In an earlier paper [1], the background for Ke3 was over estimated due to an erroneous calcula-tion of the electron identification efficiency. The correct ratios of the partial widths involving this channelare RKe3/K2π = 0.2470 ± 0.0009 (stat) ± 0.0004 (syst) and RKμ3/Ke3 = 0.663 ± 0.003 (stat) ± 0.001 (syst).Assuming the PDG value [2] for the K2π branching ratio, the measured branching fraction of Br (Ke3 ) con-tinues to exceed the current PDG value [2]. The extracted value of |Vus |f+ (0) is in agreement with the CKMunitary prediction; thus, our conclusions in [1] do not change.
Erratum: Measurements of charged kaon semileptonic decay branching fractions K±→π0μ±ν and K±→π0e±ν and their ratio (European Physical Journal C (2007) 50, (329-340) DOI: 10.1140/epjc/s10052-007-0253-3) / J. R., B., C., L., D. J., M., M. W., S., S. A., W., R., A., G., B., N., C., A., C., D., C., V., F., M., F., L., G., A., G., W., K., A., N., M., P., A., P., S., B., P. L., F., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - STAMPA. - 52:4(2007), pp. 1021-1023. [10.1140/epjc/s10052-007-0454-9]
Erratum: Measurements of charged kaon semileptonic decay branching fractions K±→π0μ±ν and K±→π0e±ν and their ratio (European Physical Journal C (2007) 50, (329-340) DOI: 10.1140/epjc/s10052-007-0253-3)
BIZZETI, Andrea;
2007
Abstract
In an earlier paper [1], the background for Ke3 was over estimated due to an erroneous calcula-tion of the electron identification efficiency. The correct ratios of the partial widths involving this channelare RKe3/K2π = 0.2470 ± 0.0009 (stat) ± 0.0004 (syst) and RKμ3/Ke3 = 0.663 ± 0.003 (stat) ± 0.001 (syst).Assuming the PDG value [2] for the K2π branching ratio, the measured branching fraction of Br (Ke3 ) con-tinues to exceed the current PDG value [2]. The extracted value of |Vus |f+ (0) is in agreement with the CKMunitary prediction; thus, our conclusions in [1] do not change.| File | Dimensione | Formato | |
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