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  • Open Access

Effect of α clusters on particle production in O-O and p-O collisions at energies available at the CERN Large Hadron Collider

Deependra Sharma*, Arpit Singh†, Md. Samsul Islam‡, Basanta Nandi§, and Sadhana Dash∥

  • *Contact author: deep.phy@outlook.com
  • †Contact author: arpit.ehep@gmail.com
  • ‡Contact author: samsul.phy@gmail.com
  • §Contact author: basanta@phy.iitb.ac.in
  • ∥Contact author: sadhana@phy.iitb.ac.in
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Phys. Rev. C 112, 034905 – Published 12 September, 2025

DOI: https://doi.org/10.1103/l6mj-sgrn

Abstract

In the present work, O-O collisions at sNN=7TeV and p-O collisions at sNN=9.9TeV are studied using the PYTHIA8/Angantyr model for heavy-ion collisions. The theoretically predicted α-cluster structure of oxygen nucleus is implemented in the model to investigate the effect of the initial configuration of the oxygen nucleus on final state observables. The results obtained from the α-cluster structure are compared with those obtained from Woods-Saxon nuclear charge density distribution. The Angantyr model simulation showed that the radial distribution of the oxygen nucleus in α-cluster configuration is more compact in comparison to the Woods-Saxon distribution. The results on charged and identified particle pseudorapidity distribution are obtained in the two initial state configurations of the oxygen nucleus. The results demonstrated that the effect of initial geometrical configuration is more distinct in the noncentral collisions in comparison to the central collisions for both O-O and p-O collisions.

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Outline

Information

Phys. Rev. C 112, 034905– Published 12 September, 2025
  • Received 23 April 2025
  • Revised 3 August 2025
  • Accepted 25 August 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

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