MIXING IN THE D0 SYSTEM RESULTS FROM COLLIDER EXPERIMENTS

10 January 2003

journal article
Published by World Scientific Pub Co Pte Ltd in Modern Physics Letters A

Vol. 18 (1) , 1-22
https://doi.org/10.1142/s0217732303009514

Abstract

Mixing in the D⁰ system may provide a sensitive probe for new physics beyond the Standard Model (SM) but has so far eluded experimental observation. The SM predictions are typically small (< 10^-3) for the mixing parameters x, y which, in the absence of charge-parity (CP) symmetry violation, measure the mass (x = Δ m/Γ) and lifetime (y = ΔΓ/2Γ) difference of the CP eigenstates in the D⁰ system. The asymmetric B-factory experiments BABAR and Belle open up the opportunity of measuring x, y with unprecedented statistical precision and sample purities. Results from BABAR and Belle, and from CLEO are reviewed.

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