Characterizing nuclear modification effects in high-energy O-O collisions at energies available at the CERN Large Hadron Collider: A transport model perspective

Abstract

The present work focuses on oxygen-oxygen (O-O) collisions, which are planned at the CERN Large Hadron Collider. Oxygen, being a doubly magic number nucleus, has some very unique features. This study attempts to probe the exotic state of QCD matter in O-O collisions. Additionally, the role of different nuclear density profiles in governing the final-state dynamics in ultrarelativistic nuclear collisions is also explored. Using a multiphase transport model, we obtain the nuclear modification factor <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mo>(</a:mo><a:msub><a:mi>R</a:mi><a:mtext>AA</a:mtext></a:msub><a:mo>)</a:mo></a:math> for all charged hadrons and identified particles for O-O collisions at <b:math xmlns:b="http://www.w3.org/1998/Math/MathML"><b:msqrt><b:msub><b:mi>s</b:mi><b:mi>NN</b:mi></b:msub></b:msqrt></b:math> = 7 TeV. Furthermore, we investigate the behavior of <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"><c:msub><c:mi>R</c:mi><c:mtext>AA</c:mtext></c:msub></c:math> as a function of transverse momentum <d:math xmlns:d="http://www.w3.org/1998/Math/MathML"><d:mo>(</d:mo><d:msub><d:mi mathvariant="italic">p</d:mi><d:mi mathvariant="normal">T</d:mi></d:msub><d:mo>)</d:mo></d:math> for three centralities (most central, mid-central, and peripheral) considering both <g:math xmlns:g="http://www.w3.org/1998/Math/MathML"><g:mi>α</g:mi></g:math>-cluster and Woods-Saxon nuclear density profiles. We also extend this work to study the rapidity dependence of <h:math xmlns:h="http://www.w3.org/1998/Math/MathML"><h:msub><h:mi>R</h:mi><h:mtext>AA</h:mtext></h:msub></h:math> for all charged hadrons. To better understand our findings of O-O collisions, the results are confronted with the available data of <i:math xmlns:i="http://www.w3.org/1998/Math/MathML"><i:msub><i:mi>R</i:mi><i:mtext>AA</i:mtext></i:msub></i:math> for Pb-Pb collisions. The present study sheds light on particle production mechanisms, emphasizing factors influencing particle yield from precollision to postcollision stages in the context of O-O collisions. Published by the American Physical Society 2024

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