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Transverse muon polarization in \(K^+\to\mu^+\nu_\mu\gamma\): scanning over the Dalitz plot

  • theoretical physics
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Abstract.

We study the potential of the measurement of the transverse muon polarization P T in the \(K\to\mu\nu_\mu\gamma\) decay with a sensitivity of \(\delta P_{\mathrm {T}}\sim 10^{-4}\). It is shown that the forthcoming experiment can measure the contribution of the electromagnetic final state interactions to P T that gives a possibility to unambiguously determine the signs of the sum of the kaon form factors F V and F A even without fixing their difference. We also estimate the sensitivity of this experiment to the new physics, which could give rise to T-violation: multi-Higgs doublet models, supersymmetric extensions of the Standard Model, left-right symmetric model and leptoquark models.

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Authors and Affiliations

  1. Institute for Nuclear Research of the Russian Academy of Sciences, 60th October Anniversary prospect 7a, 117312, Moscow, Russia

    F. L. Bezrukov, D. S. Gorbunov & Yu G. Kudenko

Authors
  1. F. L. Bezrukov
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  2. D. S. Gorbunov
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  3. Yu G. Kudenko
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Corresponding author

Correspondence to F. L. Bezrukov.

Additional information

Received: 7 May 2003, Revised: 27 June 2003, Published online: 5 September 2003

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Bezrukov, F.L., Gorbunov, D.S. & Kudenko, Y.G. Transverse muon polarization in \(K^+\to\mu^+\nu_\mu\gamma\): scanning over the Dalitz plot. Eur. Phys. J. C 30, 487–496 (2003). https://doi.org/10.1140/epjc/s2003-01297-x

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  • DOI: https://doi.org/10.1140/epjc/s2003-01297-x

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