Quantifying jet transport properties via large $$p_T$$ p T hadron production

Liu, Zhiquan; Zhang, Hanzhong; Zhang, Ben-Wei; Wang, Enke

doi:10.1140/epjc/s10052-016-3885-3

Cited by 31 publications

(28 citation statements)

References 79 publications

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“…Meanwhile, the R AA for different final-state identified hadrons have been measured, and their production suppressions as well as patterns of their yield ratios have been observed [4,5,[11][12][13][14][15][16]. It is of interest and it is a challenge to describe the cross sections of leading hadrons of different types and their yield ratios with each other in heavy-ion collisions (HIC) both at RHIC and LHC with a unified model of jet quenching, which should shed light on the flavor dependence of the parton energy loss and the intrinsic properties of the identified hadron productions in p+p and A+A reactions [17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

NLO Productions of $$\omega $$ and $$K^0_{\mathrm{S}}$$ with a global extraction of the jet transport parameter in heavy-ion collisions

Dai

Zhang

et al. 2019

Eur. Phys. J. C

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In this work, we pave the way to calculate the productions of ω and K 0 S mesons with large p T in p+p and A+A collisions both at RHIC and LHC. The fragmentation functions (FFs) of the ω meson in vacuum at nextto-leading order (NLO) are obtained by evolving the NLO DGLAP evolution equations with rescaled ω FFs at initial scale Q 2 0 = 1.5 GeV 2 from a broken SU(3) model, and the FFs of K 0 S in vacuum are taken from AKK08 parametrization directly. Within the framework of the NLO pQCD improved parton model, we arrive at good descriptions of the experimental data on ω and K 0 S in p+p both at RHIC and LHC. With the higher-twist approach, to take into account jet quenching effect by medium-modified FFs, nuclear modification factors for ω meson and K 0 S meson both at RHIC and LHC are presented with different sets of jet transport coefficientsq 0. Then we make a global extraction ofq 0 both at RHIC and LHC by confronting our model calculations with all available data on six identified mesons: π 0 , η, ρ 0 , φ, ω, and K 0 S. The minimum value of total χ 2 /d.o. f for productions of these mesons gives the best value ofq 0 = 0.5 GeV 2 /fm for Au+Au collisions with √ s NN = 200 GeV at RHIC, andq 0 = 1.2 GeV 2 /fm for Pb+Pb collisions with √ s NN = 2.76 TeV at LHC, respectively, with the QGP spacetime evolution given by the event-by-event viscous hydrodynamics model IEBE-VISHNU. With these global extracted values ofq 0 , nuclear modification factors of π 0 , η, ρ 0 , φ, ω, and K 0 S in A+A collisions are presented, and predictions of yield ratios such as ω/π 0 and K 0 S /π 0 at the highp T regime in heavy-ion collisions both at RHIC and LHC are provided.

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Section: Introductionmentioning

confidence: 99%

NLO Productions of $$\omega $$ and $$K^0_{\mathrm{S}}$$ with a global extraction of the jet transport parameter in heavy-ion collisions

Dai

Zhang

et al. 2019

Eur. Phys. J. C

Self Cite

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“…Several studies showed that lower lobe tumor motions occurred mostly in the SI direction and had larger amplitude movement than upper lobe tumors. 18,19) In addition, large tumor motion may be more closely associated with the difference between the 3D and 4D dose calculations than small motion. Therefore, the phantom simulated a tumor located in the lower lobe.…”

Section: Discussionmentioning

confidence: 99%

Development of an Advanced Deformable Phantom to Analyze Dose Differences due to Respiratory Motion

Shin¹,

Kang²,

Kim³

et al. 2017

Prog Med Phys

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“…To include the effect of an expanding medium we resorted to the model advocated in Ref. [20] tuned to describe LHC data [21]. The fast moving partons are produced in 2 → 2 parton events in p + p collisions with √ s N N = 2.76 TeV.…”

Section: Discussionmentioning

confidence: 99%

“…We work with a value µ 0 = 1.5 GeV. These parameters are tuned to describe LHC data on R AA [21]. In order to incorporate an expanding medium into the hydrodynamical description of the computation ofq we approximate the average energy loss per unit length that appears in Eqs.…”

Section: Iiiq and η/S In An Expanding Mediummentioning

confidence: 99%

Relatingq̂, η/s, andΔEin an expanding quark-gluon plasma

et al. 2016

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We use linear viscous hydrodynamics to describe the energy and momentum deposited by a fast moving parton in a quark gluon plasma. This energy-momentum is in turn used to compute the probability density for the production of soft partons by means of the Cooper-Frye formula. We use this probability density to render manifest a relation between the average transverse momentum given to the fast moving parton from the mediumq, the shear viscosity to entropy density ratio η/s and the energy lost by the fast moving parton ∆E in an expanding medium under similar conditions to those generated in nucleus-nucleus collisions at the LHC. We find thatq increases linearly with ∆E for both trigger and away side partons that have been produced throughout the medium. On the other hand, η/s is more stable with ∆E. We also study how these transport coefficients vary with the geometrical location of the hard scattering that produces the fast moving partons. The behavior ofq, with ∆E is understood as arising from the length of medium the parton traverses from the point where it is produced. However, since η/s is proportional to the ratio of the length of medium traversed by the fast parton and the average number of scatterings it experiences, it has a milder dependence on the energy it loses. This study represents a tool to obtain a direct connection between transport coefficients and the description of in-medium energy loss within a linear viscous hydrodynamical evolution of the bulk.

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Quantifying jet transport properties via large $$p_T$$ p T hadron production

Cited by 31 publications

References 79 publications

NLO Productions of $$\omega $$ and $$K^0_{\mathrm{S}}$$ with a global extraction of the jet transport parameter in heavy-ion collisions

NLO Productions of $$\omega $$ and $$K^0_{\mathrm{S}}$$ with a global extraction of the jet transport parameter in heavy-ion collisions

Development of an Advanced Deformable Phantom to Analyze Dose Differences due to Respiratory Motion

Relatingq̂, η/s, andΔEin an expanding quark-gluon plasma

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