Light nuclei photoproduction in relativistic heavy ion ultraperipheral collisions
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866909246679941120 |
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| author | Hu, Jin-Yu Lin, Shuo Pu, Shi Wang, Qun |
| author_facet | Hu, Jin-Yu Lin, Shuo Pu, Shi Wang, Qun |
| contents | We have investigated light nuclei pair photoproduction in relativistic heavy ion ultraperipheral collisions. As a first attempt, we employ our previously developed quantum electrodynamics model, which incorporates a wave-packet description of initial nuclei, to compute the cross section for proton-antiproton pair photoproduction. The effective vertex for the photon and proton interaction is chosen based on studies of two-photon exchange effects in hadron physics. We present the transverse momentum, invariant mass, and azimuthal angle distributions of proton-antiproton pairs at $\sqrt{s_{NN}}=200$ GeV in Au+Au ultraperipheral collisions. We observe a $\cos(2ϕ)$ modulation and an almost negligible $\cos(4ϕ)$ modulation in the azimuthal angle distribution. Our studies helps us better understand the matter generated by light. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_06091 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Light nuclei photoproduction in relativistic heavy ion ultraperipheral collisions Hu, Jin-Yu Lin, Shuo Pu, Shi Wang, Qun High Energy Physics - Phenomenology Nuclear Theory We have investigated light nuclei pair photoproduction in relativistic heavy ion ultraperipheral collisions. As a first attempt, we employ our previously developed quantum electrodynamics model, which incorporates a wave-packet description of initial nuclei, to compute the cross section for proton-antiproton pair photoproduction. The effective vertex for the photon and proton interaction is chosen based on studies of two-photon exchange effects in hadron physics. We present the transverse momentum, invariant mass, and azimuthal angle distributions of proton-antiproton pairs at $\sqrt{s_{NN}}=200$ GeV in Au+Au ultraperipheral collisions. We observe a $\cos(2ϕ)$ modulation and an almost negligible $\cos(4ϕ)$ modulation in the azimuthal angle distribution. Our studies helps us better understand the matter generated by light. |
| title | Light nuclei photoproduction in relativistic heavy ion ultraperipheral collisions |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2407.06091 |