Physics of Atomic Nuclei

, Volume 65, Issue 3, pp 513–520 | Cite as

Muon transverse polarization in \(K_{l2_\gamma } \) decay due to the electromagnetic final-state interaction

  • V. V. Braguta
  • A. A. Likhoded
  • A. E. Chalov
Elementary Particles and Fields Theory


For the decay process K+μ+νγ, the effect of muon transverse polarization caused by electromagnetic final-state interaction is analyzed. It is shown that, in the one-loop approximation, the muon transverse polarization varies from −1.3×10−3 to zero in the region of the Dalitz plot. The mean value of the muon polarization, 〈PT〉, in the kinematical region E γ ≥20 MeV is −5.44×10−4.


Elementary Particle Decay Process Kinematical Region Dalitz Plot Transverse Polarization 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    S. Weinberg, Phys. Rev. Lett. 37, 657 (1976).CrossRefADSGoogle Scholar
  2. 2.
    A. Likhoded, V. Braguta, and A. Chalov, hep-ex/0011033.Google Scholar
  3. 3.
    J. F. Donoghue and B. Holstein, Phys. Lett. B 113B, 382 (1982); L. Wolfenstein, Phys. Rev. D 29, 2130 (1984); G. Barenboim et al., Phys. Rev. D 55, 4213 (1997).ADSGoogle Scholar
  4. 4.
    M. Kobayashi, T.-T. Lin, and Y. Okada, Prog. Theor. Phys. 95, 361 (1996); R. Garisto and G. Kane, Phys. Rev. D 44, 2038 (1991); G. Belanger and C. Q. Cheng, Phys. Rev. D 44, 2789 (1991).CrossRefADSGoogle Scholar
  5. 5.
    V. F. Obraztsov, hep-ex/0011033 (OKA experiment).Google Scholar
  6. 6.
    V. P. Efrosinin and Yu. G. Kudenko, Yad. Fiz. 62, 1054 (1999) [Phys. At. Nucl. 62, 987 (1999)].Google Scholar
  7. 7.
    L. B. Okun’ and I. B. Khriplovich, Yad. Fiz. 6, 821 (1966) [Sov. J. Nucl. Phys. 6, 598 (1967)].Google Scholar
  8. 8.
    J. Bijnens, G. Ecker, and J. Gasser, Nucl. Phys. B 396, 81 (1993).CrossRefADSGoogle Scholar
  9. 9.
    Particle Data Group (D. E. Groom et al.), Eur. Phys. J. C 15, (2000).Google Scholar

Copyright information

© MAIK "Nauka/Interperiodica" 2002

Authors and Affiliations

  • V. V. Braguta
    • 1
  • A. A. Likhoded
    • 1
  • A. E. Chalov
    • 1
  1. 1.Institute for High Energy PhysicsProtvino, Moscow oblastRussia

Personalised recommendations