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 sNN−−−√=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 magnitude of suppression is similar for γdir- and π0-triggered data, which constrains the color-charge and path-length dependence of jet quenching. Theoretical model calculations incorporating jet quenching do not fully describe the measurements.
URN: | urn:nbn:de:hebis:30:3-862041 |
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URL: | https://arxiv.org/abs/2309.00156v1 |
DOI: | https://doi.org/10.48550/ARXIV.2309.00156 |
ArXiv Id: | http://arxiv.org/abs/2309.00156v1 |
Parent Title (English): | arXiv |
Publisher: | arXiv |
Document Type: | Preprint |
Language: | English |
Date of Publication (online): | 2023/08/31 |
Date of first Publication: | 2023/08/31 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Creating Corporation: | STAR Collaboration |
Release Date: | 2024/07/05 |
Issue: | 2309.00156v1 |
Edition: | Version 1 |
Page Number: | 7 |
Institutes: | Wissenschaftliche Zentren und koordinierte Programme / Frankfurt Institute for Advanced Studies (FIAS) |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Sammlungen: | Universitätspublikationen |
Licence (German): | ![]() |