Observation of medium-induced yield enhancement and acoplanarity broadening of low-𝑝T jets from measurements in 𝑝⁢𝑝 and central Pb-Pb collisions at √𝑠NN=5.02 TeV

The ALICE Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high transverse momentum (high 𝑝T) hadron trigger in proton-proton and central Pb-Pb collisions at √𝑠NN=5.02 TeV. A data-driven statistical method is used to mitigate the large u...

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Hauptverfasser: Acharya, Shreyasi (VerfasserIn) , Angelov, Venelin (VerfasserIn) , Berdnikova, Anastasia (VerfasserIn) , Bergmann, Luisa (VerfasserIn) , Bórquez Cárcamo, Andrés G. (VerfasserIn) , Danisch, Meike (VerfasserIn) , Feuillard, Victor (VerfasserIn) , Fokin, Ilya D. (VerfasserIn) , Glässel, Peter (VerfasserIn) , Nath, Abhishek (VerfasserIn) , Pachmayer, Yvonne C. (VerfasserIn) , Reygers, Klaus (VerfasserIn) , Schicker, Rainer (VerfasserIn) , Schlepper, Felix (VerfasserIn) , Seo, Jinjoo (VerfasserIn) , Skorodumovs, Georgijs (VerfasserIn) , Stachel, Johanna (VerfasserIn) , Stiefelmaier, Stephan (VerfasserIn) , Veen, Casper Arie van (VerfasserIn) , Windelband, Bernd (VerfasserIn) , Yüncü, Alperen (VerfasserIn) , Zanone, Federica (VerfasserIn)
Körperschaft: ALICE (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 9 July, 2024
In: Physical review letters
Year: 2024, Jahrgang: 133, Heft: 2, Pages: 1-13
ISSN:1079-7114
DOI:10.1103/PhysRevLett.133.022301
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevLett.133.022301
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.133.022301
Volltext
Verfasserangaben:ALICE Collaboration

MARC

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246 3 3 |a Observation of medium induced yield enhancement and acoplanarity broadening of low- T jets from measurements in ⁢ and central Pb-Pb collisions at square root NN equal 5.02 TeV 
264 1 |c 9 July, 2024 
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500 |a Im Titel sind T und NN tiefgestellt 
500 |a Gesehen am 05.08.2025 
500 |a ALICE Collaboration: S. Acharya, V. Anguelov, A. Berdnikova, L. Bergmann, A.G. Bórquez Carcamo, M.C. Danisch, V.J.G. Feuillard, I. Fokin, P. Glässel, A. Nath, Y. Pachmayer, K. Reygers, R. Schicker, F. Schlepper, J.J. Seo, G. Skorodumovs, J. Stachel, S.F. Stiefelmaier, C.A. van Veen, B. Windelband, A. Yüncü, F. Zanone, [und 1032 weitere] 
520 |a The ALICE Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high transverse momentum (high T) hadron trigger in proton-proton and central Pb-Pb collisions at √NN=5.02 TeV. A data-driven statistical method is used to mitigate the large uncorrelated background in central Pb-Pb collisions. Recoil jet distributions are reported for jet resolution parameter =0.2, 0.4, and 0.5 in the range 7<T,jet<140 GeV/ and trigger-recoil jet azimuthal separation /2<Δ⁢<. The measurements exhibit a marked medium-induced jet yield enhancement at low T and at large azimuthal deviation from Δ⁢∼. The enhancement is characterized by its dependence on Δ⁢, which has a slope that differs from zero by 4.7⁢. Comparisons to model calculations incorporating different formulations of jet quenching are reported. These comparisons indicate that the observed yield enhancement arises from the response of the QGP medium to jet propagation. 
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