Two-loop non-leptonic penguin amplitude in QCD factorization
High Energy Physics - Phenomenology
2020-05-20 v1 High Energy Physics - Experiment
Abstract
We complete the calculation of the QCD penguin amplitude at next-to-next-to-leading order in the QCD factorization approach to non-leptonic B-meson decays. This provides the last missing piece in the computation of the QCD correction to direct CP asymmetries at leading power in the heavy-quark expansion.
Cite
@article{arxiv.2002.03262,
title = {Two-loop non-leptonic penguin amplitude in QCD factorization},
author = {Guido Bell and Martin Beneke and Tobias Huber and Xin-Qiang Li},
journal= {arXiv preprint arXiv:2002.03262},
year = {2020}
}
Comments
45 pages, 9 figures, 6 tables. Expressions for the 2-loop hard-scattering kernels before and after the convolution with the light-meson LCDA are attached in electronic form to the source of the present submission