Abstract (data abstract)

The production yields of non-prompt $\mathrm{D}_{s}^{+}$ mesons, namely $\mathrm{D}_{s}^{+}$ mesons from beauty-hadron decays, were measured for the first time as a function of the transverse momentum ($p_{T}$) at midrapidity ($|y|<0.5$) in central and semi-central Pb--Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{NN}}=5.02~$TeV with the ALICE experiment at the LHC.The $\mathrm{D}_{s}^{\pm}$ mesons were reconstructed from the hadronic decay channel $\rm D_s^{+}\to \phi\pi^+$, with $\rm \phi\to K^-K^+$, in the $4<p_{T}<36~$GeV/$c$ and $2<p_{T}<24~$GeV/$c$ intervals for the 0--10\% and 30--50\% centrality classes, respectively.The measured yields of non-prompt $\mathrm{D}_{s}^{+}$ mesons are compared to those of prompt $\mathrm{D}_{s}^{+}$ and non-prompt $\mathrm{D}^{0}$ mesons by calculating the ratios of the production yields in Pb--Pb collisions and the nuclear modification factor Raa. The ratio between the Raa of non-prompt $\mathrm{D}_{s}^{+}$ and prompt $\mathrm{D}_{s}^{+}$ mesons, and that between the Raa of non-prompt $\mathrm{D}_{s}^{+}$ and non-prompt $\mathrm{D}^{0}$ mesons in central Pb--Pb collisions are found to be on average higher than unity in the $4<p_{T}<12~$GeV/$c$ interval with a statistical significance of about $1.6\,\sigma$ and $1.7\,\sigma$, respectively. The measured Raa ratios are compared with the predictions of theoretical models of heavy-quark transport in a hydrodynamically expanding QGP that incorporate hadronisation via quark recombination.

Table 0

Data from Figure 4 (blue markers)

10.17182/hepdata.135986.v1/t1

Production yield of non-prompt $\mathrm{D}_{s}^{\pm}$ candidates average for 0-10% Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV.
Table 1

Data from Figure 4 (green markers)

10.17182/hepdata.135986.v1/t2

Production yield of non-prompt $\mathrm{D}_{s}^{\pm}$ candidates average for 30-50% Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV.
Table 2

Data from Figure 5

10.17182/hepdata.135986.v1/t3

Yield ratio of non-prompt over prompt $\mathrm{D}_{s}^{+}$ for 0-10% Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV.
Table 3

Data from Figure 5

10.17182/hepdata.135986.v1/t4

Yield ratio of non-prompt over prompt $\mathrm{D}_{s}^{+}$ for 30-50% Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV.
Table 4

Data from Figure 5

10.17182/hepdata.135986.v1/t5

Yield ratio of non-prompt $\mathrm{D}_{s}^{+}$ over non-prompt $\mathrm{D}^{0}$ for pp collisions at $\sqrt{s} = 5.02$ TeV.
Table 5

Data from Figure 5

10.17182/hepdata.135986.v1/t6

Yield ratio of non-prompt $\mathrm{D}_{s}^{+}$ over non-prompt $\mathrm{D}^{0}$ for 0-10% Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV.
Table 6

Data from Figure 5

10.17182/hepdata.135986.v1/t7

Yield ratio of non-prompt $\mathrm{D}_{s}^{+}$ over non-prompt $\mathrm{D}^{0}$ for 30-50% Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV.
Table 7

Data from Figure 6 (top panels, blue points)

10.17182/hepdata.135986.v1/t8

Non-prompt $\mathrm{D}_{s}^{+}$ Raa in 0-10% collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV.
Table 8

Data from Figure 6 (bottom panels, blue points)

10.17182/hepdata.135986.v1/t9

Non-prompt $\mathrm{D}_{s}^{+}$ Raa in 30-50% collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV.
Table 9

Data from Figure 7 (right panel, orange points)

10.17182/hepdata.135986.v1/t10

Non-prompt $\mathrm{D}_{s}^{+}$ over non-prompt $\mathrm{D}^{0}$ Raa in 0-10% collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV.
Table 10

Data from Figure 7 (right panel, blue points)

10.17182/hepdata.135986.v1/t11

Non-prompt $\mathrm{D}_{s}^{+}$ over non-prompt $\mathrm{D}^{0}$ Raa in 30-50% collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV.
Table 11

Data from Figure 7 (left panel, orange points)

10.17182/hepdata.135986.v1/t12

Non-prompt over prompt $\mathrm{D}_{s}^{+}$ Raa in 0-10% collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV.
Table 12

Data from Figure 7 (left panel, blue points)

10.17182/hepdata.135986.v1/t13

Non-prompt over prompt $\mathrm{D}_{s}^{+}$ Raa in 0-10% collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV.

Table 0

Table 1

Table 2

Table 3

Table 4

Table 5

Table 6

Table 7

Table 8

Table 9

Table 10

Table 11

Table 12

JSON

YAML

YODA

YODA1

ROOT

CSV

Visualize

Ask a Question