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When using this data, please cite the original publication:

The CMS collaboration (2014).

Measurement of Prompt $\psi(2S) \to J/\psi$ Yield Ratios in Pb-Pb and $p-p$ Collisions at $\sqrt {s_{NN}}=$ 2.76 TeV. Phys.Rev.Lett. 113 (2014) 262301.

https://doi.org/10.1103/PhysRevLett.113.262301

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Additionally, you should also cite the record:

The CMS collaboration (2014).

Measurement of Prompt $\psi(2S) \to J/\psi$ Yield Ratios in Pb-Pb and $p-p$ Collisions at $\sqrt {s_{NN}}=$ 2.76 TeV. HEPData.

https://doi.org/10.17182/hepdata.66548

You can also cite the 4 data tables individually:

The CMS collaboration (2014).

"Table 1" of "Measurement of Prompt $\psi(2S) \to J/\psi$ Yield Ratios in Pb-Pb and $p-p$ Collisions at $\sqrt {s_{NN}}=$ 2.76 TeV". HEPData.

https://doi.org/10.17182/hepdata.66548.v1/t1

The CMS collaboration (2014).

"Table 2" of "Measurement of Prompt $\psi(2S) \to J/\psi$ Yield Ratios in Pb-Pb and $p-p$ Collisions at $\sqrt {s_{NN}}=$ 2.76 TeV". HEPData.

https://doi.org/10.17182/hepdata.66548.v1/t2

The CMS collaboration (2014).

"Table 3" of "Measurement of Prompt $\psi(2S) \to J/\psi$ Yield Ratios in Pb-Pb and $p-p$ Collisions at $\sqrt {s_{NN}}=$ 2.76 TeV". HEPData.

https://doi.org/10.17182/hepdata.66548.v1/t3

The CMS collaboration (2014).

"Table 4" of "Measurement of Prompt $\psi(2S) \to J/\psi$ Yield Ratios in Pb-Pb and $p-p$ Collisions at $\sqrt {s_{NN}}=$ 2.76 TeV". HEPData.

https://doi.org/10.17182/hepdata.66548.v1/t4

When using this data, please cite the original publication:

The CMS collaboration (2014).

Measurement of Prompt $\psi(2S) \to J/\psi$ Yield Ratios in Pb-Pb and $p-p$ Collisions at $\sqrt {s_{NN}}=$ 2.76 TeV. Phys.Rev.Lett. 113 (2014) 262301.

https://doi.org/10.1103/PhysRevLett.113.262301

View Inspire Record Download BibTeX from Inspire

Additionally, you should also cite the record:

@misc {
    1320775,
    title = "{Measurement of Prompt $\psi(2S) \to J/\psi$ Yield Ratios in Pb-Pb and $p-p$ Collisions at $\sqrt {s_{NN}}=$ 2.76  TeV}",
    abstract = "CERN-LHC. The ratio between the prompt psi(2S) and J/psi yields, reconstructed via their decays into muon pairs, is measured in lead-lead and proton-proton collisions at a centre-of-mass energy per nucleon-nucleon pair of 2.76 TeV. The analysis is based on lead-lead and proton-proton data samples collected by CMS at the LHC, corresponding to integrated luminosities of 150 mub^-1 and 5.4 pb^-1, respectively. The double ratio of measured yields, $(N_{\psi\mathrm{(2S)}} / N_{J/\psi})_{\mathrm{PbPb}} / (N_{\psi\mathrm{(2S)}} / N_{J/\psi})_{pp}$, is computed in three lead-lead collision centrality bins and two kinematic ranges: one at midrapidity, |y|&lt;1.6, covering the transverse momentum range 6.5&lt;pT&lt;30 GeV/c, and the other at forward rapidity, 1.6&lt;|y|&lt;2.4, extending to lower pT values, 3&lt;pT&lt;30 GeV/c. The centrality-integrated double ratio changes from 0.45 +/- 0.13 (stat) +/- 0.07 (syst) in the first range to 1.67 +- 0.34 (stat) +- 0.27 (syst) in the second. This difference is most pronounced in the most central collisions.",
    doi = "10.17182/hepdata.66548",
    url = "https://doi.org/10.17182/hepdata.66548",
    year = "2014",
    type = "Data Collection",
    collaboration = "CMS",
    authors = "Khachatryan, Vardan and others"
}

You can also cite the 4 data tables individually:

Table 1

@misc {
    1320775/t1,
    title = "{'Table 1' of 'Measurement of Prompt $\psi(2S) \to J/\psi$ Yield Ratios in Pb-Pb and $p-p$ Collisions at $\sqrt {s_{NN}}=$ 2.76  TeV'}",
    abstract = "Double ratio of measured yields, $(N_{\psi\mathrm{(2S)}} / N_{J/\psi})_{\mathrm{PbPb}} / (N_{\psi\mathrm{(2S)}} / N_{J/\psi})_{pp}$, as a function of centrality, for the midrapidity...",
    doi = "10.17182/hepdata.66548.v1/t1",
    url = "https://doi.org/10.17182/hepdata.66548.v1/t1",
    year = "2014",
    type = "Data Set",
    collaboration = "CMS",
    authors = "Khachatryan, Vardan and others"
}

Table 2

@misc {
    1320775/t2,
    title = "{'Table 2' of 'Measurement of Prompt $\psi(2S) \to J/\psi$ Yield Ratios in Pb-Pb and $p-p$ Collisions at $\sqrt {s_{NN}}=$ 2.76  TeV'}",
    abstract = "Double ratio of measured yields, $(N_{\psi\mathrm{(2S)}} / N_{J/\psi})_{\mathrm{PbPb}} / (N_{\psi\mathrm{(2S)}} / N_{J/\psi})_{pp}$, as a function of centrality, for the forward...",
    doi = "10.17182/hepdata.66548.v1/t2",
    url = "https://doi.org/10.17182/hepdata.66548.v1/t2",
    year = "2014",
    type = "Data Set",
    collaboration = "CMS",
    authors = "Khachatryan, Vardan and others"
}

Table 3

@misc {
    1320775/t3,
    title = "{'Table 3' of 'Measurement of Prompt $\psi(2S) \to J/\psi$ Yield Ratios in Pb-Pb and $p-p$ Collisions at $\sqrt {s_{NN}}=$ 2.76  TeV'}",
    abstract = "Double ratio of measured yields, $(N_{\psi\mathrm{(2S)}} / N_{J/\psi})_{\mathrm{PbPb}} / (N_{\psi\mathrm{(2S)}} / N_{J/\psi})_{pp}$, integrated over centrality, for the midrapidity and forward...",
    doi = "10.17182/hepdata.66548.v1/t3",
    url = "https://doi.org/10.17182/hepdata.66548.v1/t3",
    year = "2014",
    type = "Data Set",
    collaboration = "CMS",
    authors = "Khachatryan, Vardan and others"
}

Table 4

@misc {
    1320775/t4,
    title = "{'Table 4' of 'Measurement of Prompt $\psi(2S) \to J/\psi$ Yield Ratios in Pb-Pb and $p-p$ Collisions at $\sqrt {s_{NN}}=$ 2.76  TeV'}",
    abstract = "Nuclear modification factor RAA of psi(2S) integrated over centrality, for the midrapidity and forward rapidity analysis bins.",
    doi = "10.17182/hepdata.66548.v1/t4",
    url = "https://doi.org/10.17182/hepdata.66548.v1/t4",
    year = "2014",
    type = "Data Set",
    collaboration = "CMS",
    authors = "Khachatryan, Vardan and others"
}

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