D, Olaiya, E, Parker, M, White, T, Wotton, SA, Arcidiacono, R, Barr, G, Bocquet, G, Ceccucci, A, Cuhadar-Dönszelmann, T, Cundy, D, Doble, N, Falaleev, V, Gatignon, L, Gonidec, A, Gorini, B, Grafström, P, Kubischta, W
Médium: Journal article
Jazyk:English
Vydáno: 2003

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