Chiral dynamics in the meson sector at two loops

• I give a very short introduction to chiral perturbation theory and an overview of the next-to-next-to-leading order three-flavour calculations done. I discuss those relevant for an improvement in the accuracy of the measurement of Vus in more detail. One major conclusion is that all needed p6 low energy constants can be obtained from experiment via the scalar form-factor in Kl3 decays

Subject headings

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)

Keyword

p6 low energy constants

Vus measurement

next-to-next-to-leading order three-flavour calculations

chiral perturbation theory

two loops

chiral dynamics

meson sector

scalar form factor

kaon decay into pion+lepton+neutrino

overview

Publication and Content Type

kon (subject category)

ref (subject category)