The < S P P > Green function and SU(3) breaking in K_{l3} decays

Details The < S P P > Green function and SU(3) breaking in K_{l3} decays The < S P P > Green function and SU(3) breaking in K_{l3} decays

2005-03-11

arxiv.org/abs/hep-ph/0503108v3

JHEP 0504:006,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, published version: results and conclusions unchanged

Scientific paper

10.1088/1126-6708/2005/04/006

Using the 1/N_C expansion scheme and truncating the hadronic spectrum to the lowest-lying resonances, we match a meromorphic approximation to the < S P P > Green function onto QCD by imposing the correct large-momentum falloff, both off-shell and on the relevant hadron mass shells. In this way we determine a number of chiral low-energy constants of O(p^6), in particular the ones governing SU(3) breaking in the K_{l3} vector form factor at zero momentum transfer. The main result of our matching procedure is that the known loop contributions largely dominate the corrections of O(p^6) to f_{+}(0). We discuss the implications of our final value f_{+}^{K^0 \pi^-}(0)=0.984 \pm 0.012 for the extraction of V_{us} from K_{l3} decays.

Affiliated with

Also associated with

No associations

Rating

The < S P P > Green function and SU(3) breaking in K_{l3} decays does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The < S P P > Green function and SU(3) breaking in K_{l3} decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The < S P P > Green function and SU(3) breaking in K_{l3} decays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-345366