Determination of the Strong Phase in D0 → K+π- Using Quantum-Correlated Measurements

Details Determination of the Strong Phase in D0 → K+π- Using Quantum-Correlated Measurements Determination of the Strong Phase in D0 → K+π- Using Quantum-Correlated Measurements

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009fuin.conf..298l&link_type=abstract

FUNDAMENTAL INTERACTIONS . Proceedings of the 23rd Lake Louise Winter Institute 2008 . Held 18 - 23 February 2008 in Lake Louise

Physics

Scientific paper

The decays of D0 and bar D0 mesons produced from e+e- annihilations at the ψ(3770) resonance reflect quantum correlations so that decay rates are sensitive to interference between indistinguishable final states. Using the CLEO-c detector at the Cornell Electron Storage Ring, we measure the time-independent decay rates of D0 decays to K-π+, K+π-, several CP eigenstates, and semileptonic states. We make use of both partially- and fully-reconstructed D0 - bar D0 pairs. A χ2 minimization fitter extracts from these decay rates the uncorrelated branching fractions, τKπ, y, and the strong phase cosδKπ. By constraining the branching fractions and γKπ with independent measurements, a first measurement of cosδKπ can be made.

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