Master formula for $\varepsilon'/\varepsilon$ beyond the Standard Model
High Energy Physics - Phenomenology
2019-08-09 v3 High Energy Physics - Experiment
High Energy Physics - Lattice
Abstract
We present for the first time a master formula for , the ratio probing direct CP violation in decays, valid in any theory beyond the Standard Model (BSM). The formula makes use of hadronic matrix elements of BSM operators calculated recently in the Dual QCD approach and the ones of the SM operators from lattice QCD. We emphasize the large impact of several scalar and tensor BSM operators in the context of the emerging anomaly. We have implemented the results in the open source code flavio.
Keywords
Cite
@article{arxiv.1807.02520,
title = {Master formula for $\varepsilon'/\varepsilon$ beyond the Standard Model},
author = {Jason Aebischer and Christoph Bobeth and Andrzej J. Buras and Jean-Marc Gérard and David M. Straub},
journal= {arXiv preprint arXiv:1807.02520},
year = {2019}
}
Comments
6 pages, 1 table. v3: signs in table I corrected. arXiv admin note: text overlap with arXiv:1808.00466