Measurement of the ratio Γ (KL → π+ π-) / Γ (KL → π± e∓ ν) and extraction of the CP violation parameter | η+ - |

Measurement of the ratio Γ (KL → π+ π-) / Γ (KL → π± e∓ ν) and extraction of the CP violation parameter | η+ - |

We present a measurement of the ratio of the decay rates Γ (KL → π+ π-) / Γ (KL → π± e∓ ν), denoted as ΓK 2 π / ΓK e 3. The analysis is based on data taken during a dedicated run in 1999 by the NA48 experiment at the CERN SPS. Using a sample of 47 000 K2 π and five million Ke 3 decays, we find ΓK 2...

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Bibliographic Details
Main Authors: Lai, A, Marras, D, Bevan, A, Dosanjh, R, Gershon, T, Hay, B, Kalmus, G, Lazzeroni, C, Munday, D, Olaiya, E, Parker, M, White, T, Wotton, SA, Barr, G, Bocquet, G, Ceccucci, A, Cuhadar-Dönszelmann, T, Cundy, D, D'Agostini, G, Doble, N, Falaleev, V, Gatignon, L, Gonidec, A, Gorini, B, Govi, G
Format: Journal article
Language:English
Published: 2007

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