Radiative Corrections to $π_{l2}$ and $K_{l2}$ Decays

Details Radiative Corrections to $π_{l2}$ and $K_{l2}$ Decays Radiative Corrections to $π_{l2}$ and $K_{l2}$ Decays

1995-01-12

arxiv.org/abs/hep-ph/9501286v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, Latex, uses epsfig. Revised version: Major changes in the presentaion, but no changes in the results. To appear in Ph

Scientific paper

We reexamine radiative corrections to $\pi_{l2}$ and $K_{l2}$ decays. We perform a matching calculation, including vector and axial vector resonances as explicit degrees of freedom in the long distance part. By considering the dependence on the matching scale and on the hadronic parameters, and by comparing with model independent estimates, we scrutinize the model dependence of the results. For the pseudoscalar meson decay constants, we extract the values f_pi = (92.1 \pm 0.3) MeV and f_K = (112.4 \pm 0.9) MeV. For the ratios R_pi and R_K of the electronic and muonic decay modes, we predict R_pi = (1.2354 \pm 0.0002) 10^{-4} and R_K = (2.472 \pm 0.001) 10^{-5}.

Affiliated with

Also associated with

No associations

Rating

Radiative Corrections to $π_{l2}$ and $K_{l2}$ 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 Radiative Corrections to $π_{l2}$ and $K_{l2}$ Decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiative Corrections to $π_{l2}$ and $K_{l2}$ Decays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-231020