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Limits on Flavor Changing Neutral Currents in D^0 Meson Decays

Freyberger, A. and Barish, B. and Chadha, M. and Chan, S. and Eigen, G. and Miller, J. S. and O'Grady, C. and Schmidtler, M. and Urheim, J. and Würthwein, F. and Weinstein, Alan J. (1996) Limits on Flavor Changing Neutral Currents in D^0 Meson Decays. Physical Review Letters, 76 (17). pp. 3065-3069. ISSN 0031-9007. doi:10.1103/PhysRevLett.76.3065.

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Using the CLEO II detector at the Cornell Electron Storage Ring, we have searched for flavor changing neutral currents and lepton family number violations in D^0 meson decays. The upper limits on the branching fractions for D^0→ℓ^+ℓ^- and D^0→X^0ℓ^+ℓ^- are in the range 10^(-5) to 10^(-4), where X^0 can be a π^0, K_s^0, η, ρ^0, ω, K̅^(*0), or φ meson, and the ℓ^+ℓ^- pair can be e^+e^-, μ^+μ^-, or e^±μ^∓. Although these limits are above the theoretical predictions, most are new or an order of magnitude lower than previous limits.

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Weinstein, Alan J.0000-0002-0928-6784
Additional Information:© 1996 The American Physical Society. Received 10 January 1996; published in the issue dated 22 April 1996. We gratefully acknowledge the effort of the CESR staff in providing us with excellent luminosity and running conditions. This work was supported by the National Science Foundation, the U.S. Department of Energy, the Heisenberg Foundation, the Alexander von Humboldt Stiftung, the Natural Sciences and Engineering Research Council of Canada, and the A. P. Sloan Foundation. One of us (D.F.) would like to thank Gustavo Burdman and Sandip Pakvasa for stimulating discussions.
Funding AgencyGrant Number
Department of Energy (DOE)UNSPECIFIED
Heisenberg FoundationUNSPECIFIED
Alexander von Humboldt StiftungUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
A. P. Sloan FoundationUNSPECIFIED
Issue or Number:17
Classification Code:PACS: 13.20.Fc, 11.30.Hv, 12.60.-i, 14.40.Lb
Record Number:CaltechAUTHORS:20120208-083449377
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Official Citation:Limits on Flavor Changing Neutral Currents in D0 Meson Decays A. Freyberger et al. ((CLEO Collaboration)) pp. 3065-3069
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:29187
Deposited By: Ruth Sustaita
Deposited On:08 Feb 2012 17:09
Last Modified:09 Nov 2021 17:04

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