Abstract (data abstract)

Two-particle correlations with K$^{0}_\mathrm{S}$, $\Lambda/\overline{\Lambda}$, and charged hadrons as trigger particles in the transverse momentum range $8 < p_\mathrm{T,trig}<16$ GeV/$c$, and associated charged particles within $1 < p_\mathrm{T,assoc}<8$ GeV/$c$, are studied at mid-rapidity in pp and central Pb$-$Pb collisions at a centre-of-mass energy per nucleon--nucleon collision $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ALICE detector at the LHC. After subtracting the contributions of the flow background, the per-trigger yields are extracted on both the near and away sides, and the ratio in Pb$-$Pb collisions with respect to pp collisions ($I_{\mathrm{AA}}$) is computed. The per-trigger yield in Pb$-$Pb collisions on the away side is strongly suppressed to the level of $I_{\mathrm{AA}}$ $\approx 0.6$ for $p_\mathrm{T,assoc}>3$ GeV/$c$ as expected from strong in-medium energy loss, while an enhancement develops at low $p_\mathrm{T,assoc}$ on both the near and away sides, reaching $I_{\mathrm{AA}}$ $\approx 1.8$ and $2.7$ respectively. These findings are in good agreement with previous ALICE measurements from two-particle correlations triggered by neutral pions ($\pi^{0}$--h) and charged hadrons (h--h) in Pb$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}= 2.76$ TeV. Moreover, the correlations with K$^{0}_\mathrm{S}$ mesons and $\Lambda/\overline{\Lambda}$ baryons as trigger particles are compared to those of inclusive charged hadrons. The results are compared with the predictions of Monte Carlo models.

Table 1

Data from Figure 1

10.17182/hepdata.140841.v1/t1

Distributions of $C(\Delta\varphi)$ for h$-$h, K$^{0}_\mathrm{S}$-h,and ($\Lambda+\overline{\Lambda})-$h as trigger particles with $8 < p_\mathrm{T,trig}<16 \mathrm{GeV}/c$ and associated particles with $4...
Table 2.1

Data from Figure 2, left top panel.

10.17182/hepdata.140841.v1/t2

Near-side of per-trigger yield modification, ($I_{\mathrm{AA}}$), of h$-$h, K$^{0}_\mathrm{S}$-h,and $(\Lambda+\overline{\Lambda})-$h trigger momentum range is $8< p_{T}^{trig} < 16~\mathrm{GeV}/c$, and associated...
Table 2.2

Data from Figure 2, right top panel.

10.17182/hepdata.140841.v1/t3

Away-side of per-trigger yield modification, ($I_{\mathrm{AA}}$), of h$-$h, K$^{0}_\mathrm{S}-$h,and $(\Lambda+\overline{\Lambda})-$h trigger momentum range is $8< p_{T}^{trig} < 16~\mathrm{GeV}/c$, and associated...
Table 3.1

Data from Figure 4, left top panel.

10.17182/hepdata.140841.v1/t4

Near-side ratios of V^{0}-triggered yields to charged-hadron triggered (h$-$h) ones, ${{Y}^{K^{0}_{S}-\mathrm{h}}_{\Delta\varphi}}/{{Y}^{\mathrm{h-h}}_{\Delta\varphi}}$ and ${{Y}^{(\Lambda+\overline{\Lambda})-\mathrm{h}}_{\Delta\varphi}}/{{Y}^{\mathrm{h-h}}_{\Delta\varphi}}$ in Pb-Pb collisions.
Table 3.2

Data from Figure 4, right top panel.

10.17182/hepdata.140841.v1/t5

Away-side ratios of V^{0}-triggered yields to charged-hadron triggered (h$-$h) ones, ${{Y}^{K^{0}_{S}-\mathrm{h}}_{\Delta\varphi}}/{{Y}^{\mathrm{h-h}}_{\Delta\varphi}}$ and ${{Y}^{(\Lambda+\overline{\Lambda})-\mathrm{h}}_{\Delta\varphi}}/{{Y}^{\mathrm{h-h}}_{\Delta\varphi}}$ in Pb-Pb collisions.
Table 3.3

Data from Figure 4, left bottom panel.

10.17182/hepdata.140841.v1/t6

Near-side ratios of V^{0}-triggered yields to charged-hadron triggered (h--h) ones, ${{Y}^{K^{0}_{S}-\mathrm{h}}_{\Delta\varphi}}/{{Y}^{\mathrm{h-h}}_{\Delta\varphi}}$ and ${{Y}^{(\Lambda+\overline{\Lambda})-\mathrm{h}}_{\Delta\varphi}}/{{Y}^{\mathrm{h-h}}_{\Delta\varphi}}$ in pp collisions.
Table 3.4

Data from Figure 4, right bottom panel.

10.17182/hepdata.140841.v1/t7

Away-side ratios of V^{0}-triggered yields to charged-hadron triggered (h--h) ones, ${{Y}^{K^{0}_{S}-\mathrm{h}}_{\Delta\varphi}}/{{Y}^{\mathrm{h-h}}_{\Delta\varphi}}$ and ${{Y}^{(\Lambda+\overline{\Lambda})-\mathrm{h}}_{\Delta\varphi}}/{{Y}^{\mathrm{h-h}}_{\Delta\varphi}}$ in Pb-Pb collisions.

Table 1

Table 2.1

Table 2.2

Table 3.1

Table 3.2

Table 3.3

Table 3.4

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