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Measurement of in-medium jet modification using direct photon + jet and π0 + jet correlations in p + p and central Au + Au collisions at √sNN = 200 GeV

The STAR Collaboration presents measurements of the semi-inclusive distribution of charged-particle jets recoiling from energetic direct-photon (𝛾dir) and neutral-pion (𝜋0) triggers in 𝑝 +𝑝 and central Au +Au collisions at √𝑠𝑁⁢𝑁 =200 GeV over a broad kinematic range, for jet resolution parameters 𝑅...

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Main Authors: Aboona, Bassam (Author) , Deppner, Ingo Martin (Author) , Herrmann, Norbert (Author) , Leung, Yue (Author) , Söhngen, Yannick (Author) , Weidenkaff, Philipp (Author)
Corporate Author: STAR Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 11 June 2025
In: Physical review letters
Year: 2025, Volume: 134, Issue: 23, Pages: 1-9
ISSN:1079-7114
DOI:10.1103/PhysRevLett.134.232301
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.134.232301
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.134.232301
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Author Notes:B.E. Aboona, I.M. Deppner, N. Herrmann, Y.H. Leung, Y. Söhngen, P.C. Weidenkaff und weitere 362 (STAR Collaboration)
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Summary:The STAR Collaboration presents measurements of the semi-inclusive distribution of charged-particle jets recoiling from energetic direct-photon (𝛾dir) and neutral-pion (𝜋0) triggers in 𝑝 +𝑝 and central Au +Au collisions at √𝑠𝑁⁢𝑁 =200 GeV over a broad kinematic range, for jet resolution parameters 𝑅 =0.2 and 0.5. Medium-induced jet yield suppression is observed to be larger for 𝑅 =0.2 than for 0.5, reflecting the angular range of jet energy redistribution due to quenching. The predictions of model calculations incorporating jet quenching are not fully consistent with the observations. These results provide new insight into the physical origins of jet quenching.
Item Description:Im Titel steht der Ausdruck "sNN unter dem Wurzelsymbol
Im Titel ist die Zahl "0" hochgestellt und die Buchstaben "NN" sind tiefgestellt
Gesehen am 13.01.2026
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.134.232301

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