Volume 483 -
The XVIth Quark Confinement and the Hadron Spectrum Conference
(QCHSC24) -
Session B: Light Quarks
Measurement of $\Xi^-$ Polarization in the $K^- p → \Xi^- K^+$ + Reaction at 1.8 GeV/c
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Published on:
October 27, 2025
Abstract
The polarization of a $\Xi^-$ baryon produced in the p$(K^-,K^+)\Xi^-$ reaction offers critical insights into the double-strangeness exchange mechanism. Since polarization reflects the spin-flip amplitude of the reaction, it helps us describe the reaction mechanism involving high-spin resonances, which are expected to dominate in the forward region. We have measured the cross-section for the $K^-p\to K^+\Xi^-$ reaction and $\Xi^-$ polarization in the forward angular region at 1.8 GeV/c. We present preliminary results from J-PARC E42.
DOI: https://doi.org/10.22323/1.483.0079
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.