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000356873 0247_ $$2doi$$a10.17182/HEPDATA.152376
000356873 037__ $$aGSI-2025-00256
000356873 041__ $$aEnglish
000356873 1001_ $$0P:(DE-HGF)0$$aALICE Collaboration$$b0$$eCorresponding author
000356873 245__ $$aObservation of medium-induced yield enhancement and acoplanarity broadening of low-$p_\mathrm{T}$ jets from measurements in pp and central Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV
000356873 260__ $$c2024
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000356873 500__ $$aJournal Article GSI record: GSI-2025-00255
000356873 520__ $$aThe 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.
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000356873 536__ $$0G:(EU-Grant)824093$$aSTRONG-2020 - The strong interaction at the frontier of knowledge: fundamental research and applications (824093)$$c824093$$fH2020-INFRAIA-2018-1$$x5
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000356873 773__ $$a10.17182/HEPDATA.152376
000356873 7870_ $$0GSI-2025-00255$$aAcharya, Shreyasi et.al.$$dCollege Park, Md. : APS, 2024$$iRelatedTo$$rarXiv:2308.16131 ; CERN-EP-2023-189$$tObservation of medium-induced yield enhancement and acoplanarity broadening of low-$p_T$ Jets from measurements in pp and Central Pb-Pb Collisions at $\sqrt{s_{NN}}$=5.02 TeV
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