Determining the jet transport coefficient (q)over-cap from inclusive hadron suppression measurements using Bayesian parameter estimation

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Cao, S. ^{[1, 2]} ; Chen, Y. ^[3] ; Coleman, J. ^[4] ; Mulligan, J. ^{[5, 6]} ; Jacobs, P. M. ^{[5, 6]} ; Soltz, R. A. ^{[7, 1]} ; Angerami, A. ^[7] ; Arora, R. ^[8] ; Bass, S. A. ^[9] ; Cunqueiro, L. ^{[10, 11]} ; Dai, T. ^[9] ; Du, L. ^[12] ; Ehlers, R. ^{[10, 11]} ; Elfner, H. ^{[13, 14, 15]} ; Everett, D. ^[12] ; Fan, W. ^[9] ; Fries, R. J. ^{[16, 17]} ; Gale, C. ^[18] ; Garza, F. ^{[16, 17]} ; He, Y. ^{[19, 20]} ; Heffernan, M. ^[18] ; Heinz, U. ^[12] ; Jacak, V, B. ; Jeon, S. ^[18] ; Ke, W. ^{[21, 22]} ; Kim, B. ^{[16, 17]} ; Kordell, II, M. ; Kumar, A. ^[1] ; Majumder, A. ^[1] ; Mak, S. ^[4] ; McNelis, M. ^[12] ; Nattrass, C. ^[10] ; Oliinychenko, D. ^[22] ; Park, C. ^{[18, 1]} ; Paquet, J-F ^[9] ; Putschke, J. H. ^[1] ; Roland, G. ^[23] ; Silva, A. ^[10] ; Schenke, B. ^[24] ; Schwiebert, L. ^[25] ; Shen, C. ^{[26, 1]} ; Sirimanna, C. ^[1] ; Tachibana, Y. ^{[1, 27]} ; Vujanovic, G. ^[1] ; Wang, X-N ^{[19, 20, 21, 22]} ; Wolpert, R. L. ^[4] ; Xu, Y. ^[9] ; Collaboration, JETSCAPE

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^[1] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48201 - USA

^[2] Shandong Univ, Inst Frontier & Interdisciplinary Sci, Qingdao 266237, Shandong - Peoples R China

^[3] MIT, Lab Nucl Sci, Cambridge, MA 02139 - USA

^[4] Duke Univ, Dept Stat Sci, Durham, NC 27708 - USA

^[5] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94270 - USA

^[6] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94270 - USA

^[7] Lawrence Livermore Natl Lab, Livermore, CA 94550 - USA

^[8] Univ Texas San Antonio, 1 UTSA Circle, San Antonio, TX 78249 - USA

^[9] Duke Univ, Dept Phys, Durham, NC 27708 - USA

^[10] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 - USA

^[11] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37830 - USA

^[12] Ohio State Univ, Dept Phys, Columbus, OH 43210 - USA

^[13] Frankfurt Inst Adv Studies, D-60438 Frankfurt - Germany

^[14] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt - Germany

^[15] Goethe Univ, Inst Theoret Phys, D-60438 Frankfurt - Germany

^[16] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 - USA

^[17] II, Texas A&M Univ, Cyclotron Inst, College Stn, TX 77843 - USA

^[18] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8 - Canada

^[19] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079 - Peoples R China

^[20] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079 - Peoples R China

^[21] Jacak, B., V, Univ Calif Berkeley, Dept Phys, Berkeley, CA 94270 - USA

^[22] Jacak, B., V, Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94270 - USA

^[23] MIT, Dept Phys, Cambridge, MA 02139 - USA

^[24] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 - USA

^[25] Wayne State Univ, Dept Comp Sci, Detroit, MI 48202 - USA

^[26] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 - USA

^[27] Akita Int Univ, Akita 0101292 - Japan

• Tipo de documento: Artigo Científico
• Fonte: Physical Review C; v. 104, n. 2 AUG 11 2021.
• Citações Web of Science: 0

Resumo

We report a new determination of (q) over cap, the jet transport coefficient of the quark-gluon plasma. We use the JETSCAPE framework, which incorporates a novel multistage theoretical approach to in-medium jet evolution and Bayesian inference for parameter extraction. The calculations, based on the MATTER and LBT jet quenching models, are compared to experimental measurements of inclusive hadron suppression in Au + Au collisions at the BNL Relativistic Heavy Ion Collider (RHIC) and Pb + Pb collisions at the CERN Large Hadron Collider (LHC). The correlation of experimental systematic uncertainties is accounted for in the parameter extraction. The functional dependence of (q) over cap on jet energy or virtuality and medium temperature is based on a perturbative picture of in-medium scattering, with components reflecting the different regimes of applicability of MATTER and LBT. In the multistage approach, the switch between MATTER and LBT is governed by a virtuality scale Q(0). Comparison of the posterior model predictions to the RHIC and LHC hadron suppression data shows reasonable agreement, with moderate tension in limited regions of phase space. The distribution of (q) over cap /T-3 extracted from the posterior distributions exhibits weak dependence on jet momentum and medium temperature T, with 90% credible region (CR) depending on the specific choice of model configuration. The choice of MATTER+LBT, with switching at virtuality Q(0), has 90% CR of 2 < <(q)over cap>/T-3 < 4 for p(T,jet) > 40 GeV/c. The value of Q(0), determined here for the first time, is in the range 2.0-2.7 GeV. (AU)

• Processo FAPESP: 18/24720-6 - Exploração do diagrama de fase da QCD
• Beneficiário: Frédérique Marie Brigitte Sylvie Grassi
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 17/05685-2 - Física hadrônica em colisões nucleares de altas energias
• Beneficiário: Jun Takahashi
• Modalidade de apoio: Auxílio à Pesquisa - Projetos Especiais
• Processo FAPESP: 16/24029-6 - A investigação da força nuclear forte sob condições extremas
• Beneficiário: Matthew William Luzum
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores