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A deep learning based method with Convolutional Neural Network (CNN) algorithm is developed for simultaneous determination of the Elliptic Flow coefficient ($v_{2}$) and the Impact Parameter in Heavy-Ion Collisions at relativistic energies.…

高能物理 - 唯象学 · 物理学 2024-11-19 Praveen Murali , Sadhana Dash , Basanta Kumar Nandi

We employ Physics-Informed Neural Networks (PINNs) to solve the diffusion of heavy quarks within the expanding hot QCD medium generated in relativistic heavy-ion collisions. Due to the strong coupling between heavy quarks and the bulk…

核理论 · 物理学 2026-01-13 Wenhua Fan , Jiamin Liu , Huansang Yang , Baoyi Chen

We calculate diffusion and hadronization of heavy quarks in high-energy heavy-ion collisions implementing the notion of a strongly coupled quark-gluon plasma in both micro- and macroscopic components. The diffusion process is simulated…

核理论 · 物理学 2013-05-30 Min He , Rainer J. Fries , Ralf Rapp

By applying a Bayesian model-to-data analysis, we estimate the temperature and momentum dependence of the heavy quark diffusion coefficient in an improved Langevin framework. The posterior range of the diffusion coefficient is obtained by…

核理论 · 物理学 2018-01-31 Yingru Xu , Marlene Nahrgang , Shanshan Cao , Jonah E. Bernhard , Steffen A. Bass

A deep learning based method with the convolutional neural network (CNN) algorithm for determining the impact parameters is developed using the constrained molecular dynamics model simulations, focusing on the heavy-ion collisions at the…

Using a Bayesian model-to-data analysis, we estimate the temperature dependence of the heavy quark diffusion coefficients by calibrating to the experimental data of $D$-meson $R_{\mathrm{AA}}$ and $v_2$ in AuAu collisions…

核理论 · 物理学 2018-03-14 Yingru Xu , Marlene Nahrgang , Jonah E. Bernhard , Shanshan Cao , Steffen A. Bass

We perform the first simultaneous Bayesian inference of the temperature-dependent heavy-quark spatial diffusion coefficient $2\pi T\mathcal{D}_s$ and the scaled jet transport coefficient $\hat{q}/T^3$ in the quark-gluon plasma, utilizing…

核理论 · 物理学 2026-04-17 Xu-Fei Xue , Zi-Xuan Xu , Wei Dai , Jiaxing Zhao , Ben-Wei Zhang

The deep learning technique has been applied for the first time to investigate the possibility of centrality determination in terms of the number of participants ($N_{\mathrm{part}}$) in high-energy heavy-ion collisions. For this purpose,…

高能物理 - 唯象学 · 物理学 2023-08-16 Dipankar Basak , Kalyan Dey

The momentum diffusion coefficient for heavy quarks is studied in a deconfined gluon plasma in the static approximation by investigating a correlation function of the color electric field using Monte Carlo techniques. The diffusion…

高能物理 - 格点 · 物理学 2013-05-30 Debasish Banerjee , Saumen Datta , Rajiv Gavai , Pushan Majumdar

Heavy quark production provides a unique probe of the quark-gluon plasma transport properties in heavy ion collisions. Experimental observables like the nuclear modification factor $R_{\rm AA}$ and elliptic anisotropy $v_{2}$ of heavy…

高能物理 - 唯象学 · 物理学 2020-07-28 Shuang Li , Jinfeng Liao

We discuss resonance recombination for quarks and show that it is compatible with quark and hadron distributions in local thermal equilibrium. We then calculate realistic heavy quark phase space distributions in heavy ion collisions using…

核理论 · 物理学 2015-05-30 Rainer J. Fries , Min He , Ralf Rapp

By utilizing a soft-hard factorized model, which combines a thermal perturbative description of soft scatterings and a perturbative QCD-based calculation for hard collisions, we study the energy and temperature dependence of the heavy quark…

高能物理 - 唯象学 · 物理学 2021-06-24 Shuang Li , Fei Sun , Wei Xie , Wei Xiong

Using event-by-event fluctuations, we study the diffusion parameters of net-charge, net-pion, net-kaon, and net-proton in the heavy-ion jet interaction generator (HIJING), and ultra-relativistic quantum molecular dynamics (UrQMD) models at…

核理论 · 物理学 2020-09-18 Vivek Kumar Singh , D. K. Mishra , Zubayer Ahammed

Sophisticated machine learning techniques have promising potential in search for physics beyond Standard Model in Large Hadron Collider (LHC). Convolutional neural networks (CNN) can provide powerful tools for differentiating between…

高能物理 - 唯象学 · 物理学 2019-12-17 Biplob Bhattacherjee , Swagata Mukherjee , Rhitaja Sengupta

We have implemented a Langevin approach for the transport of heavy quarks in the UrQMD hybrid model. The UrQMD hybrid approach provides a realistic description of the background medium for the evolution of relativistic heavy ion collisions.…

高能物理 - 唯象学 · 物理学 2016-01-13 Thomas Lang , Hendrik van Hees , Jan Steinheimer , Marcus Bleicher

We compute the heavy quark momentum diffusion coefficient $\kappa$ using QCD kinetic theory for a system going through bottom-up isotropization in the initial stages of a heavy ion collision. We find that the values of $\kappa$ are within…

高能物理 - 唯象学 · 物理学 2024-02-08 Kirill Boguslavski , Aleksi Kurkela , Tuomas Lappi , Florian Lindenbauer , Jarkko Peuron

Machine Learning (ML) techniques have been employed for the high energy physics (HEP) community since the early 80s to deal with a broad spectrum of problems. This work explores the prospects of using Deep Learning techniques to estimate…

高能物理 - 唯象学 · 物理学 2022-06-22 Neelkamal Mallick , Suraj Prasad , Aditya Nath Mishra , Raghunath Sahoo , Gergely Gábor Barnaföldi

Jet interactions in a hot QCD medium created in heavy-ion collisions are conventionally assessed by measuring the modification of the distributions of jet observables with respect to the proton-proton baseline. However, the steeply falling…

高能物理 - 唯象学 · 物理学 2021-04-01 Yi-Lun Du , Daniel Pablos , Konrad Tywoniuk

We investigate the thermalization of charm quarks in high energy heavy ion collisions. To this end, we calculate the diffusion coefficient in the perturbative Quark Gluon Plasma and relate it to collisional energy loss and momentum…

高能物理 - 唯象学 · 物理学 2009-11-10 Guy D. Moore , Derek Teaney

We describe a method to obtain point and dispersion estimates for the energies of jets arising from b quarks produced in proton-proton collisions at an energy of $\sqrt{s} =$ 13 TeV at the CERN LHC. The algorithm is trained on a large…

数据分析、统计与概率 · 物理学 2020-11-09 CMS Collaboration
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