Measurements of charged kaon semileptonic decay branching fractions K±→π0μ±ν and K±→π0e±ν and their ratio

J.R. Batley; C. Lazzeroni; D.J. Munday; M.W. Slater; S.A. Wotton; 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; 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; E. Monnier; E. Swallow; R. Winston; P. Rubin; A. Walker; W. Baldini; A. Cotta Ramusino; P. Dalpiaz; C. Damiani; M. Fiorini; A. Gianoli; M. Martini; F. Petrucci; M. Savrié; M. Scarpa; H. Wahl; A. Bizzeti; M. Calvetti; E. Celeghini; E. Iacopini; M. Lenti; F. Martelli; G. Ruggiero; M. Veltri; M. Behler; K. Eppard; K. Kleinknecht; P. Marouelli; L. Masetti; U. Moosbrugger; C. Morales Morales; B. Renk; M. Wache; R. Wanke; A. Winhart; D. Coward; A. Dabrowski; T. Fonseca Martin; M. Shieh; M. Szleper; M. Velasco; M.D. Wood; G. Anzivino; P. Cenci; E. Imbergamo; M. Pepe; M.C. Petrucci; M. Piccini; M. Raggi; M. Valdata-Nappi; 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; B. Bloch-Devaux; C. Cheshkov; J.B. Chèze; M. De Beer; J. Derré; G. Marel; E. Mazzucato; B. Peyaud; B. Vallage; M. Holder; A. Maier; M. Ziolkowski; S. Bifani; C. Biino; N. Cartiglia; M. Clemencic; S. Goy Lopez; F. Marchetto; H. Dibon; M. Jeitler; M. Markytan; I. Mikulec; G. Neuhofer; L. Widhalm

doi:10.1140/epjc/s10052-007-0454-9

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Erratum

This article is an erratum for:
[https://doi.org/10.1140/epjc/s10052-007-0253-3]

Eur. Phys. J. C (2007) 52: 1021-1023
https://doi.org/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

J.R. Batley¹, C. Lazzeroni¹, D.J. Munday¹, M.W. Slater¹, S.A. Wotton¹, R. Arcidiacono²^,16, G. Bocquet², N. Cabibbo², A. Ceccucci², D. Cundy²^,17, V. Falaleev², M. Fidecaro², L. Gatignon², A. Gonidec², W. Kubischta², A. Norton²^,18, M. Patel², A. Peters², S. Balev³, P.L. Frabetti³, E. Goudzovski³, P. Hristov³^,19, V. Kekelidze³^,19, V. Kozhuharov³, L. Litov³, D. Madigozhin³, E. Marinova³, N. Molokanova³, I. Polenkevich³, Y. Potrebenikov³, S. Stoynev³^,20, A. Zinchenko³, E. Monnier⁴^,21, E. Swallow⁴, R. Winston⁴, P. Rubin⁵, A. Walker⁵, W. Baldini⁶, A. Cotta Ramusino⁶, P. Dalpiaz⁶, C. Damiani⁶, M. Fiorini⁶, A. Gianoli⁶, M. Martini⁶, F. Petrucci⁶, M. Savrié⁶, M. Scarpa⁶, H. Wahl⁶, A. Bizzeti⁷^,22, M. Calvetti⁷, E. Celeghini⁷, E. Iacopini⁷, M. Lenti⁷, F. Martelli⁷^,23, G. Ruggiero⁷^,19, M. Veltri⁷^,23, M. Behler⁸, K. Eppard⁸, K. Kleinknecht⁸, P. Marouelli⁸, L. Masetti⁸, U. Moosbrugger⁸, C. Morales Morales⁸, B. Renk⁸, M. Wache⁸, R. Wanke⁸, A. Winhart⁸, D. Coward⁹^,24, A. Dabrowski⁹^*, T. Fonseca Martin⁹^,19, M. Shieh⁹, M. Szleper⁹, M. Velasco⁹, M.D. Wood⁹^,25, G. Anzivino¹⁰, P. Cenci¹⁰, E. Imbergamo¹⁰, M. Pepe¹⁰, M.C. Petrucci¹⁰, M. Piccini¹⁰^,19, M. Raggi¹⁰, M. Valdata-Nappi¹⁰, C. Cerri¹¹, G. Collazuol¹¹, F. Costantini¹¹, L. DiLella¹¹, N. Doble¹¹, R. Fantechi¹¹, L. Fiorini¹¹^,26, S. Giudici¹¹, G. Lamanna¹¹, I. Mannelli¹¹, A. Michetti¹¹, G. Pierazzini¹¹, M. Sozzi¹¹, B. Bloch-Devaux¹², C. Cheshkov¹²^,19, J.B. Chèze¹², M. De Beer¹², J. Derré¹², G. Marel¹², E. Mazzucato¹², B. Peyaud¹², B. Vallage¹², M. Holder¹³, A. Maier¹³^,19, M. Ziolkowski¹³, S. Bifani¹⁴, C. Biino¹⁴, N. Cartiglia¹⁴, M. Clemencic¹⁴^,19, S. Goy Lopez¹⁴, F. Marchetto¹⁴, H. Dibon¹⁵, M. Jeitler¹⁵, M. Markytan¹⁵, I. Mikulec¹⁵, G. Neuhofer¹⁵, L. Widhalm¹⁵ and The NA48/2 Collaboration

¹ Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
² CERN, 1211, Geneva 23, Switzerland
³ Joint Institute for Nuclear Research, Dubna, Russian Federation
⁴ The Enrico Fermi Institute, The University of Chicago, Chicago, IL, 60126, USA
⁵ Department of Physics and Astronomy, University of Edinburgh, JCMB King’s Buildings, Mayfield Road, Edinburgh, EH9 3JZ, UK
⁶ Dipartimento di Fisica, Università e Sezione dell’INFN di Ferrara, 44100, Ferrara, Italy
⁷ Dipartimento di Fisica, Università e Sezione dell’INFN di Firenze, 50125, Firenze, Italy
⁸ Institut für Physik, Universität Mainz, 55099, Mainz, Germany
⁹ Department of Physics and Astronomy, Northwestern University, 2145 Sheriden Rd., Evanston, IL, 60208-3112, USA
¹⁰ Dipartimento di Fisica, Università e Sezione dell’INFN di Perugia, 06100, Perugia, Italy
¹¹ Dipartimento di Fisica, Scuola Normale Superiore e Sezione dell’INFN di Pisa, 56100, Pisa, Italy
¹² DSM/DAPNIA – CEA Saclay, 91191, Gif-sur-Yvette, France
¹³ Fachbereich Physik, Universität Siegen, 57068, Siegen, Germany
¹⁴ Dipartimento di Fisica Sperimentale, Università e Sezione dell’INFN di Torino, 10125, Torino, Italy
¹⁵ Institut für Hochenergiephysik, Österreichische Akademie der Wissenschaften, 10560, Wien, Austria
¹⁶ Dipartimento di Fisica Sperimentale, Universit Sezione dell’INFN di Torino, 10125, Torino, Italy
¹⁷ Istituto di Cosmogeofisica, CNR di Torino, 10133, Torino, Italy
¹⁸ Dipartimento di Fisica, Università e Sezione Ferrara, 44100, Ferrara, Italy
¹⁹ CERN, 1211, Geneva 23, Switzerland
²⁰ Department of Physics and Astronomy, Northwestern University, Evanston, IL, 60208-3112, USA
²¹ Centre de Physique des Particules de Marseille, IN2P3-CNRS, Université de la Méditerranée, Marseille, France
²² Dipartimento di Fisica, Università di Modena, 41100, Modena, Italy
²³ Istituto di Fisica, Università di Urbino, 61029, Urbino, Italy
²⁴ SLAC, Stanford University, Menlo Park, CA, 94025, USA
²⁵ UCLA, Los Angeles, CA, 90024, USA
²⁶ Institut de Fisica d RAltes Energies, Universitat A Barcelona, 08193, Bellaterra (Barcelona), Spain

^* e-mail: anne@lotus.phys.northwestern.edu

Received: 5 October 2007
Published online: 1 November 2007

Abstract

In an earlier paper [1], the background for K_e3 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 K_2π branching ratio, the measured branching fraction of Br (K_e3) continues to exceed the current PDG value [2]. The extracted value of |V_us|f₊(0) is in agreement with the CKM unitary prediction; thus, our conclusions in [1] do not change.

Erratum for: 10.1140/epjc/s10052-007-0253-3

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