How far can we see back in time in high-energy collisions using charm hadrons?
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866912031371689984 |
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| author | Gyulai, Laszlo Biro, Gabor Vertesi, Robert Barnafoldi, Gergely Gabor |
| author_facet | Gyulai, Laszlo Biro, Gabor Vertesi, Robert Barnafoldi, Gergely Gabor |
| contents | We use open charm production to estimate how far we can see back in time in high-energy hadron-hadron collisions. We analyze the transverse momentum distributions of the identified D mesons from pp, p--Pb and A--A collisions at the ALICE and STAR experiments covering the energy range from $\sqrt{s_{\rm NN}} = 200$~GeV up to 7~TeV. Within a non-extensive statistical framework, the common Tsallis parameters for D mesons represent higher temperature and more degrees of freedom than that of light-flavour hadrons. Assuming Bjorken-expansion, the production of D mesons corresponds to a significantly earlier proper time, $τ_{\rm D} = (0.18 \pm 0.06) τ_{\rm LF}$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_14282 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | How far can we see back in time in high-energy collisions using charm hadrons? Gyulai, Laszlo Biro, Gabor Vertesi, Robert Barnafoldi, Gergely Gabor High Energy Physics - Phenomenology Nuclear Theory We use open charm production to estimate how far we can see back in time in high-energy hadron-hadron collisions. We analyze the transverse momentum distributions of the identified D mesons from pp, p--Pb and A--A collisions at the ALICE and STAR experiments covering the energy range from $\sqrt{s_{\rm NN}} = 200$~GeV up to 7~TeV. Within a non-extensive statistical framework, the common Tsallis parameters for D mesons represent higher temperature and more degrees of freedom than that of light-flavour hadrons. Assuming Bjorken-expansion, the production of D mesons corresponds to a significantly earlier proper time, $τ_{\rm D} = (0.18 \pm 0.06) τ_{\rm LF}$. |
| title | How far can we see back in time in high-energy collisions using charm hadrons? |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2401.14282 |