Two-loop current-current operator contribution to the non-leptonic QCD penguin amplitude
High Energy Physics - Phenomenology
2015-09-30 v1 High Energy Physics - Experiment
Abstract
The computation of direct CP asymmetries in charmless B decays at next-to-next-to-leading order (NNLO) in QCD is of interest to ascertain the short-distance contribution. Here we compute the two-loop penguin contractions of the current-current operators Q_{1,2} and provide a first estimate of NNLO CP asymmetries in penguin-dominated b -> s transitions.
Keywords
Cite
@article{arxiv.1507.03700,
title = {Two-loop current-current operator contribution to the non-leptonic QCD penguin amplitude},
author = {Guido Bell and Martin Beneke and Tobias Huber and Xin-Qiang Li},
journal= {arXiv preprint arXiv:1507.03700},
year = {2015}
}
Comments
14 pages, 4 figures, 1 table