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2018

Strong- vs. weak-coupling pictures of jet quenching: a dry run using QED

Arnold, Peter, Iqbal, Shahin, Rase, Tanner

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High-energy partons ($E \gg T$) traveling through a quark-gluon plasma lose energy by splitting via bremsstrahlung and pair production.

Regardless of whether or not the quark-gluon plasma itself is strongly coupled, an important question lying at the heart of philosophically different approaches to energy loss is whether the high-energy partons of an in-medium shower can be thought of as a collection of individual particles, or whether their coupling to each other is also so strong that a description as high-energy `particles' is inappropriate.
We discuss some possible theorists' tests of this question for simple situations (e.g.
an infinite, non-expanding plasma) using thought experiments and first-principles quantum field theory calculations (with some simplifying approximations).

Strong- vs. weak-coupling pictures of jet quenching: a dry run using QED · Around

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Similar

Y. Hatta, E. Iancu and A. H. Mueller, “Jet evolution in the 𝒩 = 4 {\cal N}{=}4 SYM plasma at strong coupling,” JHEP 0805
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P. B. Arnold, S. Cantrell and W. Xiao, “Stopping distance for high energy jets in weakly-coupled quark-gluon plasmas,” Phys. Rev. D 81
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T. Liou, A. H. Mueller and B. Wu, “Radiative p ⊥ p_{\bot} -broadening of high-energy quarks and gluons in QCD matter,” Nucl. Phys. A 916
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J. P. Blaizot, E. Iancu and Y. Mehtar-Tani, “Medium-induced QCD cascade: democratic branching and wave turbulence,” Phys. Rev. Lett. 111
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Then

J. P. Blaizot and Y. Mehtar-Tani, “Energy flow along the medium-induced parton cascade,” Annals Phys. 368
Original
2016
Later among the works it cites.
M. A. Escobedo and E. Iancu, “Event-by-event fluctuations in the medium-induced jet evolution,” JHEP 1605
Original
2016
Later among the works it cites.
P. Arnold and S. Iqbal, “The LPM effect in sequential bremsstrahlung,” JHEP 04
Original
2016
Later among the works it cites.
P. Arnold, H. C. Chang and S. Iqbal, “The LPM effect in sequential bremsstrahlung: 4-gluon vertices,” JHEP 1610
Original
2016
Later among the works it cites.
J. Casalderrey-Solana, D. C. Gulhan, J. G. Milhano, D. Pablos and K. Rajagopal, “A Hybrid Strong/Weak Coupling Approach to Jet Quenching,” JHEP 1410

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Original

2014

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J. P. Blaizot and Y. Mehtar-Tani, “Renormalization of the jet-quenching parameter,” Nucl. Phys. A 929

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P. Arnold, H. C. Chang and S. Iqbal, “The LPM effect in sequential bremsstrahlung 2: factorization,” JHEP 1609

2016

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E. Iancu, P. Taels and B. Wu, “Jet quenching parameter in an expanding QCD plasma,” arXiv:1806.07177 [hep-ph]

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B. G. Zakharov, “Radiative quark p T p_{T} -broadening in a quark-gluon plasma beyond the soft gluon approximation,” arXiv:1807.09742 [hep-ph]

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2017

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Wolfram Research Inc., Mathematica, Version 11.1, Champaign, IL (2017)

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