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Related Experiment Video

Updated: Aug 16, 2025

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
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Addendum: A dispersive analysis of and .

Simon Holz1, Christoph Hanhart2, Martin Hoferichter1

  • 1Albert Einstein Center for Fundamental Physics, Institute for Theoretical Physics, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland.

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|December 26, 2022
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Summary

This study resolves a mismatch in the Cabibbo-Kobayashi-Maskawa (CKM) mixing parameter by incorporating higher-order terms in the expansion of the B meson decay. Updated numerical results are provided for this extended theoretical framework.

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Area of Science:

  • Particle Physics
  • High Energy Physics

Background:

  • A discrepancy exists between the CKM matrix elements derived from B meson decays and other measurements.
  • Previous theoretical models may not fully capture the complexities of B meson decay dynamics.

Purpose of the Study:

  • To resolve the observed mismatch in the CKM mixing parameter .
  • To refine the theoretical description of B meson decays by including higher-order corrections.

Main Methods:

  • The analysis extends the theoretical framework for B meson decay by incorporating higher orders in the expansion.
  • The study re-evaluates previous analyses within this enhanced theoretical model.

Main Results:

  • The inclusion of higher-order terms successfully resolves the mismatch in the parameter.
  • Updated numerical values for the CKM matrix elements have been calculated.

Conclusions:

  • Higher-order contributions are crucial for an accurate description of B meson decays.
  • The refined theoretical framework provides a more consistent picture of fundamental particle interactions.