Splitting rates in QCD plasmas from a nonperturbative determination of the momentum broadening kernel 
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Schlichting, Sören; Soudi, Ismail

doi:10.1103/physrevd.105.076002

Cited by 16 publications

(7 citation statements)

References 53 publications

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“…Medium-induced splitting rates were then computed using the new NP kernel and compared to NLO and LO rates. Importantly, significant differences were observed between the NP and LO results [19].…”

Section: Radiative Energy Loss and The Brickmentioning

confidence: 84%

“…Those elaborate hybrid approaches model the background against which the tomographic signals evolve, and whose properties they probe. Precisely because QGP studies are maturing, this work focuses on one specific element of this chain: it aims to focus on the finite temperature jet-medium interaction as calculated within the Arnold-Moore-Yaffe (AMY) framework, and to explore quantitatively the empirical consequences of a recent extension of its partonic scattering kernel beyond the perturbative treatment [18,19].…”

Section: Introductionmentioning

confidence: 99%

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Leading order, next-to-leading order, and non-perturbative parton collision kernels: effects in static and evolving media

Yazdi,

Shi,

Gale

et al. 2022

Preprint

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Energetic partons traveling in a strongly interacting medium lose energy by emitting radiation and through collisions with medium constituents. Non-perturbative, next-to-leading order and leading order collision kernels are implemented within AMY-McGill formalism. The resulting gluon emission rates are then evaluated and compared by considering scattering occurring in a brick of quark-gluon plasma, as well as in a realistic simulation of Pb + Pb collisions at √ s = 2.76 ATeV using martini.We find that the variations in quenching of hard partons resulting from using different kernels can be important, depending on the overall value of the strong coupling constant αs.

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Section: Radiative Energy Loss and The Brickmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Leading order, next-to-leading order, and non-perturbative parton collision kernels: effects in static and evolving media

Yazdi,

Shi,

Gale

et al. 2022

Preprint

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“…The LO perturbative line comes from [24,25], the NLO includes the O(g) corrections from [15] following [26]. Figure taken from [19].…”

Section: Medium-induced Emission (Mie)mentioning

confidence: 99%

“…As C is determined from Wilson lines at space-like separations, the large-distance contribution b 1/gT can be determined non-perturbatively using the dimensionallyreduced theory on the lattice, [16,17]. At shorter distance one can use pQCD and merge the two [18][19][20]. 1 The resulting kernel is shown in Fig.…”

Section: Transverse Momentum Broadeningmentioning

confidence: 99%

“…1 The resulting kernel is shown in Fig. 2 from [19]: a transition from 1/q 4 ⊥ Coulomb in the UV into a non-perturbative 1/q 3 ⊥ behaviour in the IR takes place, providing the bare minimum of "screening" to make q, the second moment of the kernel, IR finite. In the q ⊥ ∼ gT range the non-perturbative curve differs appreciably from either the LO or NLO curves.…”

Section: Transverse Momentum Broadeningmentioning

confidence: 99%

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Transport properties of the QCD medium

Ghiglieri¹

2022

Preprint

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I present an overview of recent developments in the microscopic description of the quark-gluon plasma. I will concentrate on medium-induced emission and transverse momentum broadening. These are two key ingredients of the theory of jet modifications in the QCD medium and of the kinetic theory used for transport and thermalisation. The main focus is on progress towards a better understanding of theory and of its uncertainties.

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The medium-modified $$ g\to c\overline{c} $$ splitting function in the BDMPS-Z formalism

Attems

Brewer

Innocenti

et al. 2023

J. High Energ. Phys.

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The formalism of Baier-Dokshitzer-Mueller-Peigné-Schiff and Zakharov determines the modifications of parton splittings in the QCD plasma that arise from medium-induced gluon radiation. Here, we study medium-modifications of the gluon splitting into a quark-anti-quark pair in this BDMPS-Z formalism. We derive a compact path-integral formulation that resums effects from an arbitrary number of interactions with the medium to leading order in the $$ 1/{N}_c^2 $$ 1 / N c 2 expansion. Analyses in the N = 1 opacity and the saddle point approximations reveal two phenomena: a medium-induced momentum broadening of the relative quark-anti-quark pair momentum that increases the invariant mass of quark-anti-quark pairs, and a medium-enhanced production of such pairs. We note that both effects are numerically sizeable if the average momentum transfer from the medium is comparable to the quark mass. In ultra-relativistic heavy-ion collisions, this condition is satisfied for charm quarks. We therefore focus our numerical analysis on the medium modification of $$ g\to c\overline{c} $$ g → c c ¯ , although our derivation applies equally well to $$ g\to b\overline{b} $$ g → b b ¯ and to gluons splitting into light-flavoured quark-anti-quark pairs.

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Splitting rates in QCD plasmas from a nonperturbative determination of the momentum broadening kernel C(q⊥)

Cited by 16 publications

References 53 publications

Leading order, next-to-leading order, and non-perturbative parton collision kernels: effects in static and evolving media

Leading order, next-to-leading order, and non-perturbative parton collision kernels: effects in static and evolving media

Transport properties of the QCD medium

The medium-modified $$ g\to c\overline{c} $$ splitting function in the BDMPS-Z formalism

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