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Measurement of medium-induced acoplanarity in central Au-Au and pp collisions at √sNN = 200 GeV using direct-photon+jet and π+ jet correlations

  • B. E. Aboona
  • , J. Adam
  • , L. Adamczyk
  • , I. Aggarwal
  • , M. M. Aggarwal
  • , Z. Ahammed
  • , A. K. Alshammri
  • , D. M. Anderson
  • , E. C. Aschenauer
  • , S. Aslam
  • , J. Atchison
  • , V. Bairathi
  • , X. Bao
  • , P. Barik
  • , K. Barish
  • , S. Behera
  • , R. Bellwied
  • , P. Bhagat
  • , A. Bhasin
  • , S. Bhatta
    • S. R. Bhosale, J. Bielcik, J. Bielcikova, J. D. Brandenburg, C. Broodo, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, J. Ceska, I. Chakaberia, P. Chaloupka, Y. S. Chang, Z. Chang, A. Chatterjee, D. Chen, J. H. Chen, Q. Chen, W. Chen, Z. Chen, J. Cheng, Y. Cheng, W. Christie, X. Chu, S. Corey, H. J. Crawford, M. Csanád, G. Dale-Gau, A. Das, D. De Souza Lemos, I. M. Deppner, A. Deshpande, A. Dhamija, A. Dimri, P. Dixit, X. Dong, J. L. Drachenberg, E. Duckworth, J. C. Dunlop, Y. S. El-Feky, J. Engelage, G. Eppley, S. Esumi, O. Evdokimov, O. Eyser, B. Fan, R. Fatemi, S. Fazio, H. Feng, Y. Feng, E. Finch, Y. Fisyak, F. A. Flor, C. Fu, T. Fu, C. A. Gagliardi, T. Galatyuk, T. Gao, Y. Gao, G. Garcia, F. Geurts, A. Gibson, A. Giri, K. Gopal, X. Gou, D. Grosnick, A. Gu, J. Gu, A. Gupta, W. Guryn, A. Hamed, R. J. Hamilton, J. Han, X. Han, S. Harabasz, M. D. Harasty, J. W. Harris, H. Harrison-Smith, L. B. Havener, X. H. He, Y. He, N. Herrmann, L. Holub, C. Hu, Q. Hu, Y. Hu, H. Huang, H. Z. Huang, S. L. Huang, T. Huang, Y. Huang, M. Isshiki, P. M. Jacobs, W. W. Jacobs, A. Jalotra, C. Jena, A. Jentsch, Y. Ji, J. Jia, X. Jiang, C. Jin, Y. Jin, N. Jindal, X. Ju, E. G. Judd, S. Kabana, D. Kalinkin, J. Kang, K. Kang, A. R. Kanuganti, D. Kapukchyan, K. Kauder, D. Keane, M. Kesler, A. Khanal, Y. V. Khyzhniak, D. P. Kikoła, J. Kim, D. Kincses, I. Kisel, A. Kiselev, A. G. Knospe, J. Koła´s, B. Korodi, L. K. Kosarzewski, L. Kumar, M. C. Labonte, R. Lacey, J. M. Landgraf, C. Larson, J. Lauret, A. Lebedev, J. H. Lee, Y. H. Leung, C. Li, D. Li, H. S. Li, H. Li, W. Li, X. Li, Y. Li, Z. Li, X. Liang, R. Licenik, T. Lin, Y. Lin, M. A. Lisa, C. Liu, G. Liu, H. Liu, L. Liu, Z. Liu, T. Ljubicic, O. Lomicky, E. M. Loyd, T. Lu, J. Luo, X. F. Luo, L. Ma, R. Ma, Y. G. Ma, N. Magdy, D. Mallick, R. Manikandhan, C. Markert, O. Matonoha, K. Mi, S. Mioduszewski, B. Mohanty, B. Mondal, M. M. Mondal, I. Mooney, J. Mrazkova, M. I. Nagy, C. J. Naim, A. S. Nain, J. D. Nam, M. Nasim, H. Nasrulloh, J. M. Nelson, M. Nie, G. Nigmatkulov, T. Niida, T. Nonaka, G. Odyniec, A. Ogawa, S. Oh, K. Okubo, B. S. Page, S. Pal, A. Pandav, A. Panday, A. K. Pandey, T. Pani, A. Paul, S. Paul, D. Pawlowska, C. Perkins, S. Ping, J. Pluta, B. R. Pokhrel, I. D.Ponce Pinto, M. Posik, E. Pottebaum, S. Prodhan, T. L. Protzman, A. Prozorov, V. Prozorova, N. K. Pruthi, M. Przybycien, J. Putschke, Y. Qi, Z. Qin, H. Qiu, C. Racz, S. K. Radhakrishnan, A. Rana, R. L. Ray, R. Reed, C. W. Robertson, M. Robotkova, M. A.Rosales Aguilar, D. Roy, P. Roy Chowdhury, L. Ruan, A. K. Sahoo, N. R. Sahoo, H. Sako, S. Salur, S. S. Sambyal, J. K. Sandhu, S. Sato, B. C. Schaefer, N. Schmitz, F. J. Seck, J. Seger, R. Seto, P. Seyboth, N. Shah, P. V. Shanmuganathan, T. Shao, M. Sharma, N. Sharma, R. Sharma, S. R. Sharma, A. I. Sheikh, D. Shen, D. Y. Shen, K. Shen, S. Shi, Y. Shi, E. Shulga, F. Si, J. Singh, S. Singha, P. Sinha, M. J. Skoby, N. Smirnov, Y. Söhngen, Y. Song, T. D.S. Stanislaus, M. Stefaniak, Y. Su, M. Sumbera, X. Sun, Y. Sun, B. Surrow, M. Svoboda, Z. W. Sweger, A. C. Tamis, A. H. Tang, Z. Tang, T. Tarnowsky, J. H. Thomas, A. R. Timmins, D. Tlusty, D. Torres Valladares, S. Trentalange, P. Tribedy, S. K. Tripathy, T. Truhlar, B. A. Trzeciak, O. D. Tsai, C. Y. Tsang, Z. Tu, J. E. Tyler, T. Ullrich, D. G. Underwood, G. Van Buren, J. Vanek, I. Vassiliev, F. Videbæk, S. A. Voloshin, F. Wang, G. Wang, J. S. Wang, J. Wang, K. Wang, X. Wang, Y. Wang, Z. Wang, Z. Y. Wang, A. J. Watroba, J. C. Webb, P. C. Weidenkaff, G. D. Westfall, D. Wielanek, H. Wieman, G. Wilks, S. W. Wissink, R. Witt, C. P. Wong, J. Wu, X. Wu, B. Xi, Y. Xiao, Z. G. Xiao, G. Xie, W. Xie, H. Xu, N. Xu, Q. H. Xu, Y. Xu, Z. Xu, G. Yan, Z. Yan, C. Yang, Q. Yang, S. Yang, Y. Yang, Z. Ye, L. Yi, Y. Yu, H. Zbroszczyk, W. Zha, C. Zhang, D. Zhang, J. Zhang, L. Zhang, S. Zhang, W. Zhang, X. Zhang, Y. Zhang, Z. Zhang, F. Zhao, J. Zhao, S. Zhou, Y. Zhou, X. Zhu, M. Zurek, M. Zyzak
  • Texas A&M University
  • Czech Technical University in Prague
  • AGH University of Krakow
  • Panjab University
  • Variable Energy Cyclotron Centre India
  • Kent State University
  • Brookhaven National Laboratory
  • Fudan University
  • Abilene Christian University
  • Universidad de Tarapacá
  • Shandong University
  • Indian Institute of Science Education and Research, Berhampur
  • 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
  • Purdue University
  • Indiana University Bloomington
  • National Institute of Technology, Durgapur
  • Guangxi Normal University
  • Tsinghua University
  • University of California at Los Angeles
  • University of California at Berkeley
  • Eötvös Loránd University
  • Heidelberg University 
  • American University in Cairo
  • Rice University
  • University of Tsukuba
  • University of Illinois at Chicago
  • Central China Normal University
  • University of Kentucky
  • University of Calabria
  • Southern Connecticut State University
  • CAS - Institute of Modern Physics
  • Technische Universität Darmstadt
  • Valparaiso University
  • Huzhou University
  • University of Chinese Academy of Sciences
  • Academia Sinica Taiwan HQ
  • National Cheng Kung University
  • University of Science and Technology of China
  • Sejong University
  • Wayne State University
  • Warsaw University of Technology
  • Goethe University Frankfurt
  • Lehigh University
  • Wuhan University of Science and Technology
  • South China Normal University
  • Texas Southern University
  • University of Texas at Austin
  • National Institute of Science Education and Research
  • Lovely Professional University
  • Temple University
  • Rutgers - The State University of New Jersey, New Brunswick
  • Max Planck Institute for Physics (Werner Heisenberg Institute)
  • Creighton University
  • Indian Institute of Technology Patna
  • Ball State University
  • Michigan State University
  • Argonne National Laboratory
  • United States Naval Academy
  • Chongqing University
  • Lanzhou University

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

Abstract

The STAR Collaboration reports measurements of acoplanarity using semi-inclusive distributions of charged-particle jets recoiling from direct photon and π triggers, in central Au–Au and pp collisions at √sNN = 200 GeV. Significant medium-induced acoplanarity broadening is observed for large but not small recoil jet resolution parameter, corresponding to recoil jet yield enhancement up to a factor of ≈20 for trigger-recoil azimuthal separation far from π. This phenomenology is indicative of the response of the quark-gluon plasma to excitation, but not the scattering of jets off of its quasiparticles. The measurements are not well described by current theoretical models which incorporate jet quenching.

Original languageEnglish
JournalPhysical Review C
Volume113
Issue number1
DOIs
StatePublished - 2026

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