Nuclear modification of jet shape for inclusive jets and $γ$-jets at the LHC energies

Chang, Ning-Bo; Tachibana, Yasuki; Qin, Guang-You

doi:10.48550/arxiv.1906.09562

Cited by 9 publications

(15 citation statements)

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“…Another important aspect of jet-medium interaction is the medium response to jet propagation [27][28][29][30][31]. The lost energy and momentum from hard jets may induce medium excitations, which may affect the space-time evolution of the bulk matter and many jet-related observables [32][33][34][35][36][37][38][39][40][41][42]. For example, fast jet partons may induce Mach cone like excitation in the medium [27,29].…”

Section: Introductionmentioning

confidence: 99%

Jet shape and redistribution of the lost energy from jets in Pb+Pb collisions at the LHC in a multiphase transport model

Luo,

Mao,

Qin

et al. 2021

Preprint

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Jet-medium interaction involves two important effects: jet energy loss and medium response. The search for jet-induced medium excitations is one of the hot topics in jet quenching study in relativistic nuclear collisions. In this work, we perform a systematic study on how the lost energy from hard jets evolves with the bulk medium and redistributes in the final state of heavy-ion collisions via a multi-phase transport model. In particular, the (∆η, ∆φ) distribution of charged particles with respect to the jet axis and jet shape function are studied for various Pb+Pb collision centralities and for different transverse momentum intervals of charged particles. Our numerical result shows a strong enhancement of soft particles at large angles for Pb+Pb collisions relative to p+p collisions at the LHC, qualitatively consistent with recent CMS data. This indicates that a significant fraction of the lost energy from hard jets is carried by soft particles at large angles away from the jet axis.

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Section: Introductionmentioning

confidence: 99%

Jet shape and redistribution of the lost energy from jets in Pb+Pb collisions at the LHC in a multiphase transport model

Luo,

Mao,

Qin

et al. 2021

Preprint

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“…The study of energetic jets and hadrons and their medium modification in heavy-ion collisions provides a valuable probe of the QGP properties, such as the jet transport coefficient inside the QGP [12]. A lot of effort has been devoted to understanding the nuclear modification of jets, such as single inclusive hadron/jet suppression [12][13][14][15][16], di-hadron/jet correlations [17][18][19][20][21], photon/Z-triggered hadron/jet correlations [22][23][24][25][26][27], and more differential substructures of full jets [28][29][30][31][32]. Among various hard probes, heavy quarks are of particular interest since their flavors are conserved when interacting with QGP.…”

Section: Introductionmentioning

confidence: 99%

Heavy flavor quenching and flow: the roles of initial condition, pre-equilibrium evolution and in-medium interaction

Li,

Xing,

Liu

et al. 2020

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Within an advanced Langevin-hydrodynamics framework coupled to a hybrid fragmentationcoalescence hadronization model, we study heavy flavor quenching and flow in relativistic heavy-ion collisions. We investigate how the initial heavy quark spectrum, the energy loss and hadronization mechanisms of heavy quarks in medium, the evolution profile of pre-equilibrium stage, the flow of medium and the temperature dependence of heavy quark diffusion coefficient influence the suppression and elliptic flow of heavy mesons at RHIC and the LHC. Our result shows that different modeling of initial conditions, pre-equilibrium evolution and in-medium interaction can individually yield about 10-40% uncertainties in D meson suppression and flow at low transverse momentum. We also find that a proper combination of collisional versus radiative energy loss, coalescence versus fragmentation in hadronization, and the inclusion of medium flow are the most important factors for describing the suppression and elliptic flow of heavy mesons.

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“…The interaction between jets and medium can degrade the energy of jet partons and change the energy and momentum distributions among jet constituents. Extensive studies of various jet quenching phenomena, such as the suppression of large transverse momentum (p T ) hadrons [18][19][20][21][22][23][24] and jets [25][26][27][28][29][30][31][32][33][34], the modification of jet-related correlations [35][36][37][38][39], and the change of jet structure [40][41][42][43][44][45][46][47][48][49][50][51][52], have revealed rich information about the properties of QGP produced at the Relativistic Heavy-Ion Collider (RHIC) and the Large Hadron Collider (LHC).…”

mentioning

confidence: 99%

“…Another very important effect of jet-medium interaction is the medium response. The lost energy from jets may induce medium excitations, which may affect the dynamical evolution of bulk matter and various jet-related observables [45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64]. One of the most famous medium excitations is the Mach cone induced by supersonic partons propagating through the QGP [65][66][67][68][69][70][71][72][73].…”

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confidence: 99%

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Enhancement of baryon-to-meson ratios around jets as a signature of medium response

Luo¹,

Mao²,

Qin³

et al. 2021

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We present a unique signal of jet-induced medium excitations: the enhancement of baryon-tomeson ratios around the quenched jets. To illustrate this, we study the jet-particle correlations and the (∆η, ∆φ) distributions of jet-induced identified particles with respect to the jet direction in Pb+Pb collisions at the LHC via a multi-phase transport model. We find a strong enhancement of baryon-to-meson ratios around the triggered jets in Pb+Pb collisions relative to p+p collisions. The enhancement is more pronounced in more central collisions due to larger jet quenching effect, and is strongest at intermediate pT region as a result of the coalescence of jet-excited medium partons. Since the lost energy from jets can flow to large angles, jet-triggered baryon-to-meson ratios are more enhanced for larger relative distance ∆r from the jet axis. We argue that the experimental confirmation of the enhancement of jet-induced baryon-to-meson ratios around the jets will provide an unambiguous evidence for the medium response to jet quenching in heavy-ion collisions.

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Nuclear modification of jet shape for inclusive jets and $γ$-jets at the LHC energies

Cited by 9 publications

References 0 publications

Jet shape and redistribution of the lost energy from jets in Pb+Pb collisions at the LHC in a multiphase transport model

Jet shape and redistribution of the lost energy from jets in Pb+Pb collisions at the LHC in a multiphase transport model

Heavy flavor quenching and flow: the roles of initial condition, pre-equilibrium evolution and in-medium interaction

Enhancement of baryon-to-meson ratios around jets as a signature of medium response

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