Rescattering effects on spin-interference for $ρ^{0}$ photoproduction in heavy-ion collisions
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866908553398190080 |
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| author | Wang, Yusong Li, Xinbai Li, Ziyang Tang, Zebo Wu, Xin Zha, Wangmei |
| author_facet | Wang, Yusong Li, Xinbai Li, Ziyang Tang, Zebo Wu, Xin Zha, Wangmei |
| contents | Recent measurements by various experiments in ultra-peripheral collisions have observed spin-interference in $ρ^{0}$ photoproduction, marking a breakthrough in Fermi-scale quantum interference experiments. Building on this, STAR extended the measurement to hadronic heavy-ion collisions, where significant rescattering effects on $ρ^{0}$ mesons were expected. In this study, we investigate how these rescattering effects influence the measurement of spin-interference. By embedding $ρ^{0}$ mesons produced via photoproduction, modeled by the Vector Meson Dominance model, into the Ultrarelativistic Quantum Molecular Dynamics framework, we estimate the impact on the $\cos2ϕ$ and $\cos4ϕ$ modulations, where $ϕ$ is the angle between $ρ^{0}$ and one of the daughters' ($π^{\pm}$) transverse momentum. The results indicate a significant suppression of the $\cos2ϕ$ modulation, while the $\cos4ϕ$ modulation remains largely unaffected, which provides insight for understanding the difference due to rescattering effects between experimental measurements and theoretical predictions for $ρ^{0}$ photoproduction in heavy-ion collisions. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2502_19065 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Rescattering effects on spin-interference for $ρ^{0}$ photoproduction in heavy-ion collisions Wang, Yusong Li, Xinbai Li, Ziyang Tang, Zebo Wu, Xin Zha, Wangmei Nuclear Theory High Energy Physics - Experiment Nuclear Experiment Recent measurements by various experiments in ultra-peripheral collisions have observed spin-interference in $ρ^{0}$ photoproduction, marking a breakthrough in Fermi-scale quantum interference experiments. Building on this, STAR extended the measurement to hadronic heavy-ion collisions, where significant rescattering effects on $ρ^{0}$ mesons were expected. In this study, we investigate how these rescattering effects influence the measurement of spin-interference. By embedding $ρ^{0}$ mesons produced via photoproduction, modeled by the Vector Meson Dominance model, into the Ultrarelativistic Quantum Molecular Dynamics framework, we estimate the impact on the $\cos2ϕ$ and $\cos4ϕ$ modulations, where $ϕ$ is the angle between $ρ^{0}$ and one of the daughters' ($π^{\pm}$) transverse momentum. The results indicate a significant suppression of the $\cos2ϕ$ modulation, while the $\cos4ϕ$ modulation remains largely unaffected, which provides insight for understanding the difference due to rescattering effects between experimental measurements and theoretical predictions for $ρ^{0}$ photoproduction in heavy-ion collisions. |
| title | Rescattering effects on spin-interference for $ρ^{0}$ photoproduction in heavy-ion collisions |
| topic | Nuclear Theory High Energy Physics - Experiment Nuclear Experiment |
| url | https://arxiv.org/abs/2502.19065 |