Accumulating evidence for nonstandard leptonic decays of D_s mesons
High Energy Physics - Phenomenology
2008-11-26 v2 High Energy Physics - Experiment
High Energy Physics - Lattice
Abstract
The measured rate for D_s -> l nu decays, where l is a muon or tau, is larger than the standard model prediction, which relies on lattice QCD, at the 3.8 sigma level. We discuss how robust the theoretical prediction is, and we show that the discrepancy with experiment may be explained by a charged Higgs boson or a leptoquark.
Keywords
Cite
@article{arxiv.0803.0512,
title = {Accumulating evidence for nonstandard leptonic decays of D_s mesons},
author = {Bogdan A. Dobrescu and Andreas S. Kronfeld},
journal= {arXiv preprint arXiv:0803.0512},
year = {2008}
}
Comments
4 pages; v2 conforms with PRL version