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Search for D0-D¯0 mixing using doubly flavor tagged semileptonic decay modes

Aubert, B. et al. (2007) Search for D0-D¯0 mixing using doubly flavor tagged semileptonic decay modes. Physical Review D, 76 (1). 014018. ISSN 1550-7998

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Abstract

We have searched for D0-D̅ 0 mixing in D*+→π+D0 decays with D0→K(*)eν in a sample of e+e-→cc̅ events produced near 10.58 GeV. The charge of the slow pion from charged D* decay tags the charm flavor at production, and it is required to be consistent with the flavor of a fully reconstructed second charm decay in the same event. We observe 3 mixed candidates compared to 2.85 background events expected from simulation. We ascribe a 50% systematic uncertainty to this expected background rate. We find a central value for the mixing rate of 0.4×10-4. Using a frequentist method, we set corresponding 68% and 90% confidence intervals at (-5.6,7.4)×10-4 and (-13,12)×10-4, respectively.

Item Type: Article
Subjects: Q Science > QC Physics
Schools: School of Applied Sciences
Depositing User: Sharon Beastall
Date Deposited: 10 Jun 2011 11:36
Last Modified: 10 Jun 2011 11:36
URI: http://eprints.hud.ac.uk/id/eprint/10757

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