Measurement of ${}_Λ^{3}\mathrm{H}$ production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866913648718381056 |
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| author | ALICE Collaboration |
| author_facet | ALICE Collaboration |
| contents | The first measurement of $_Λ^{3}\mathrm{H}$ and $^3_ {\overlineΛ}\overline{\mathrm{H}}$ differential production with respect to transverse momentum and centrality in Pb$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$~TeV is presented. The $_Λ^{3}\mathrm{H}$ has been reconstructed via its two-charged-body decay channel, i.e., $_Λ^{3}\mathrm{H} \rightarrow {}^{3}\mathrm{He} + π^{-}$. A Blast-Wave model fit of the $p_{\rm T}$-differential spectra of all nuclear species measured by the ALICE collaboration suggests that the $_Λ^{3}\mathrm{H}$ kinetic freeze-out surface is consistent with that of other nuclei. The ratio between the integrated yields of $_Λ^{3}\mathrm{H}$ and $^3\mathrm{He}$ is compared to predictions from the statistical hadronisation model and the coalescence model, with the latter being favoured by the presented measurements. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_19839 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Measurement of ${}_Λ^{3}\mathrm{H}$ production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV ALICE Collaboration Nuclear Experiment High Energy Physics - Experiment The first measurement of $_Λ^{3}\mathrm{H}$ and $^3_ {\overlineΛ}\overline{\mathrm{H}}$ differential production with respect to transverse momentum and centrality in Pb$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$~TeV is presented. The $_Λ^{3}\mathrm{H}$ has been reconstructed via its two-charged-body decay channel, i.e., $_Λ^{3}\mathrm{H} \rightarrow {}^{3}\mathrm{He} + π^{-}$. A Blast-Wave model fit of the $p_{\rm T}$-differential spectra of all nuclear species measured by the ALICE collaboration suggests that the $_Λ^{3}\mathrm{H}$ kinetic freeze-out surface is consistent with that of other nuclei. The ratio between the integrated yields of $_Λ^{3}\mathrm{H}$ and $^3\mathrm{He}$ is compared to predictions from the statistical hadronisation model and the coalescence model, with the latter being favoured by the presented measurements. |
| title | Measurement of ${}_Λ^{3}\mathrm{H}$ production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV |
| topic | Nuclear Experiment High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2405.19839 |