Jet broadening in dense inhomogeneous matter

Barata, João; Sadofyev, Andrey V.; Salgado, Carlos A.

doi:10.48550/arxiv.2202.08847

Cited by 5 publications

(11 citation statements)

References 90 publications

(184 reference statements)

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“…This is especially true for ∇f effect. Such corrections are expected to get possible logarithmic enhancements compared to the modification of the thermal mass [93]. Interestingly, we see that the anisotropy effect alters q differently in both scenarios: for ∇m g the jet suffers less broadening, while for ∇f we see a drastic increase in the diffusion coefficient.…”

Section: Momentum Broadening In Anisotropic Mediamentioning

confidence: 75%

“…We assume the medium to be homogeneous (more precisely, both g 2 µ and m g spatially constant) in the transverse plane, except in Sect. IV C when we study the effect from an anisotropic medium [87,93,94]. We perform the simulations using ideal QASM simulators from qiskit on both U(1) and SU(2) media.…”

Section: Quantum Simulations and Resultsmentioning

confidence: 99%

“…In recent times, there has been an increase interest in studying jet evolution in the presence of anisotropic backgrounds [87,93,94]. Such studies aim to provide a better understanding of how jets can be used as tomo-…”

Section: Momentum Broadening In Anisotropic Mediamentioning

confidence: 99%

“…Following the strategy used in Refs. [87,93], we allow m g to vary linearly along a direction in transverse space,…”

Section: Momentum Broadening In Anisotropic Mediamentioning

confidence: 99%

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Medium induced jet broadening in a quantum computer

Barata¹,

Du²,

Li³

et al. 2022

Preprint

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QCD jets provide one of the best avenues to extract information about the quark-gluon plasma produced in the aftermath of ultra relativistic heavy ions collisions. The structure of jets is determined by multiparticle quantum interference hard to tackle using perturbative methods. When jets evolve in a QCD medium this interference pattern is modified, adding another layer of complexity. By taking advantage of the recent developments in quantum technologies, such effects might be better understood via direct quantum simulation of jet evolution. In this work, we introduce a precursor to such simulations. Based on the light-front Hamiltonian formalism, we construct a digital quantum circuit that tracks the evolution of a single hard probe in the presence of a stochastic color background. In terms of the jet quenching parameter q, the results obtained using classical simulators of ideal quantum computers agree with known analytical results. With this study, we hope to provide a baseline for future in-medium jet physics studies using quantum computers.

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Section: Momentum Broadening In Anisotropic Mediamentioning

confidence: 75%

Section: Quantum Simulations and Resultsmentioning

confidence: 99%

Section: Momentum Broadening In Anisotropic Mediamentioning

confidence: 99%

“…Following the strategy used in Refs. [87,93], we allow m g to vary linearly along a direction in transverse space,…”

Section: Momentum Broadening In Anisotropic Mediamentioning

confidence: 99%

See 2 more Smart Citations

Medium induced jet broadening in a quantum computer

Barata¹,

Du²,

Li³

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…In order to draw a complete picture of the transverse momentum broadening in a dense QCD medium over all transverse momenta, such single logarithmic resummation should be matched with NLO results with exact kinematics [20], NLO corrections to the collision kernel [81][82][83] and a proper determination of the non-perturbative small k ⊥ domain (e.g from lattice calculations [84,85]). Regarding the phenomenological applications to heavy-ion collisions, one could also investigate the relative importance between higher order corrections and the effects of inhomogeneities in the plasma as computed in [86]…”

Section: Discussionmentioning

confidence: 99%

Universality aspects of quantum corrections to transverse momentum broadening in QCD media

Caucal¹,

Mehtar-Tani²

2022

Preprint

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We study non-linear quantum corrections to transverse momentum broadening (TMB) of a fast parton propagating in dense QCD matter in the leading logarithmic approximation. These non-local corrections yield an anomalous super-diffusive behavior characterized by a heavy tailed distribution which is associated with Lévy random walks. Using a formal analogy with the physics of traveling waves, we show that at late times the transverse momentum distribution tends to a universal scaling regime. We derive analytic solutions in terms of an asymptotic expansion around the scaling limit for both fixed and running coupling. We note that our analytic approach yields a good agreement with the exact numerical solutions down to realistic values of medium length. Finally, we discuss the interplay between system size and energy dependence of the diffusion coefficient q and its connection with the gluon distribution function that is manifest at large transverse momentum transfer.

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Medium-induced radiation with vacuum propagation in the pre-hydrodynamics phase

Andrés

Apolinário

Domínguez

et al. 2023

J. High Energ. Phys.

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The recent discovery of the potential of jet quenching observables to constrain the initial stages after a heavy-ion collision makes imperative to have a better understanding of the process of medium-induced radiation before the formation of the quark-gluon plasma (QGP) and its impact on observables at high-pT. In this work, we generalize the BDMPS-Z framework for medium-induced radiation to account for additional emissions occurring before the creation of the QGP. For simplicity, we assume that during the pre-hydrodynamics phase the hard parton propagates as in vacuum. This set-up, allows us to isolate the contribution from the additional initial radiation by comparing with the usual scenarios in which the emitter is created inside the medium but with different starting points. Using both a numerical implementation of the fully resummed emission spectrum and the usual analytical approximations, we find that replacing an initial slab of the medium by vacuum yields to a significant reduction of the emission spectrum for low radiated gluon energies, while the high-energy tails remain largely unmodified. Finally, we assess the effect of replacing the initial medium by vacuum propagation on the single-inclusive particle suppression RAA and high-pT azimuthal asymmetry v2. Our findings indicate that considering vacuum propagation prior to hydrodynamization leads to an increase in the v2, thus corroborating the importance of the treatment of jet quenching in the initial stages for the correct description of both observables.

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Jet broadening in dense inhomogeneous matter

Cited by 5 publications

References 90 publications

Medium induced jet broadening in a quantum computer

Medium induced jet broadening in a quantum computer

Universality aspects of quantum corrections to transverse momentum broadening in QCD media

Medium-induced radiation with vacuum propagation in the pre-hydrodynamics phase

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