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

STAR Collaboration

doi:10.1103/PhysRevLett.134.232301

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

STAR Collaboration

Texas A&M University
Czech Technical University in Prague
AGH University of Krakow
Panjab University
Variable Energy Cyclotron Centre India
Brookhaven National Laboratory
Indian Institute of Technology Patna
Abilene Christian University
Universidad de Tarapacá
Shandong University
University of California at Riverside
Indian Institute of Science Education and Research, Tirupati
University of Houston
University of Jammu
Stony Brook University
Czech Academy of Sciences
Ohio State University
Chinese Academy of Sciences
Yale University
University of California at Davis
Lawrence Berkeley National Laboratory
University of California at Los Angeles
Indiana University Bloomington
National Institute of Technology, Durgapur
Fudan University
Guangxi Normal University
Tsinghua University
University of California at Berkeley
Eötvös Loránd University
University of Illinois at Chicago

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

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 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.

Original language	English
Article number	232301
Journal	Physical Review Letters
Volume	134
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.134.232301
State	Published - Jun 13 2025

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10.1103/PhysRevLett.134.232301

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@article{dd9e7cf6fa1946d89f84b2644e906af0,

title = "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",

abstract = "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 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.",

author = "\{STAR Collaboration\} and Aboona, \{B. E.\} and J. Adam and L. Adamczyk and I. Aggarwal and Aggarwal, \{M. M.\} and Z. Ahammed and Anderson, \{D. M.\} and Aschenauer, \{E. C.\} and S. Aslam and J. Atchison and V. Bairathi and X. Bao and K. Barish and S. Behera and R. Bellwied and P. Bhagat and A. Bhasin and S. Bhatta and Bhosale, \{S. R.\} and J. Bielcik and J. Bielcikova and Brandenburg, \{J. D.\} and C. Broodo and Cai, \{X. Z.\} and H. Caines and S{\'a}nchez, \{M. Calder{\'o}n De La Barca\} and D. Cebra and J. Ceska and I. Chakaberia and P. Chaloupka and Chan, \{B. K.\} and Z. Chang and A. Chatterjee and D. Chen and J. Chen and Chen, \{J. H.\} and Q. Chen and Z. Chen and J. Cheng and Y. Cheng and W. Christie and X. Chu and S. Corey and Crawford, \{H. J.\} and M. Csan{\'a}d and G. Dale-Gau and A. Das and A. Deshpande and J. Jia and R. Lacey",

note = "Publisher Copyright: {\textcopyright} 2025 American Physical Society.",

year = "2025",

month = jun,

day = "13",

doi = "10.1103/PhysRevLett.134.232301",

language = "English",

volume = "134",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "23",

}

TY - JOUR

T1 - 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

AU - STAR Collaboration

AU - Aboona, B. E.

AU - Adam, J.

AU - Adamczyk, L.

AU - Aggarwal, I.

AU - Aggarwal, M. M.

AU - Ahammed, Z.

AU - Anderson, D. M.

AU - Aschenauer, E. C.

AU - Aslam, S.

AU - Atchison, J.

AU - Bairathi, V.

AU - Bao, X.

AU - Barish, K.

AU - Behera, S.

AU - Bellwied, R.

AU - Bhagat, P.

AU - Bhasin, A.

AU - Bhatta, S.

AU - Bhosale, S. R.

AU - Bielcik, J.

AU - Bielcikova, J.

AU - Brandenburg, J. D.

AU - Broodo, C.

AU - Cai, X. Z.

AU - Caines, H.

AU - Sánchez, M. Calderón De La Barca

AU - Cebra, D.

AU - Ceska, J.

AU - Chakaberia, I.

AU - Chaloupka, P.

AU - Chan, B. K.

AU - Chang, Z.

AU - Chatterjee, A.

AU - Chen, D.

AU - Chen, J.

AU - Chen, J. H.

AU - Chen, Q.

AU - Chen, Z.

AU - Cheng, J.

AU - Cheng, Y.

AU - Christie, W.

AU - Chu, X.

AU - Corey, S.

AU - Crawford, H. J.

AU - Csanád, M.

AU - Dale-Gau, G.

AU - Das, A.

AU - Deshpande, A.

AU - Jia, J.

AU - Lacey, R.

PY - 2025/6/13

Y1 - 2025/6/13

N2 - 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 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.

AB - 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 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.

UR - https://www.scopus.com/pages/publications/105008474828

U2 - 10.1103/PhysRevLett.134.232301

DO - 10.1103/PhysRevLett.134.232301

M3 - Article

C2 - 40577754

AN - SCOPUS:105008474828

SN - 0031-9007

VL - 134

JO - Physical Review Letters

JF - Physical Review Letters

IS - 23

M1 - 232301

ER -

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

Abstract

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