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We propose an extension to classify jet modification in heavy-ion collisions by including the jet mass along with its energy. The mass of a jet, as measured by jet reconstruction algorithms, is constrained by the jet's virtuality, which in…

Nuclear Theory · Physics 2016-05-25 A. Majumder , J. Putschke

Comparing four different (ideal and viscous) hydrodynamic models for the evolution of the medium created in 200 AGeV Au-Au collisions, combined with two different models for the path length dependence of parton energy loss, we study the…

High Energy Physics - Phenomenology · Physics 2011-02-28 Thorsten Renk , Hannu Holopainen , Ulrich Heinz , Chun Shen

The observation of collectivity in collisions of small systems has constituted a challenge for the heavy-ion community for over a decade now. The absence of jet quenching in those systems presents an apparent contradiction to the presence…

High Energy Physics - Phenomenology · Physics 2025-10-21 Isobel Kolbé , Chiara Le Roux , Korinna Zapp

Jet quenching has been established as one of the main tools to study the properties of the medium produced in heavy ion collisions. Most of the experimental effort has been, up to now, on the measurements of inclusive particle suppression.…

High Energy Physics - Phenomenology · Physics 2016-09-06 Carlos A. Salgado

The path-length dependence of jet quenching can help to constrain different jet quenching mechanisms in heavy-ion collisions. However, measuring an explicit value for this dependence has proven challenging. Traditional approaches, which…

Nuclear Experiment · Physics 2023-08-23 Caitlin Beattie

The medium-temperature $T$ dependence of the jet transport coefficient $\hat q$ was studied via the nuclear modification factor $R_{AA}(p_{\rm T})$ and elliptical flow parameter $v_2(p_{\rm T})$ for large transverse momentum $p_{\rm T}$…

High Energy Physics - Phenomenology · Physics 2024-09-30 Man Xie , Han-Qing Fei , En-Ke Wang , Ben-Wei Zhang , Han-Zhong Zhang

The study of jet production in small collision systems is essential for testing our understanding of perturbative and non perturbative QCD and cold nuclear matter (CNM) effects. In addition, studies at high multiplicity in small collision…

Nuclear Experiment · Physics 2024-06-25 Austin Schmier

We have developed the Monte Carlo simulation program JEWEL 1.0 (Jet Evolution With Energy Loss), which interfaces a perturbative final state parton shower with medium effects occurring in ultra-relativistic heavy ion collisions. This is…

High Energy Physics - Phenomenology · Physics 2009-04-24 Korinna Zapp , Gunnar Ingelman , Johan Rathsman , Johanna Stachel , Urs Achim Wiedemann

The production of jets associated to bottom quarks is measured for the first time in PbPb collisions at a center-of-mass energy of 2.76 TeV per nucleon pair. Jet spectra are reported in the transverse momentum (pt) range of 80-250 GeV, and…

Nuclear Experiment · Physics 2014-10-01 CMS Collaboration

An improved measurement of $v_2$ for $\pi^0$ in a broad range of $p_T$ and centrality is presented. By combining $v_2$ with the $R_{AA}$, we provide new insights on jet-medium interactions. We show that current pQCD energy loss models…

Nuclear Experiment · Physics 2019-08-13 Rui Wei

We calculate the medium modification factor $I_{pA}$ for the photon-tagged jet fragmentation functions for scenario with the quark-gluon plasma formation in $pA$ and $pp$ collisions. We perform calculations of radiative and collisional…

High Energy Physics - Phenomenology · Physics 2023-07-12 B. G. Zakharov

Nuclear modification factor $R_{AA}(p_{T})$ for large transverse momentum pion spectra in $Pb+Pb$ collisions at $\sqrt{s}=2.76$ TeV is predicted within the NLO perturbative QCD parton model. Effect of jet quenching is incorporated through…

Nuclear Theory · Physics 2013-05-29 Xiao-Fang Chen , Tetsufumi Hirano , Enke Wang , Xin-Nian Wang , Hanzhong Zhang

To probe the properties of the quark-gluon plasma created in heavy-ion collisions, a very useful class of observables refers to the propagation of energetic jets. A jet is a collimated spray of particles generated via successive parton…

High Energy Physics - Phenomenology · Physics 2020-10-07 Paul Caucal

We calculate the medium modification factor $I_{pA}$ for 5.02 TeV $p$+Pb collisions. We use the Monte-Carlo Glauber model to determine the parameters of the quark-gluon plasma fireball in $pA$ jet events. Our calculations show that the jet…

High Energy Physics - Phenomenology · Physics 2024-07-03 B. G. Zakharov

Focusing on four types of correlation plots, $R_{\rm AA}$ vs. $v_2$, $R_{\rm AA}$ vs. $I_{\rm AA}$, $I_{\rm AA}$ vs. $v_2^{I_{\rm AA}}$ and $v_2$ vs.\ $v_2^{I_{\rm AA}}$, we demonstrate how the centrality dependence of \emph{correlations}…

Nuclear Theory · Physics 2013-05-29 Jiangyong Jia , W. A. Horowitz , Jinfeng Liao

The nuclear suppression factor R_AA of single inclusive hadrons measured in ultrarelativistic heavy-ion collisions was the first observable to study jet quenching, i.e. the final state interaction of hard parton showers with the surrounding…

High Energy Physics - Phenomenology · Physics 2013-08-09 Thorsten Renk

Jet substructure measurements in heavy-ion collisions provide constraints on jet quenching and the medium response in the QGP. Though there has been remarkable progress in inclusive-charged-hadron jet substructure measurements,…

Nuclear Experiment · Physics 2025-08-22 Sierra Cantway

Suppression of jet spectra or jet quenching in high-energy heavy-ion collisions is caused by jet energy loss in the dense medium. The azimuthal anisotropy of jet energy loss in non-central heavy-ion collisions can lead to jet anisotropy…

High Energy Physics - Phenomenology · Physics 2022-01-24 Yayun He , Wei Chen , Tan Luo , Shanshan Cao , Long-Gang Pang , Xin-Nian Wang

We introduce a new 'quantile' analysis strategy to study the modification of jets as they traverse through a droplet of quark-gluon plasma. To date, most jet modification studies have been based on comparing the jet properties measured in…

High Energy Physics - Phenomenology · Physics 2019-09-18 Jasmine Brewer , José Guilherme Milhano , Jesse Thaler

The striking suppression and modification patterns that are observed in jet observables measured in heavy-ion collisions with respect to the proton-proton baseline have the potential to constrain the spatio-temporal branching process of…

High Energy Physics - Phenomenology · Physics 2018-08-16 Konrad Tywoniuk , Yacine Mehtar-Tani