Abstract
In an earlier paper [1], the background for Ke3 was over estimated due to an erroneous calculation of the electron identification efficiency. The correct ratios of the partial widths involving this channel are \(\mathcal{R}_{K e 3 / K2\pi} = 0.2470\pm0.0009\, ({\text{stat}})\pm0.0004\, ({\text{syst}})\) and \(\mathcal{R}_{K \mu3 / Ke3} = 0.663\pm0.003\,({\text{stat}})\pm0.001\,({\text{syst}})\). Assuming the PDG value [2] for the K2π branching ratio, the measured branching fraction of Br (Ke3) continues to exceed the current PDG value [2]. The extracted value of |Vus|f+(0) is in agreement with the CKM unitary prediction; thus, our conclusions in [1] do not change.
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References
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Authors and Affiliations
Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
J.R. Batley, C. Lazzeroni, D.J. Munday, M.W. Slater & S.A. Wotton
CERN, 1211, Geneva 23, Switzerland
R. Arcidiacono, G. Bocquet, N. Cabibbo, A. Ceccucci, D. Cundy, V. Falaleev, M. Fidecaro, L. Gatignon, A. Gonidec, W. Kubischta, A. Norton, M. Patel & A. Peters
Joint Institute for Nuclear Research, Dubna, Russian Federation
S. Balev, P.L. Frabetti, E. Goudzovski, P. Hristov, V. Kekelidze, V. Kozhuharov, L. Litov, D. Madigozhin, E. Marinova, N. Molokanova, I. Polenkevich, Y. Potrebenikov, S. Stoynev & A. Zinchenko
The Enrico Fermi Institute, The University of Chicago, Chicago, IL, 60126, USA
E. Monnier, E. Swallow & R. Winston
Department of Physics and Astronomy, University of Edinburgh, JCMB King’s Buildings, Mayfield Road, Edinburgh, EH9 3JZ, UK
P. Rubin & A. Walker
Dipartimento di Fisica, Università e Sezione dell’INFN di Ferrara, 44100, Ferrara, Italy
W. Baldini, A. Cotta Ramusino, P. Dalpiaz, C. Damiani, M. Fiorini, A. Gianoli, M. Martini, F. Petrucci, M. Savrié, M. Scarpa & H. Wahl
Dipartimento di Fisica, Università e Sezione dell’INFN di Firenze, 50125, Firenze, Italy
A. Bizzeti, M. Calvetti, E. Celeghini, E. Iacopini, M. Lenti, F. Martelli, G. Ruggiero & M. Veltri
Institut für Physik, Universität Mainz, 55099, Mainz, Germany
M. Behler, K. Eppard, K. Kleinknecht, P. Marouelli, L. Masetti, U. Moosbrugger, C. Morales Morales, B. Renk, M. Wache, R. Wanke & A. Winhart
Department of Physics and Astronomy, Northwestern University, 2145 Sheriden Rd., Evanston, IL, 60208-3112, USA
D. Coward, A. Dabrowski, T. Fonseca Martin, M. Shieh, M. Szleper, M. Velasco & M.D. Wood
Dipartimento di Fisica, Università e Sezione dell’INFN di Perugia, 06100, Perugia, Italy
G. Anzivino, P. Cenci, E. Imbergamo, M. Pepe, M.C. Petrucci, M. Piccini, M. Raggi & M. Valdata-Nappi
Dipartimento di Fisica, Scuola Normale Superiore e Sezione dell’INFN di Pisa, 56100, Pisa, Italy
C. Cerri, G. Collazuol, F. Costantini, L. DiLella, N. Doble, R. Fantechi, L. Fiorini, S. Giudici, G. Lamanna, I. Mannelli, A. Michetti, G. Pierazzini & M. Sozzi
DSM/DAPNIA – CEA Saclay, 91191, Gif-sur-Yvette, France
B. Bloch-Devaux, C. Cheshkov, J.B. Chèze, M. De Beer, J. Derré, G. Marel, E. Mazzucato, B. Peyaud & B. Vallage
Fachbereich Physik, Universität Siegen, 57068, Siegen, Germany
M. Holder, A. Maier & M. Ziolkowski
Dipartimento di Fisica Sperimentale, Università e Sezione dell’INFN di Torino, 10125, Torino, Italy
S. Bifani, C. Biino, N. Cartiglia, M. Clemencic, S. Goy Lopez & F. Marchetto
Institut für Hochenergiephysik, Österreichische Akademie der Wissenschaften, 10560, Wien, Austria
H. Dibon, M. Jeitler, M. Markytan, I. Mikulec, G. Neuhofer & L. Widhalm
Dipartimento di Fisica Sperimentale, Universit Sezione dell’INFN di Torino, 10125, Torino, Italy
R. Arcidiacono
Istituto di Cosmogeofisica, CNR di Torino, 10133, Torino, Italy
D. Cundy
Dipartimento di Fisica, Università e Sezione Ferrara, 44100, Ferrara, Italy
A. Norton
CERN, 1211, Geneva 23, Switzerland
P. Hristov, V. Kekelidze, G. Ruggiero, T. Fonseca Martin, M. Piccini, C. Cheshkov, A. Maier & M. Clemencic
Department of Physics and Astronomy, Northwestern University, Evanston, IL, 60208-3112, USA
S. Stoynev
Centre de Physique des Particules de Marseille, IN2P3-CNRS, Université de la Méditerranée, Marseille, France
E. Monnier
Dipartimento di Fisica, Università di Modena, 41100, Modena, Italy
A. Bizzeti
Istituto di Fisica, Università di Urbino, 61029, Urbino, Italy
F. Martelli & M. Veltri
SLAC, Stanford University, Menlo Park, CA, 94025, USA
D. Coward
UCLA, Los Angeles, CA, 90024, USA
M.D. Wood
Institut de Fisica d RAltes Energies, Universitat A Barcelona, 08193, Bellaterra (Barcelona), Spain
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Correspondence to A. Dabrowski.
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The online version of the original article can be found at http://dx.doi.org/10.1140/epjc/s10052-007-0253-3
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Batley, J., Lazzeroni, C., Munday, D. et al. Measurements of charged kaon semileptonic decay branching fractions K±→π0μ±ν and K±→π0e±ν and their ratio. Eur. Phys. J. C 52, 1021–1023 (2007). https://doi.org/10.1140/epjc/s10052-007-0454-9
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DOI: https://doi.org/10.1140/epjc/s10052-007-0454-9
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