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Related papers: Energy loss predicts no $v_2$ in small systems

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For the past ten years $R_{AA}(p_T)$, the nuclear modification factor that encodes the suppression of high $p_T$ particles due to energy loss within the medium was fairly well described by many theoretical models. However, the same models…

Nuclear Theory · Physics 2016-09-21 Jacquelyn Noronha-Hostler

We present an energy loss model which includes small system size corrections to both the radiative and elastic energy loss. Our model is used to compute the nuclear modification factor $R_{AB}$ of light and heavy flavor hadrons, averaged…

Nuclear Theory · Physics 2025-05-13 Coleridge Faraday , W. A. Horowitz

We present suppression predictions from our pQCD-based energy loss model, which receives small system size corrections, for high-$p_T$ $\pi$, $D$ and $B$ meson $R_{AB}$ as a function of centrality, flavor, $\sqrt{s_{NN}}$, and $p_T$ from…

High Energy Physics - Phenomenology · Physics 2025-11-11 Coleridge Faraday , W. A. Horowitz

In this paper heavy quark energy loss models are embedded in full event-by-event viscous hydrodynamic simulations to investigate the nuclear suppression factor and azimuthal anisotropy of D$^0$ mesons in PbPb collisions at 5.02 TeV in the…

In this proceedings I briefly review the recent progress achieved on the calculation of $v_n$ at high $p_T$ via the coupling of a jet energy loss model with full event-by-event viscous hydrodynamics. It is shown that that this framework can…

Nuclear Theory · Physics 2017-05-24 Jorge Noronha

Parton energy loss inside a dense medium leads to the suppression of large $p_T$ hadrons and can also cause azimuthal anisotropy of hadron spectra at large transverse momentum in non-central high-energy heavy-ion collisions. Such azimuthal…

Nuclear Theory · Physics 2014-11-18 Xin-Nian Wang

The elliptic azimuthal anisotropy coefficient ($v_{2}$) of the identified particles at midrapidity ($|\eta|<0.8$) was investigated in p--Pb collisions at $\sqrt{s_\mathrm{NN}}=$ 5.02 TeV using a multi-phase transport model (AMPT). The…

High Energy Physics - Phenomenology · Physics 2024-04-01 Siyu Tang , Liang Zheng , Xiaoming Zhang , Renzhuo Wan

A hybrid model that employs the hadron-string transport model UrQMD and the (3+1)D relativistic viscous hydrodynamic code vHLLE, is used to investigate the beam energy dependence of the correlation coefficient $\rho(v^{2}_{2},[p_{T}])$…

Nuclear Theory · Physics 2022-04-20 Niseem Magdy , Petr Parfenov , Arkadiy Taranenko , Iurii Karpenko , Roy A. Lacey

Recent analyses of small collision systems, namely $p+p$ and $p+$Pb at the LHC and $p+$Au, $d+$Au and $^{3}$He+Au at RHIC, have revealed azimuthal momentum anisotropies commonly associated with collective flow in larger systems. Viscous…

Nuclear Theory · Physics 2016-05-04 J. D. Orjuela Koop , R. Belmont , P. Yin , J. L. Nagle

The correlation between the event mean-transverse momentum $[p_{\mathrm{T}}]$, and the anisotropic flow magnitude $v_n$, $\rho(v^{2}_{n},[p_{T}])$, has been argued to be sensitive to the initial conditions in heavy-ion collisions. We use…

Nuclear Theory · Physics 2021-09-15 Niseem Magdy , Roy A. Lacey

We present suppression results for high-$p_T$ $D$ and $\pi$ mesons produced in $p / d + A$ and $A+A$ collisions at RHIC and LHC. These results are computed using a convolved elastic and radiative energy loss model, which receives small…

Nuclear Theory · Physics 2024-09-24 Coleridge Faraday , W. A. Horowitz

We present a perturbative-quantum-chromodynamics-based energy loss model with small system size corrections to both radiative and elastic energy loss, incorporating realistic collision geometry, production spectra, and fragmentation. We use…

High Energy Physics - Phenomenology · Physics 2025-06-04 Coleridge Faraday

High $p_T > 10$ GeV elliptic flow, which is experimentally measured via the correlation between soft and hard hadrons, receives competing contributions from event-by-event fluctuations of the low $p_T$ elliptic flow and event plane angle…

Nuclear Theory · Physics 2016-06-29 Jacquelyn Noronha-Hostler , Barbara Betz , Jorge Noronha , Miklos Gyulassy

To date, holographic calculations in strongly coupled plasma have provided separate descriptions for the rates of energy loss either for ultrarelativistic massless quarks and gluons or for infinitely massive quarks, with the latter…

High Energy Physics - Phenomenology · Physics 2025-05-05 Jean F. Du Plessis , Daniel Pablos , Krishna Rajagopal

The observation of large azimuthal anisotropy or $v_2$ for hadrons above $p_T>5$ GeV/$c$ in Au+Au collisions at $\sqrt{s_{\rm nn}}=200$ GeV has been a longstanding challenge for jet quenching models based on perturbative QCD (pQCD). Using a…

Nuclear Theory · Physics 2014-11-20 Jiangyong Jia , Rui Wei

We present leading hadron suppression predictions in $Pb+Pb$ and $p+Pb$ collisions from a convolved radiative and collisional energy loss model in which partons propagate through a realistic background, and in which the radiative energy…

Nuclear Theory · Physics 2023-07-18 Coleridge Faraday , W. A. Horowitz

The transverse momentum ($p_{\rm T}$) and centrality dependence of the azimuthal anisotropy ($v_{2}$) are measured for charged hadrons in different energies and collision species by the PHENIX experiment at RHIC. We find that $v_{2}$…

Nuclear Experiment · Physics 2019-08-13 Maya Shimomura

We present perturbative quantum chromodynamics (pQCD) predictions for the modification to the yield of high-momentum particles in very light ion collisions - ${}^{10}\mathrm{B} + {}^{10}\mathrm{B}$, ${}^{6}\mathrm{Li} + {}^{6}\mathrm{Li}$,…

High Energy Physics - Phenomenology · Physics 2025-12-22 Coleridge Faraday , Ben Bert , Jack Brand , Werner Vogelsang , W. A. Horowitz

Despite the 300% systematic theoretical uncertainty associated with extracting qhat using current energy loss models due to the collinear approximation, and despite the uncertainties in the initial geometry and corrections due to the…

High Energy Physics - Phenomenology · Physics 2011-08-19 W. A. Horowitz

We present a new plot for representing RAA data that emphasizes the strong correlation between high-pt suppression and its elliptic anisotropy. We demonstrate that existing models cannot reproduce the centrality dependence of this…

Nuclear Theory · Physics 2009-11-11 W. A. Horowitz
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