Extraction of Kaon Formfactors from K^- -> mu^- nu_mu gamma Decay at ISTRA+ Setup

Abstract

The radiative decay K->mu nu gamma has been studied at ISTRA+ setup in a new kinematical region. About 22K events of K^- -> mu^- nu_mu gamma have been observed. The sign and value of Fv-Fa have been measured for the first time. The result is Fv-Fa=0.21(4)(4).

11 pages, 21 figures, submitted to Phys. Lett. B

References in corpus (3)

• Precise measurement of B(K\to eν(γ))/B(K\to μν(γ)) and study of K\to eνγ
• Analysis of $K^{+}\to e^{+}{\nu }_e\gamma$ in light-front quark model and chiral perturbation theory of order $p^6$
• Observation of the destructive interference in the radiative kaon decay K- --> mu-nugamma

Cited by in corpus (8)

• Kaon Decays in the Standard Model
• Experiments with K-Meson Decays
• Comparison of lattice QCD+QED predictions for radiative leptonic decays of light mesons with experimental data
• Methods for high-precision determinations of radiative-leptonic decay form factors using lattice QCD
• Search for Heavy Neutrino in K->mu nu_h(nu_h-> nu gamma) Decay at ISTRA+ Setup
• Measurement of the $K^{+}\to {\mu }^{+}{\nu }_{\mu }\gamma$ decay form factors in the OKA experiment
• Vector and Axial-vector form factors in radiative kaon decay and flavor SU(3) symmetry breaking
• Kaon radiative leptonic decay rates from lattice QCD simulations at the physical point