Anisotropic flow in fixed-target $^{208}$Pb+$^{20}$Ne collisions as a probe of quark-gluon plasma
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| Autores principales: | , , , , , , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| author | Giacalone, Giuliano Zhao, Wenbin Bally, Benjamin Shen, Shihang Duguet, Thomas Ebran, Jean-Paul Elhatisari, Serdar Frosini, Mikael Lähde, Timo A. Lee, Dean Lu, Bing-Nan Ma, Yuan-Zhuo Meißner, Ulf-G. Nijs, Govert Noronha-Hostler, Jacquelyn Plumberg, Christopher Rodríguez, Tomás R. Roth, Robert van der Schee, Wilke Schenke, Björn Shen, Chun Somà, Vittorio |
| author_facet | Giacalone, Giuliano Zhao, Wenbin Bally, Benjamin Shen, Shihang Duguet, Thomas Ebran, Jean-Paul Elhatisari, Serdar Frosini, Mikael Lähde, Timo A. Lee, Dean Lu, Bing-Nan Ma, Yuan-Zhuo Meißner, Ulf-G. Nijs, Govert Noronha-Hostler, Jacquelyn Plumberg, Christopher Rodríguez, Tomás R. Roth, Robert van der Schee, Wilke Schenke, Björn Shen, Chun Somà, Vittorio |
| contents | The System for Measuring Overlap with Gas (SMOG2) at the LHCb detector enables the study of fixed-target ion-ion collisions at relativistic energies ($\sqrt{s_{\rm NN}}\sim100$ GeV in the centre-of-mass). With input from \textit{ab initio} calculations of the structure of $^{16}$O and $^{20}$Ne, we compute 3+1D hydrodynamic predictions for the anisotropic flow of Pb+Ne and Pb+O collisions, to be tested with upcoming LHCb data. This will allow the detailed study of quark-gluon plasma (QGP) formation as well as experimental tests of the predicted nuclear shapes. Elliptic flow ($v_2$) in Pb+Ne collisions is greatly enhanced compared to the Pb+O baseline due to the shape of $^{20}$Ne, which is deformed in a bowling-pin geometry. Owing to the large $^{208}$Pb radius, this effect is seen in a broad centrality range, a unique feature of this collision configuration. Larger elliptic flow further enhances the quadrangular flow ($v_4$) of Pb+Ne collisions via non-linear coupling, and impacts the sign of the kurtosis of the elliptic flow vector distribution ($c_2\{4\}$). Exploiting the shape of $^{20}$Ne proves thus an ideal method to investigate the formation of QGP in fixed-target experiments at LHCb, and demonstrates the power of SMOG2 as a tool to image nuclear ground states. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_20210 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Anisotropic flow in fixed-target $^{208}$Pb+$^{20}$Ne collisions as a probe of quark-gluon plasma Giacalone, Giuliano Zhao, Wenbin Bally, Benjamin Shen, Shihang Duguet, Thomas Ebran, Jean-Paul Elhatisari, Serdar Frosini, Mikael Lähde, Timo A. Lee, Dean Lu, Bing-Nan Ma, Yuan-Zhuo Meißner, Ulf-G. Nijs, Govert Noronha-Hostler, Jacquelyn Plumberg, Christopher Rodríguez, Tomás R. Roth, Robert van der Schee, Wilke Schenke, Björn Shen, Chun Somà, Vittorio Nuclear Theory High Energy Physics - Phenomenology Nuclear Experiment The System for Measuring Overlap with Gas (SMOG2) at the LHCb detector enables the study of fixed-target ion-ion collisions at relativistic energies ($\sqrt{s_{\rm NN}}\sim100$ GeV in the centre-of-mass). With input from \textit{ab initio} calculations of the structure of $^{16}$O and $^{20}$Ne, we compute 3+1D hydrodynamic predictions for the anisotropic flow of Pb+Ne and Pb+O collisions, to be tested with upcoming LHCb data. This will allow the detailed study of quark-gluon plasma (QGP) formation as well as experimental tests of the predicted nuclear shapes. Elliptic flow ($v_2$) in Pb+Ne collisions is greatly enhanced compared to the Pb+O baseline due to the shape of $^{20}$Ne, which is deformed in a bowling-pin geometry. Owing to the large $^{208}$Pb radius, this effect is seen in a broad centrality range, a unique feature of this collision configuration. Larger elliptic flow further enhances the quadrangular flow ($v_4$) of Pb+Ne collisions via non-linear coupling, and impacts the sign of the kurtosis of the elliptic flow vector distribution ($c_2\{4\}$). Exploiting the shape of $^{20}$Ne proves thus an ideal method to investigate the formation of QGP in fixed-target experiments at LHCb, and demonstrates the power of SMOG2 as a tool to image nuclear ground states. |
| title | Anisotropic flow in fixed-target $^{208}$Pb+$^{20}$Ne collisions as a probe of quark-gluon plasma |
| topic | Nuclear Theory High Energy Physics - Phenomenology Nuclear Experiment |
| url | https://arxiv.org/abs/2405.20210 |