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The $D^0 - \bar D^0$ mass difference from a dispersion relation

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arxiv hep-ph/0402204 v1 pith:LSIKP2O3 submitted 2004-02-19 hep-ph

classification hep-ph
keywords deltamassdifferenceheavydispersiongammamesonmodel
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abstract

We study the Standard Model prediction for the mass difference between the two neutral D meson mass eigenstates, $\Delta m$. We derive a dispersion relation based on heavy quark effective theory that relates $\Delta m$ to an integral of the width difference of heavy mesons, $\Delta\Gamma$, over varying values of the heavy meson mass. Modeling the $m_D$-dependence of certain D decay partial widths, we investigate the effects of SU(3) breaking from phase space on the mass difference. We find that $\Delta m$ may be comparable in magnitude to $\Delta\Gamma$ in the Standard Model.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Nonperturbative Dynamics in D-meson Mixing

    hep-ph 2025-08 conditional novelty 6.0 of 10

    First calculation of dimension-11 and dimension-12 QCD condensate contributions to D-meson mixing gives xD = 1.27e-5, still below experiment.

  2. CP violation studies at Super Tau-Charm Facility

    hep-ex 2025-02 conditional novelty 4.0 of 10

    A future Super Tau-Charm Facility is projected to test CP violation in hyperon, tau, and charm decays at 1e-4 to 1e-3 sensitivities and improve the kaon CPT mass-difference limit tenfold.

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