Semi-inclusive direct photon + jet and π0+jet correlations measured in p + p and central Au + Au collisions at √sNN=200 GeV
The Solenoidal Tracker at RHIC (STAR) experiment at the Relativistic Heavy Ion Collider reports new measurements of jet quenching based on the semi-inclusive distribution of charged-particle jets recoiling from direct photon (𝛾dir) and neutral pion (𝜋0) triggers in 𝑝𝑝 and central Au+Au collisions at...
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| Main Authors: | , , , , |
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| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
1 July 2025
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| In: |
Physical review
Year: 2025, Volume: 111, Issue: 6, Pages: 1-30 |
| ISSN: | 2469-9993 |
| DOI: | 10.1103/8b8y-98yh |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/8b8y-98yh Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/8b8y-98yh 
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| Author Notes: | The STAR Collaboration* |
MARC
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| 500 | |a *The STAR Collaboration: B.E. Aboona, I.M. Deppner, N. Herrmann, Y.H. Leung, Y. Söhngen [und 363 weitere Personen] | ||
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| 520 | |a The Solenoidal Tracker at RHIC (STAR) experiment at the Relativistic Heavy Ion Collider reports new measurements of jet quenching based on the semi-inclusive distribution of charged-particle jets recoiling from direct photon (dir) and neutral pion (0) triggers in and central Au+Au collisions at √=200GeV for triggers in the range 9<trig<20GeV. The datasets have integrated luminosities of 3.9nb−1 for Au+Au and 23pb−1 for collisions. Jets are reconstructed using the anti- algorithm with resolution parameters =0.2 and 0.5. The large uncorrelated jet background in central Au+Au collisions is corrected using a mixed-event approach, which enables precise charged-particle jet measurements at low transverse momentum ch,jet and large . Recoil-jet distributions are reported in the range ch,jet<25 GeV/. Comparison of the distributions measured in and Au+Au collisions reveals strong medium-induced jet yield suppression for =0.2 with markedly less suppression for =0.5. Comparison is also made to theoretical models incorporating jet quenching. These data provide new insight into the mechanisms underlying jet quenching and the angular dependence of medium-induced jet-energy transport and provide new constraints on modeling such effects. | ||
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