Determining the Phase of a Strong Scattering Amplitude from Its Momentum Dependence to Better Than 1°: The Example of Kaon Regeneration

Roy A. Briere and Bruce Winstein
Phys. Rev. Lett. 75, 402 – Published 17 July 1995; Erratum Phys. Rev. Lett. 75, 2070 (1995)
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Abstract

We quantitatively study dispersion relations giving the phase of a strong scattering amplitude from its momentum dependence. We consider C-odd contributions to neutral kaon scattering (regeneration) where accurate measurements of both amplitudes and phases are available. We find, somewhat surprisingly, that, even including many possibly corrupting effects, the uncertainty is well below 1°. This allows an accurate determination of the phase φ+ in kaon decay to test CPT; conversely, assuming CPT symmetry, new phenomena can be limited.

  • Received 16 December 1994

DOI:https://doi.org/10.1103/PhysRevLett.75.402

©1995 American Physical Society

Erratum

Authors & Affiliations

Roy A. Briere and Bruce Winstein

  • The Enrico Fermi Institute, The University of Chicago, Chicago, Illinois 60637

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Vol. 75, Iss. 3 — 17 July 1995

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