Beam energy dependence of identified particle production in heavy-ion collisions using a parton-hadron string dynamics model
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866911574010101760 |
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| author | Bhat, Towseef Bairathi, Vipul Kumar, Lokesh Kabana, Sonia |
| author_facet | Bhat, Towseef Bairathi, Vipul Kumar, Lokesh Kabana, Sonia |
| contents | We report predictions for the transverse momentum ($p_T$) spectra of $π^{\pm}$, $K^{\pm}$, $p$, and $\bar{p}$ in various collision centrality from Au + Au collisions at beam energies ($E_{lab}$) of 6.7, 8, 11, and 25 A~GeV using a parton-hadron string dynamics (PHSD) transport model. We studied the dependence of particle yields ($dN/dy$), mean transverse momenta ($\langle p_T \rangle$), and particle ratios on collision energy and centrality to understand the underlying mechanisms of particle production. A comparison of the PHSD model results with available experimental measurements provides a qualitative description of these observables. Our results highlight the importance of baryon stopping, strangeness production, pair production, and baryon-antibaryon annihilation in the high baryon density region. These findings also provide theoretical insights relevant to the ongoing beam energy scan program at RHIC and the future heavy-ion programs at FAIR and NICA. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_06080 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Beam energy dependence of identified particle production in heavy-ion collisions using a parton-hadron string dynamics model Bhat, Towseef Bairathi, Vipul Kumar, Lokesh Kabana, Sonia Nuclear Theory High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Experiment We report predictions for the transverse momentum ($p_T$) spectra of $π^{\pm}$, $K^{\pm}$, $p$, and $\bar{p}$ in various collision centrality from Au + Au collisions at beam energies ($E_{lab}$) of 6.7, 8, 11, and 25 A~GeV using a parton-hadron string dynamics (PHSD) transport model. We studied the dependence of particle yields ($dN/dy$), mean transverse momenta ($\langle p_T \rangle$), and particle ratios on collision energy and centrality to understand the underlying mechanisms of particle production. A comparison of the PHSD model results with available experimental measurements provides a qualitative description of these observables. Our results highlight the importance of baryon stopping, strangeness production, pair production, and baryon-antibaryon annihilation in the high baryon density region. These findings also provide theoretical insights relevant to the ongoing beam energy scan program at RHIC and the future heavy-ion programs at FAIR and NICA. |
| title | Beam energy dependence of identified particle production in heavy-ion collisions using a parton-hadron string dynamics model |
| topic | Nuclear Theory High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Experiment |
| url | https://arxiv.org/abs/2604.06080 |