Updated Search for the Flavor-Changing Neutral-Current Decay D^0 \to {\mu} + {\mu}-
High Energy Physics - Experiment
2010-12-13 v1
Abstract
We report on a search for the flavor-changing neutral-current decay D0 \to {\mu}+ {\mu}- in pp collisions at \surd s = 1.96 TeV using 360 pb-1 of integrated luminosity collected by the CDF II detector at the Fermilab Tevatron collider. A displaced vertex trigger selects long-lived D0 candidates in the {\mu}+ {\mu}-, {\pi}+{\pi}-, and K-{\pi}+ decay modes. We use the Cabibbo-favored D0 \to K-{\pi}+ channel to optimize the selection criteria in an unbiased manner, and the kinematically similar D0 \to{\pi}+ {\pi}- channel for normalization. We set an upper limit on the branching fraction (D0 --> {\mu}+ {\mu}-) < 2.1 E-7 (3.0 E-7) at the 90% (95%) confidence level.
Keywords
Cite
@article{arxiv.1008.5077,
title = {Updated Search for the Flavor-Changing Neutral-Current Decay D^0 \to {\mu} + {\mu}-},
author = {The CDF Collaboration and T. Aaltonen},
journal= {arXiv preprint arXiv:1008.5077},
year = {2010}
}
Comments
8 pages, 5 figures, RevTex format, submitted to PRD