Abstract
A measurement of the form factors of charged kaon semileptonic decays is presented, based on 4.4 × 106K± → π0e±νe (K ± e3 ) and 2.3 × 106K± → π0μ±νμ (K ± μ3 ) decays collected in 2004 by the NA48/2 experiment. The results are obtained with improved precision as compared to earlier measurements. The combination of measurements in the K ± e3 and K ± μ3 modes is also presented.
Article PDF
Similar content being viewed by others
References
NA48/2 collaboration, J.R. Batley et al., Search for direct CP-violating charge asymmetries in K ± → π ± π + π − and K ± → π ± π 0 π 0 decays, Eur. Phys. J. C 52 (2007) 875 [arXiv:0707.0697] [INSPIRE].
FlaviaNet Working Group on Kaon Decays collaboration, M. Antonelli et al., An evaluation of |V us| and precise tests of the Standard Model from world data on leptonic and semileptonic kaon decays, Eur. Phys. J. C 69 (2010) 399 [arXiv:1005.2323] [INSPIRE].
L.M. Chounet, J.-M. Gaillard and M.-K. Gaillard, Leptonic decays of hadrons, Phys. Rept. 4 (1972) 199 [INSPIRE].
Particle Data Group collaboration, M. Tanabashi et al., Review of particle physics, Phys. Rev. D 98 (2018) 030001 [INSPIRE].
P. Dennery and H. Primakoff, Three-body leptonic decays of the K mesons, Phys. Rev. 131 (1963) 1334.
P. Lichard, Some implications of meson dominance in weak interactions, Phys. Rev. D 55 (1997) 5385 [hep-ph/9702345] [INSPIRE].
V. Bernard, M. Oertel, E. Passemar and J. Stern, Dispersive representation and shape of the K l3 form factors: robustness, Phys. Rev. D 80 (2009) 034034 [arXiv:0903.1654] [INSPIRE].
NA48 collaboration, V. Fanti et al., The beam and detector for the NA48 neutral kaon CP-violations experiment at CERN, Nucl. Instrum. Meth. A 574 (2007) 433 [INSPIRE].
R. Brun et al., GEANT detector description and simulation tool, CERN program library long writeup CERN-W5013, CERN, Geneva, Switzerland, (1994) [INSPIRE].
C. Gatti, Monte Carlo simulation for radiative kaon decays, Eur. Phys. J. C 45 (2006) 417 [hep-ph/0507280] [INSPIRE].
S. Weinberg, Infrared photons and gravitons, Phys. Rev. 140 (1965) B516 [INSPIRE].
KTeV collaboration, T. Alexopoulos et al., Measurements of the branching fractions and decay distributions for K L → π ± μ ∓ νγ and K L → π ± e ∓ νγ, Phys. Rev. D 71 (2005) 012001 [hep-ex/0410070] [INSPIRE].
NA48 collaboration, A. Lai et al., Measurement of the radiative K e3 branching ratio, Phys. Lett. B 605 (2005) 247 [hep-ex/0411069] [INSPIRE].
V. Cirigliano, M. Knecht, H. Neufeld, H. Rupertsberger and P. Talavera, Radiative corrections to K l3 decays, Eur. Phys. J. C 23 (2002) 121 [hep-ph/0110153] [INSPIRE].
J.R. Batley et al., Determination of the S-wave ππ scattering lengths from a study of K ± → π ± π 0 π 0 decays, Eur. Phys. J. C 64 (2009) 589 [arXiv:0912.2165] [INSPIRE].
KTeV collaboration, T. Alexopoulos et al., Measurements of semileptonic K L decay form-factors, Phys. Rev. D 70 (2004) 092007 [hep-ex/0406003] [INSPIRE].
KLOE collaboration, F. Ambrosino et al., Measurement of the form-factor slopes for the decay K L → π ± e ∓ ν with the KLOE detector, Phys. Lett. B 636 (2006) 166 [hep-ex/0601038] [INSPIRE].
KLOE collaboration, F. Ambrosino et al., Measurement of the K L → πμν form-factor parameters with the KLOE detector, JHEP 12 (2007) 105 [arXiv:0710.4470] [INSPIRE].
NA48 collaboration, A. Lai et al., Measurement of K 0 e3 form-factors, Phys. Lett. B 604 (2004) 1 [hep-ex/0410065] [INSPIRE].
NA48 collaboration, A. Lai et al., Measurement of K 0 μ3 form factors, Phys. Lett. B 647 (2007) 341 [hep-ex/0703002] [INSPIRE].
ISTRA+ collaboration, O.P. Yushchenko et al., High statistic study of the K − → π 0 μ − ν decay, Phys. Lett. B 581 (2004) 31 [hep-ex/0312004] [INSPIRE].
ISTRA+ collaboration, O.P. Yushchenko et al., High statistic measurement of the K − → π 0 e − ν decay form-factors, Phys. Lett. B 589 (2004) 111 [hep-ex/0404030] [INSPIRE].
Open Access
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Author information
Authors and Affiliations
Consortia
Corresponding authors
Additional information
ArXiv ePrint: 1808.09041
Deceased (N. Cabibbo, S. Balev, A. Zinchenko, E. Swallow, A. Nappi, G. Pierazzini, L. Widhalm)
Supported by a Royal Society University Research Fellowship (UF100308, UF0758946) (C. Lazzeroni, E. Goudzovski)
Funded by the U.K. Particle Physics and Astronomy Research Council, grant PPA/G/O/1999/00559 (Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, U.K.)
Supported by ERC Starting Grant 336581 (E. Goudzovski)
Funded by the Bulgarian National Science Fund under contract DID02-22 (V. Kozhuharov, L. Litov)
Funded by the German Federal Minister for Education and research under contract 05HK1UM1/1 (Institut für Physik, Universität Mainz, D-55099 Mainz, Germany)
Funded by the German Federal Minister for Research and Technology (BMBF) under contract 056SI74 (Fachbereich Physik, Universität Siegen, D-57068 Siegen, Germany)
Funded by the Austrian Ministry for Traffic and Research under the contract GZ 616.360/2-IV GZ 616.363/2-VIII, and by the Fonds für Wissenschaft und Forschung FWF Nr. P08929-PHY (Österreichische Akademie der Wissenschaften, Institut für Hochenergiephysik, A-10560 Wien, Austria)
Rights and permissions
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.
The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/.
About this article
Cite this article
The NA48/2 collaboration., Batley, J.R., Kalmus, G. et al. Measurement of the form factors of charged kaon semileptonic decays. J. High Energ. Phys. 2018, 150 (2018). https://doi.org/10.1007/JHEP10(2018)150
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP10(2018)150