Measurement of the branching ratio of the decay KL→ π±e∓ν and extraction of the CKM parameter |Vus|

Measurement of the branching ratio of the decay KL→ π±e∓ν and extraction of the CKM parameter |Vus|

We present a new measurement of the branching ratio R of the decay K L→ pi;±e∓ν, denoted as Ke3, relative to all charged KL decays with two tracks, based on data taken with the NA48 detector at the CERN SPS. We measure R=0.4978±0. 0035. From this we derive the Ke3 branching fraction and the weak cou...

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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: 2004

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