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We revisit the medium-induced coherent radiation associated to hard and forward (small angle) scattering of an energetic parton through a nuclear medium. We consider all $1\to 1$ hard forward processes ($g \to g$, $q \to q$, $q \to g$ and…

High Energy Physics - Phenomenology · Physics 2016-01-20 Stéphane Peigné , François Arleo , Rodion Kolevatov

We calculate the spectrum of gluons sourced by the branching of an energetic quark in the presence of an inhomogeneous QCD medium, focusing on the soft radiation limit. We take into account multiple soft interactions between the partons and…

High Energy Physics - Phenomenology · Physics 2024-02-06 João Barata , Xoán Mayo López , Andrey V. Sadofyev , Carlos A. Salgado

We derive the in-medium gluon radiation spectrum off a quark within the path integral formalism at finite energies, including all next-to-eikonal corrections in the propagators of quarks and gluons. Results are computed for finite formation…

High Energy Physics - Phenomenology · Physics 2015-02-25 Liliana Apolinário , Néstor Armesto , José Guilherme Milhano , Carlos A. Salgado

High-energy proton-nucleus (pA) collisions offer valuable insight into the role of cold nuclear matter effects in hadron production. In particular, multiple rescatterings of an incoming parton by the nuclear target are known to induce the…

High Energy Physics - Phenomenology · Physics 2025-08-12 Greg Jackson , Stéphane Peigné , Kazuhiro Watanabe

We derive the medium-induced, coherent gluon radiation spectrum associated with the hard forward scattering of an energetic parton off a nucleus, in the saturation formalism and within the Gaussian approximation for the relevant correlators…

High Energy Physics - Phenomenology · Physics 2017-01-18 Stéphane Munier , Stéphane Peigné , Elena Petreska

Results are presented for the medium-induced, soft coherent radiation spectrum for all $2\to 2$ partonic channels in QCD, at leading-order in $\alpha_s$ but beyond leading logarithmic accuracy. The general formula is valid in the full…

High Energy Physics - Phenomenology · Physics 2024-06-03 Greg Jackson , Stéphane Peigné , Kazuhiro Watanabe

We study the medium-induced gluon emission from a hard quark jet traversing the dense nuclear matter within the framework of deep inelastic scattering off a large nucleus. We extend the previous work and compute the single gluon emission…

Nuclear Theory · Physics 2018-09-26 Le Zhang , De-Fu Hou , Guang-You Qin

We study the medium-induced gluon emission process experienced by a hard jet parton propagating through the dense nuclear matter in the framework of deep inelastic scattering off a large nucleus. We work beyond the collinear rescattering…

High Energy Physics - Phenomenology · Physics 2019-10-09 Le Zhang , De-Fu Hou , Guang-You Qin

Discussing the general case of a hard partonic production process, we show that the notion of parton energy loss is not always sufficient to fully address medium-induced gluon radiation. The broader notion of gluon radiation associated to a…

High Energy Physics - Phenomenology · Physics 2011-07-05 Francois Arleo , Stephane Peigne , Taklit Sami

We study the gluon radiation spectrum off a hard in-medium produced quark in the multiple soft rescattering formalism of Baier-Dokshitzer-Mueller-Peigne-Schiff, and of Zakharov (BDMPS-Z). Its dependence on the quark and gluon energy, on the…

High Energy Physics - Phenomenology · Physics 2009-10-31 Urs Achim Wiedemann

We study color coherence effects on the medium-induced soft gluon radiation off an asymptotic quark hit by a virtual photon traversing a hot and dense QCD medium. The transverse momentum spectrum of the emitted gluon is computed at 1st…

High Energy Physics - Phenomenology · Physics 2012-07-06 Néstor Armesto , Hao Ma , Mauricio Martínez , Yacine Mehtar-Tani , Carlos A. Salgado

Soft gluon radiation induced by multiple scattering of a fast quark or gluon propagating through QCD matter is discussed. After revisiting the Landau-Pomeranchuk-Migdal effect in QED we show that large formation times of bremsstrahlung…

High Energy Physics - Phenomenology · Physics 2009-10-28 R. Baier , Yu. L. Dokshitzer , S. Peigné , D. Schiff

We report on recent calculations of the medium-induced gluon radiation off hard partons. The employed path-integral formalism reduces in limiting cases to the main ``jet quenching'' results of the existing literature. Moreover, it describes…

High Energy Physics - Phenomenology · Physics 2009-11-07 Urs Achim Wiedemann

We study the evolution of an energetic jet which radiates gluons while propagating through a dense QCD medium modeled as a random distribution of color sources. Motivated by the heavy ion experimental program at the LHC, we focus on the…

High Energy Physics - Phenomenology · Physics 2015-06-11 Jean-Paul Blaizot , Fabio Dominguez , Edmond Iancu , Yacine Mehtar-Tani

We compute the spectrum of gluons emitted by a highly energetic quark inside a flowing QCD medium, focusing on the soft gluon limit at first order in the opacity expansion. Specifically, we derive the leading energy-suppressed corrections…

High Energy Physics - Phenomenology · Physics 2024-06-24 Matvey V. Kuzmin , Xoán Mayo López

The induced momentum spectrum of soft gluons radiated from a high energy quark produced in and propagating through a QCD medium is reexamined in the BDMPS formalism. A mistake in our published work (Physical Review C60 (1999) 064902) is…

High Energy Physics - Phenomenology · Physics 2009-11-07 R. Baier , Yu. L. Dokshitzer , A. H. Mueller , D. Schiff

The spectrum of coherent gluon radiation from a quark-anti-quark pair experiencing multiple scatterings within a coloured medium is central for understanding in-medium parton cascades. Despite its foundational importance, current results…

We investigate the color coherence pattern between initial and final state radiation in the presence of a QCD medium. We derive the medium-induced gluon spectrum of an "asymptotic" parton which suffers a hard scattering and subsequently…

High Energy Physics - Phenomenology · Physics 2012-10-03 Néstor Armesto , Hao Ma , Mauricio Martinez , Yacine Mehtar-Tani , Carlos A. Salgado

The new precision era of jet quenching observables at both RHIC and the LHC calls for an improved and more precise description of in-medium gluon emissions. The development of new theoretical tools and analytical calculations to tackle this…

High Energy Physics - Phenomenology · Physics 2020-07-22 Carlota Andres , Liliana Apolinário , Fabio Dominguez

We present a derivation of the medium-induced gluon radiation spectrum beyond the current limitation of soft gluon emission. Making use of the path integral approach to describe the propagation of high-energy particles inside a medium, we…

High Energy Physics - Phenomenology · Physics 2012-11-08 Liliana Apolinário , Néstor Armesto , Carlos A. Salgado
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