Implications of the LHCb Evidence for Charm CP Violation

Details Implications of the LHCb Evidence for Charm CP Violation Implications of the LHCb Evidence for Charm CP Violation

2011-11-21

arxiv.org/abs/1111.4987v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 3 figures; minor corrections, conclusions unchanged

Scientific paper

10.1016/j.physletb.2012.03.046

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.

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