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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2509.23780 |
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| _version_ | 1866918149898633216 |
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| author | Yang, Zhong Wang, Xin-Nian |
| author_facet | Yang, Zhong Wang, Xin-Nian |
| contents | In this Research Perspective, we briefly review the diffusion wake, a distinctive consequence of the Mach-cone wake induced by the supersonic jets in ultra-relativistic heavy-ion collisions. The diffusion wake depletes soft hadrons in the direction opposite to the propagating jet. According to coupled transport and hydrodynamic simulations, a valley in the 2-dimensional jet-hadron correlation in azimuthal angle and rapidity arises on the top of the multiple parton interaction ridge as an unambiguous signal of the diffusion wake induced by $γ$-jets in heavy-ion collisions. In dijet events with a finite rapidity gap, the rapidity asymmetry of the jet-hadron correlation has been shown to be a robust signal of the diffusion wake. The same rapidity asymmetry can also be applied to $γ$-jet events and both are background free. Experimental measurements of these signals can provide valuable insights into the properties of the quark-gluon plasma (QGP) formed in high-energy heavy-ion collisions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_23780 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Diffusion wake: a distinctive consequence of the Mach-cone wake induced by supersonic jets in high-energy heavy-ion collisions Yang, Zhong Wang, Xin-Nian High Energy Physics - Phenomenology In this Research Perspective, we briefly review the diffusion wake, a distinctive consequence of the Mach-cone wake induced by the supersonic jets in ultra-relativistic heavy-ion collisions. The diffusion wake depletes soft hadrons in the direction opposite to the propagating jet. According to coupled transport and hydrodynamic simulations, a valley in the 2-dimensional jet-hadron correlation in azimuthal angle and rapidity arises on the top of the multiple parton interaction ridge as an unambiguous signal of the diffusion wake induced by $γ$-jets in heavy-ion collisions. In dijet events with a finite rapidity gap, the rapidity asymmetry of the jet-hadron correlation has been shown to be a robust signal of the diffusion wake. The same rapidity asymmetry can also be applied to $γ$-jet events and both are background free. Experimental measurements of these signals can provide valuable insights into the properties of the quark-gluon plasma (QGP) formed in high-energy heavy-ion collisions. |
| title | Diffusion wake: a distinctive consequence of the Mach-cone wake induced by supersonic jets in high-energy heavy-ion collisions |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2509.23780 |