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    K*(892) resonance suppression in Ar+Sc collisions at energies available at the CERN Super Proton Synchrotron

    Amine Chabane1,2, Tom Reichert1,2,3, Jan Steinheimer3,4, and Marcus Bleicher1,2

    Phys. Rev. C 113, 055202 – Published 1 May, 2026

    DOI: https://doi.org/10.1103/6d1c-q3kc

    Abstract

    We investigate the production and suppression of short-lived K*(892) resonances in p+p and Ar+Sc collisions at CERN-SPS energies (sNN=8.8, 11.9, and 16.8 GeV) using the Ultrarelativistic Quantum Molecular dynamics (UrQMD) model. We present multiplicities, rapidity, and transverse momentum distributions, and analyze the K*/K yield ratios as a function of energy and centrality. We further estimate the time interval between chemical and kinetic freezeout using the experimental method. A detailed comparison with recent NA61/SHINE data demonstrates that the UrQMD model captures the essential features of resonance dynamics, although the very strong resonance suppression in central collisions observed in the data cannot be quantitatively reproduced.

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