Implications of the LHCb Evidence for Charm CP Violation
High Energy Physics - Phenomenology
2012-03-23 v2 High Energy Physics - Experiment
Abstract
The LHCb collaboration recently announced preliminary evidence for CP violation in D meson decays. We discuss this result in the context of the standard model (SM), as well as its extensions. In the absence of reliable methods to evaluate the hadronic matrix elements involved, we can only estimate qualitatively the magnitude of the non-SM tree level operators required to generate the observed central value. In the context of an effective theory, we list the operators that can give rise to the measured CP violation and investigate constraints on them from other processes.
Cite
@article{arxiv.1111.4987,
title = {Implications of the LHCb Evidence for Charm CP Violation},
author = {Gino Isidori and Jernej F. Kamenik and Zoltan Ligeti and Gilad Perez},
journal= {arXiv preprint arXiv:1111.4987},
year = {2012}
}
Comments
7 pages, 3 figures; minor corrections, conclusions unchanged