"Table 5" of "Observation of the $\Upsilon$(3S) meson and suppression of $\Upsilon$ states in PbPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV"

メタデータ

公開日
2024-01-01
DOI
  • 10.17182/hepdata.130959.v2/t14
公開者
HEPData
データ作成者 (e-Rad)
  • CMS Collaboration

説明

The production of $\Upsilon(2S)$ and $\Upsilon(3S)$ mesons in lead-lead ($\text{PbPb}$) and proton-proton ($\text{pp}$) collisions is studied in their dimuon decay channel using the CMS detector at the LHC. The $\Upsilon(3S)$ meson is observed for the first time in \PbPb collisions, with a significance above five standard deviations. The nuclear modification factors, derived from the ratio of yields measured in $\text{PbPb}$ to $\text{pp}$ collisions, are reported for both $\Upsilon(2S)$ and $\Upsilon(3S)$ mesons as functions of $\Upsilon$ meson transverse momentum and $\text{PbPb}$ collision centrality. The suppression is found to be stronger for $\Upsilon(3S)$ mesons compared to $\Upsilon(2S)$ mesons, extending the pattern of sequential suppression of quarkonium states in nuclear collisions previously seen for the $J/\psi$, $\psi(2S)$, $\Upsilon(1S)$ and $\Upsilon(2S)$ mesons. The results provide new constraints on theoretical descriptions of the dynamics of quarkonium states in heavy ion collisions.

Yields for $\Upsilon(1S)$ mesons in PbPb collisions in $p_\text{T} < 30GeV/c$ and $|y| < 2.4$, corrected for acceptance and efficiency, and normalized by the nuclear thickness function $\langle T_{AA} \rangle$ and the number of minimum bias events $N_{MB}$. The numbers are in units of pb$/GeV/c$. The values and global integrated luminosity uncertainty are quoted from data taken from CMS in 2018 LHC PbPb run.

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