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We employ a relativistic transport theory to describe the fireball expansion of the matter created in ultra-relativistic heavy-ion collisions (uRHICs). Developing an approach to fix locally the shear viscosity to entropy density $\eta/s$,…

Nuclear Theory · Physics 2013-04-25 S. Plumari , V. Greco , L. P. Csernai

We demonstrate that a Quark-Gluon Plasma (QGP) with a dilute admixture of heavy quarks has, in general, a lower speed of sound than a "pure" QGP without effects from heavy flavors. The change in the speed of sound is sensitive to the…

Nuclear Theory · Physics 2014-11-20 Giorgio Torrieri , Jorge Noronha

The distribution of transverse energy, $E_T$, which accompanies deep-inelastic electron-proton scattering at small $x$, is predicted in the central region away from the current jet and proton remnants. We use BFKL dynamics, which arises…

High Energy Physics - Phenomenology · Physics 2009-09-25 J. Kwiecinski , A. D. Martin , P. J. Sutton , K. Golec-Biernat

Test-time adaptation (TTA) aims to improve model generalizability when test data diverges from training distribution, offering the distinct advantage of not requiring access to training data and processes, especially valuable in the context…

Machine Learning · Computer Science 2024-02-28 Yige Yuan , Bingbing Xu , Liang Hou , Fei Sun , Huawei Shen , Xueqi Cheng

We use a hybrid model which relies on QCD effective kinetic theory -- K\oMP\oST -- to dynamically bridge the gap between IP-Glasma initial states and viscous hydrodynamics, for the theoretical interpretation of heavy-ion collision results.…

High Energy Physics - Phenomenology · Physics 2021-02-03 Charles Gale , Jean-François Paquet , Björn Schenke , Chun Shen

We use the Kovchegov-Levin equation to resum contributions of large invariant mass diffractive final states to diffractive structure functions in the dipole picture of deep inelastic scattering. For protons we use a (modified)…

High Energy Physics - Phenomenology · Physics 2023-08-01 Tuomas Lappi , Anh Dung Le , Heikki Mäntysaari

We introduce the $p_T$-differential radial flow $v_0(p_T)$ in the heavy-quark sector. Within an event-by-event Langevin framework, we show that this observable exhibits a strong sensitivity to the heavy quark-bulk interaction. It provides a…

High Energy Physics - Phenomenology · Physics 2025-10-23 Maria Lucia Sambataro , Salvatore Plumari , Santosh K. Das , Vincenzo Greco

Gamma-ray bursts (GRBs) are challenging to identify due to their transient nature, complex temporal profiles, and limited observational datasets. We address this with a one-dimensional convolutional neural network integrated with an…

We use effective kinetic theory to study the pre-equilibrium dynamics in heavy-ion collisions. We describe the evolution of linearized energy perturbations on top of out-of-equilibrium background to the energy-momentum tensor at a time when…

We study the thermal dilepton and photon production from relativistic heavy ion collisions in presence of viscosities by employing the recently developed second order dissipative hydrodynamic formulation estimated within a quasiparticle…

Nuclear Theory · Physics 2022-12-16 Lakshmi J. Naik , V. Sreekanth

We introduce a new approach to modeling transition distribution amplitudes (TDAs) for the processes $e p \to e n \pi^+$ and $e p \to e p \pi^0$. The modeling is flexible, constrained by sparsely available experimental data, and satisfies…

High Energy Physics - Phenomenology · Physics 2025-09-03 B. Pire , K. Semenov-Tian-Shansky , P. Sznajder , L. Szymanowski

We present the results for the evolution of transverse momentum spectra for the jetty and underlying parts of events as a function of multiplicity in pp collisions at 13 TeV measured at midrapidity ($\left|\eta\right|<0.8$) using PYTHIA8…

High Energy Physics - Phenomenology · Physics 2020-02-26 Aditya Nath Mishra , Guy Paić

The idea that the parton system created in relativistic heavy-ion collisions (i) emerges in a state with transverse momenta close to thermodynamic equilibrium and (ii) its evolution at early times is dominated by the 2-dimensional…

Nuclear Theory · Physics 2008-11-26 A. Bialas , M. Chojnacki , W. Florkowski

The transverse momentum-differential radial flow observable $v_0(p_\mathrm{T})$, recently proposed and measured by the ATLAS and ALICE collaborations, provides a novel tool to probe radial expansion dynamics in high-energy heavy-ion…

Nuclear Experiment · Physics 2025-05-27 Swati Saha , Ranbir Singh , Bedangadas Mohanty

Nuclear collisions at high energies produce a gluon field that can be described using the Colour Glass Condensate (CGC) effective theory at proper times $\tau \lesssim 1$ fm/c. The theory can be used to calculate the gluon energy-momentum…

High Energy Physics - Phenomenology · Physics 2022-02-09 Margaret E. Carrington , Alina Czajka , Stanislaw Mrowczynski

In this paper, we derive a new chemotaxis model with degenerate diffusion and density-dependent chemotactic sensitivity, and we provide a more realistic description of cell migration process for its early and late stages. Different from the…

Analysis of PDEs · Mathematics 2023-07-19 Tianyuan Xu , Shanming Ji , Chunhua Jin , Ming Mei , Jingxue Yin

Temperature programmed desorption (TPD) is a well-known technique to study gas-surface processes, and it is characterized by two main quantities: the adsorbate binding energy and the pre-exponential factor. While the former has been well…

Astrophysics of Galaxies · Physics 2025-08-06 S. Pantaleone , L. Tinacci , V. Bariosco , A. Rimola , C. Ceccarelli , P. Ugliengo

We present new synthetic models of the TP-AGB evolution. They are computed for 7 values of initial metal content (Z from 0.0001 to 0.03) and for initial masses between 0.5 and 5.0 Msun, thus extending the low- and intermediate-mass tracks…

Astrophysics · Physics 2008-11-26 Paola Marigo , Leo Girardi

We present an ab-initio approach to compute the longitudinal dependence of the initial state in heavy-ion collisions by including small-x evolution of the nuclear gluon distributions. Extending the IP-Glasma model by including JIMWLK…

High Energy Physics - Phenomenology · Physics 2018-03-14 Björn Schenke , Sören Schlichting

Weak gravitational lensing on a cosmological scales can provide strong constraints both on the nature of dark matter and the dark energy equation of state. Most current weak lensing studies are restricted to (two-dimensional) projections,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Dipak Munshi , Alan Heavens , Peter Coles