Puzzles in Cabibbo-Suppressed Charm Decays
High Energy Physics - Phenomenology
2010-04-05 v2
Abstract
We identify two Cabibbo suppressed decay modes with anomalously high branching ratios which are not simply explained by any model. All standard model diagrams that can contribute to these decays are related by symmetries to diagrams for other decays that do not show any such enhancement. If these high branching ratios are confirmed by more precise experiments, they may require new physics to explain them. Anomalies in decays and tests for possible violation of G-parity are discussed.
Cite
@article{arxiv.hep-ph/0208217,
title = {Puzzles in Cabibbo-Suppressed Charm Decays},
author = {F. E. Close and H. J. Lipkin},
journal= {arXiv preprint arXiv:hep-ph/0208217},
year = {2010}
}
Comments
12 pages, additional clarification at eq. (13), correction of error in eq. (18) and subsequent discussion