B0 - anti-B0 mixing beyond factorization
High Energy Physics - Phenomenology
2014-11-17 v1
Abstract
We present a calculation of the B0 - anti-B0 mixing matrix element in the framework of QCD sum rules for three-point functions. We compute alpha_s corrections to a three-point function at the three-loop level in QCD perturbation theory, which allows one to extract the matrix element with next-to-leading order (NLO) accuracy. This calculation is imperative for a consistent evaluation of experimentally-measured mixing parameters since the coefficient functions of the effective Hamiltonian for B0 - anti-B0 mixing are known at NLO. We find that radiative corrections violate factorization at NLO; this violation is under full control and amounts to 10%.
Cite
@article{arxiv.hep-ph/0306032,
title = {B0 - anti-B0 mixing beyond factorization},
author = {J. G. Korner and A. I. Onishchenko and A. A. Petrov and A. A. Pivovarov},
journal= {arXiv preprint arXiv:hep-ph/0306032},
year = {2014}
}
Comments
4 pages, 3 figures, LaTeX2e