K0-anti-K0 mixing in the 1/Nc expansion
High Energy Physics - Phenomenology
2008-11-26 v3
Abstract
We present the result for the invariant B_K factor of K0-anti-K0 mixing in the chiral limit and to next-to-leading order in the 1/Nc expansion. We explicitly demonstrate the cancellation of the renormalization scale and scheme dependences between short- and long-distance contributions in the final expression. Numerical estimates are then given, by taking into account increasingly refined short- and long-distance constraints of the underlying QCD Green's function which governs the B_K factor.
Cite
@article{arxiv.hep-ph/0006146,
title = {K0-anti-K0 mixing in the 1/Nc expansion},
author = {Santiago Peris and Eduardo de Rafael},
journal= {arXiv preprint arXiv:hep-ph/0006146},
year = {2008}
}
Comments
10 pages, LateX, 2 figures. New hadronic function with triple poles. Improved interpolation between short and long distances. Discussion changed accordingly. Slight changes in final numerical result