Diffusion of charm quarks in jets in high-energy heavy-ion collisions

Wang, Sa; Dai, Wei; Zhang, Ben-Wei; Wang, Enke

doi:10.1140/epjc/s10052-019-7312-4

Cited by 26 publications

(26 citation statements)

References 111 publications

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“…2. However this kind of modification to a narrower radial profile is in contrast to the towards broader medium modification pattern of D meson radial profile in jets predicted and measured in [54,61]. It is not intuitional to picture the charm quarks shift towards lager radii while bottom quarks shift close to the jet axis due to an identical in-medium parton interaction mechanism without a further investigation.…”

Section: Medium Modification Of Radial Profile Of Bottom Quarks In Jets In Pb+pb Collisionscontrasting

confidence: 60%

“…2, we predict the B meson radial distribution in jets both in central 0 − 10% Pb+Pb collisions at √ s NN = 5.02 TeV compared to its p+p baseline. Both in p+p and Pb+Pb collisions, the selected jets are required to have p jet T > 60 GeV and be tagged by at least one B meson with 4 < p Q T < 20 GeV, which is the same as our previous study [61] and the CMS measurements [54] on the case of D mesons in jets. In the top plots in Fig.…”

Section: Medium Modification Of Radial Profile Of Bottom Quarks In Jets In Pb+pb Collisionsmentioning

confidence: 99%

“…Among them, the nuclear modification factor R pA [55,56] and R AA [52] of heavy flavor jet offer strong tools for quantifying the cold nuclear matter (CNM) effects in initial-state and the in-medium quenching effects in the subsequent formed QGP [57][58][59][60][61]. Especially, the recent reported radial distributions of charm meson in jets by CMS collaboration provide an interesting opportunity to investigate the diffusions effects of heavy quarks as well as the modified substructure of heavy flavor jets in nucleus-nucleus collisions from a new angle [54], and the detailed discussion for c-jet has been presented in our previous work [61]. Since bottom quarks have larger mass than charm quark (m b ∼ 4.5 GeV, m c ∼ 1.5 GeV), the radial profile of bottom quarks in jets can be new signal to gain insight into the in-medium partonic interaction and the mass effects.…”

Section: Introductionmentioning

confidence: 99%

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Radial profile of bottom quarks in jets in high-energy nuclear collisions *

et al. 2021

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Angular correlations between heavy quark (HQ) and its tagged jet are potentially new tools to gain insight into the in-medium partonic interactions in relativistic heavy-ion collisions. In this work, we present the first theoretical study on the radial profiles of B mesons in jets in Pb+Pb collisions at the LHC. The initial production of bottom quark tagged jet in p+p is computed by SHERPA which matches the next-to-leading order matrix elements with contributions of parton shower, whereas the massive quark traversing the QGP described by a Monte Carlo model SHELL which can simultaneously simulate light and heavy flavor in-medium energy loss within the framework of Langevin evolution. In p+p collisions, we find that at lower p Q T the radial profiles of heavy flavors in jets are sensitive to the heavy quark mass. In 0 − 10% Pb+Pb collisions at √ sNN = 5.02 TeV, we observe an inverse modification pattern of the B mesons radial profiles in jets at 4 < p Q T < 20 GeV compared to that of D mesons: the jet quenching effects narrow the jet radial profile of B mesons in jets while broaden that of D mesons in jets. We find that in A+A collisions, the contribution dissipated from the higher p Q T > 20 GeV region naturally has a narrower initial distribution and consequently leads to a narrower modification pattern of radial profile; however the diffusion nature of the heavy flavor in-medium interactions will give rise to a broader modification pattern of radial profile. These two effects consequently compete and offset with each other, and the b quarks in jets benefit more from the former and suffers less diffusion effect compared to that of c quarks in jets. These findings can be tested in the future experimental measurements at the LHC to gain better understanding of the mass effect of jet quenching.

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Section: Medium Modification Of Radial Profile Of Bottom Quarks In Jets In Pb+pb Collisionscontrasting

confidence: 60%

Section: Medium Modification Of Radial Profile Of Bottom Quarks In Jets In Pb+pb Collisionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Radial profile of bottom quarks in jets in high-energy nuclear collisions *

et al. 2021

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“…The data suggest a widening of D 0 -jet angular correlation for a lower D-meson momentum range 4 < p T < 20 GeV in Pb-Pb compared to p-p due to medium effects; while the distributions for high-p T D mesons are consistent in nuclear and proton-proton collisions. This observable has been studied in another transport-based model [11]. Our calculation, however, predicts an angular distribution in Pb-Pb that is narrower than expected (using references generated by Pythia8) for both low-p T and high-p T D meson selections.…”

Section: D-jetsmentioning

confidence: 55%

Study of heavy-flavor jets in a transport approach

Ke¹,

Wang²,

Fan³

et al. 2020

Preprint

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Measurements at the RHIC and the LHC have observed flavor dependence of single-hadron suppression, which reveal the role played by quark masses in the parton interactions with the quark-gluon plasma (QGP) medium. In this study, we explore the manifestation of quark mass effect and flavor dependence in jet observables. We approach this study using the LIDO transport model. Both elastic and medium-induced radiative processes are implemented for hard parton evolution in the medium. To guarantee energy-momentum conservation in the model for the study of full jet observables, we also include a component that mimics the energy-momentum transported by medium excitation. We first predict the heavy-jet (B-jet, D-jet) and inclusive-jet nuclear modification factor R AA in central nuclear collisions at both the RHIC and the LHC beam energies. We observe a flavor-dependent jet suppression as a function of jet transverse momentum, which can be tested by future precision measurements of heavy jets. We further investigate a novel observable that considers the angular correlation between two hard objects: a D-meson and a jet, which provides model constraints in addition to those imposed by inclusive measurements.

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“…Study of heavy-flavor jets in a transport approach Weiyao Ke for a lower D-meson momentum range 4 < < 20 GeV in Pb-Pb compared to p-p due to medium effects; while the distributions for high-D mesons are consistent in nuclear and proton-proton collisions. This observable has been studied in another transport-based model [11]. Our calculation, however, predicts an angular distribution in Pb-Pb that is narrower than expected (using references generated by Pythia8) for both low-and high-D meson selections.…”

Section: Pos(hardprobes2020)060mentioning

confidence: 55%

Study of heavy-flavor jets in a transport approach

Ke¹,

Wang²,

Fan³

et al. 2021

Proceedings of 10th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions — PoS(HardPro

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Measurements at the RHIC and the LHC have observed flavor dependence of single-hadron suppression, which reveal the role played by quark masses in the parton interactions with the quark-gluon plasma (QGP) medium. In this study, we explore the manifestation of quark mass effect and flavor dependence in jet observables. We approach this study using the LIDO transport model. Both elastic and medium-induced radiative processes are implemented for hard parton evolution in the medium. To guarantee energy-momentum conservation in the model for the study of full jet observables, we also include a component that mimics the energy-momentum transported by medium excitation. We first predict the heavy-jet (B-jet, D-jet) and inclusive-jet nuclear modification factor in central nuclear collisions at both the RHIC and the LHC beam energies. We observe a flavor-dependent jet suppression as a function of jet transverse momentum, which can be tested by future precision measurements of heavy jets. We further investigate a novel observable that considers the angular correlation between two hard objects: a D-meson and a jet, which provides model constraints in addition to those imposed by inclusive measurements.

show abstract

Diffusion of charm quarks in jets in high-energy heavy-ion collisions

Cited by 26 publications

References 111 publications

Radial profile of bottom quarks in jets in high-energy nuclear collisions *

Radial profile of bottom quarks in jets in high-energy nuclear collisions *

Study of heavy-flavor jets in a transport approach

Study of heavy-flavor jets in a transport approach

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