Name: Measurements of jet quenching using semi-inclusive hadron+jet distributions in pp and central Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV
Creator: ALICE Collaboration
Published: 2024

Abstract (data abstract)

The ALICE Collaboration reports measurements of the semi-inclusive distribution of charged-particle jets recoiling from a high transverse momentum (high $p_\mathrm{T}$) charged hadron, in pp and central Pb--Pb collisions at center of mass energy per nucleon--nucleon collision $\sqrt{s_\mathrm{NN}}=5.02$ TeV. The large uncorrelated background in central Pb--Pb collisions is corrected using a data-driven statistical approach, which enables precise measurement of recoil jet distributions over a broad range in $p_\mathrm{T,ch jet}$ and jet resolution parameter $R$. Recoil jet yields are reported for $R=$ 0.2, 0.4, and 0.5 in the range $7<p_\mathrm{T,ch jet}<140$ GeV/$c$ and $\pi/2<\Delta\varphi<\pi$, where $\Delta\varphi$ is the azimuthal angular separation between hadron trigger and recoil jet. The low $p_\mathrm{T,ch jet}$ reach of the measurement explores unique phase space for studying jet quenching, the interaction of jets with the quark--gluon plasma generated in high-energy nuclear collisions. Comparison of $p_\mathrm{T,ch jet}$ distributions from pp and central Pb--Pb collisions probes medium-induced jet energy loss and intra-jet broadening, while comparison of their acoplanarity distributions explores in-medium jet scattering and medium response. The measurements are compared to theoretical calculations incorporating jet quenching.

Table 1

Data from Figure 11 of preprint arxiv:2308.16128, Figure 1 (top panels) of preprint arxiv:2308.16131

10.17182/hepdata.152377.v1/t1

Corrected $\Delta_\mathrm{recoil} (p_\mathrm{T,ch jet})$ distributions measured for $R=$ 0.2, 0.4, and 0.5 in pp collisions at $\sqrt{s}=5.02$ TeV.
Table 2

Data from Figure 13 of preprint arxiv:2308.16128, Figure 1 (top panels) of preprint arxiv:2308.16131

10.17182/hepdata.152377.v1/t2

Corrected $\Delta_\mathrm{recoil} (p_\mathrm{T,ch jet})$ distributions measured for $R=$ 0.2, 0.4, and 0.5 in Pb--Pb collisions at $\sqrt{s}=5.02$ TeV.
Table 3

Data from Figure 15 of preprint arxiv:2308.16128, Figure 1 (bottom panels) of preprint arxiv:2308.16131

10.17182/hepdata.152377.v1/t3

$I_\mathrm{AA} (p_\mathrm{T,ch jet})$ measured for $R=$ 0.2, 0.4, and 0.5 in Pb--Pb collisions at $\sqrt{s}=5.02$ TeV.
Table 4

Data from Figure 12 (top) of preprint arxiv:2308.16128

10.17182/hepdata.152377.v1/t4

Corrected $\Delta_\mathrm{recoil} (\Delta\varphi)$ distributions measured for $R=$ 0.2 in pp collisions at $\sqrt{s}=5.02$ TeV, in $p_\mathrm{T,ch jet}$ bins [10,20], [20,30],...
Table 5

Data from Figure 12 (middle) of preprint arxiv:2308.16128, Figure 2 (top panels, [10,20], [20,30] and [30,50] GeV/$c$ only) of preprint arxiv:2308.16131

10.17182/hepdata.152377.v1/t5

Corrected $\Delta_\mathrm{recoil} (\Delta\varphi)$ distributions measured for $R=$ 0.4 in pp collisions at $\sqrt{s}=5.02$ TeV, in $p_\mathrm{T,ch jet}$ bins [10,20], [20,30],...
Table 6

Data from Figure 12 (bottom) of preprint arxiv:2308.16128

10.17182/hepdata.152377.v1/t6

Corrected $\Delta_\mathrm{recoil} (\Delta\varphi)$ distributions measured for $R=$ 0.5 in pp collisions at $\sqrt{s}=5.02$ TeV, in $p_\mathrm{T,ch jet}$ bins [10,20], [20,30],...
Table 7

Data from Figure 14 (top) of preprint arxiv:2308.16128

10.17182/hepdata.152377.v1/t7

Corrected $\Delta_\mathrm{recoil} (\Delta\varphi)$ distributions measured for $R=$ 0.2 in Pb--Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV, in $p_\mathrm{T,ch jet}$ bins [10,20], [20,30],...
Table 8

Data from Figure 14 (middle) of preprint arxiv:2308.16128, Figure 2 (top panels, [10,20], [20,30] and [30,50] GeV/$c$ only) of preprint arxiv:2308.16131

10.17182/hepdata.152377.v1/t8

Corrected $\Delta_\mathrm{recoil} (\Delta\varphi)$ distributions measured for $R=$ 0.4 in Pb--Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV, in $p_\mathrm{T,ch jet}$ bins [10,20], [20,30],...
Table 9

Data from Figure 14 (bottom) of preprint arxiv:2308.16128

10.17182/hepdata.152377.v1/t9

Corrected $\Delta_\mathrm{recoil} (\Delta\varphi)$ distributions measured for $R=$ 0.5 in Pb--Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV, in $p_\mathrm{T,ch jet}$ bins [10,20], [20,30],...
Table 10

Data from Figure 19 of preprint arxiv:2308.16128

10.17182/hepdata.152377.v1/t10

$I_\mathrm{AA} (\Delta\varphi)$ distributions measured for $R=$ 0.2 in Pb--Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV, in $p_\mathrm{T,ch jet}$ bins [10,20], [20,30], [30,50]...
Table 11

Data from Figure 20 of preprint arxiv:2308.16128, Figure 2 (bottom panles, [10,20], [20,30] and [30,50] GeV/$c$ only) of preprint arxiv:2308.16131

10.17182/hepdata.152377.v1/t11

$I_\mathrm{AA} (\Delta\varphi)$ distributions measured for $R=$ 0.4 in Pb--Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV, in $p_\mathrm{T,ch jet}$ bins [10,20], [20,30], [30,50]...
Table 12

Data from Figure 21 of preprint arxiv:2308.16128

10.17182/hepdata.152377.v1/t12

$I_\mathrm{AA} (\Delta\varphi)$ distributions measured for $R=$ 0.5 in Pb--Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV, in $p_\mathrm{T,ch jet}$ bins [10,20], [20,30], [30,50]...
Table 13

Data from Figure 18 (top) of preprint arxiv:2308.16128

10.17182/hepdata.152377.v1/t13

$\Delta_\mathrm{recoil} (p_\mathrm{T,ch jet})$ ratios $R=$ 0.2 / 0.4 in pp and Pb--Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV.
Table 14

Data from Figure 18 (middle) of preprint arxiv:2308.16128

10.17182/hepdata.152377.v1/t14

$\Delta_\mathrm{recoil} (p_\mathrm{T,ch jet})$ ratios $R=$ 0.2 / 0.5 in pp and Pb--Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV.
Table 15

Data from Figure 18 (bottom) of preprint arxiv:2308.16128

10.17182/hepdata.152377.v1/t15

$\Delta_\mathrm{recoil} (p_\mathrm{T,ch jet})$ ratios $R=$ 0.4 / 0.5 in pp and Pb--Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV.
Table 16

Data from Figure 16 (top) of preprint arxiv:2308.16128

10.17182/hepdata.152377.v1/t16

$\Delta_\mathrm{recoil} (p_\mathrm{T,ch jet})$ for $R=$ 0.2, for various $\mathrm{TT_{sig}}$ selections in Pb--Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV.
Table 17

Data from Figure 16 (bottom) of preprint arxiv:2308.16128

10.17182/hepdata.152377.v1/t17

$\Delta_\mathrm{recoil} (p_\mathrm{T,ch jet})$ for $R=$ 0.4, for various $\mathrm{TT_{sig}}$ selections in Pb--Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV.

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