M. Knecht

Radiative corrections to \(K_{\ell 3}\) decays

Abstract. We present a complete calculation of the

Radiative corrections to K(l3) decays

K_{\ell 3}

Chiral perturbation theory with virtual photons and leptons

decays

The Dalitz decay π0 → e+e– γ revisited

K^+ \to \pi^0 \ell^+ \nu_{\ell}

The pionic beta decay in chiral perturbation theory

and

Electromagnetic corrections to gamma pi+- ---> pi0 pi+-

K^0 \to \pi^- \ell^+ \nu_\ell

Contributions of order O ( m quark 2 ) to K l 3 form factors and unitarity of the CKM matrix

to

Low-energy photon-photon fusion into three pions in generalized chiral perturbation theory

\mathcal O(p^4, (m_d-m_u) p^2, e^2 p^2)

Dispersive representation of K -> 3 pi amplitudes and cusps

in chiral perturbation theory with virtual photons and leptons. We introduce the concept of generalized form factors and kinematical densities in the presence of electromagnetism, and propose a possible treatment of the real photon emission in

A possible experimental determination of

K^+_{\ell 3}