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相关论文: The radiation pattern of a QCD antenna in a dilute…

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Interferences between different emitters in the multi-parton shower is the building block of QCD jet physics in vacuum. The presence of a hot medium made of quarks and gluons is expected to alter this interference pattern. To study such…

高能物理 - 唯象学 · 物理学 2012-09-24 Néstor Armesto , Hao Ma , Mauricio Martinez , Yacine Mehtar-Tani , Carlos A. Salgado

We compute the color coherence effects for soft gluon radiation off antennas containing heavy quarks in the presence of a QCD medium - in color singlet, triplet or octet global states. This work completes the studies of antenna radiation…

高能物理 - 唯象学 · 物理学 2014-10-15 Manoel R. Calvo , Manoel R. Moldes , Carlos A. Salgado

The color coherence effects in the medium modification to the initial state radiation are studied via a simple setup which allows these effects to be pronounced. The medium-induced gluon radiation spectrum off a hard quark which suffers a…

高能物理 - 唯象学 · 物理学 2012-11-08 Néstor Armesto , Hao Ma , Mauricio Martínez , Yacine Mehtar-Tani , Carlos A. Salgado

We investigate angular and energy distributions of medium-induced gluon emission off a quark-antiquark antenna in the framework of perturbative QCD as an attempt toward understanding, from first principles, jet evolution inside the…

高能物理 - 唯象学 · 物理学 2011-04-05 Yacine Mehtar-Tani , Carlos A. Salgado , Konrad Tywoniuk

Studies of medium-induced QCD radiation usually rely on the calculation of single-gluon radiation spectrum off an energetic parton traversing an extended colored medium. Recently, the importance of interference effects between emitters in…

高能物理 - 唯象学 · 物理学 2015-05-30 Néstor Armesto , Hao Ma , Yacine Mehtar-Tani , Carlos A. Salgado , Konrad Tywoniuk

The medium-induced one-gluon radiation spectrum off a massive quark-antiquark ($q {\bar q}$) antenna traversing a colored QCD medium is calculated in this contribution. The gluon spectrum off the antenna computed at first order in the…

高能物理 - 唯象学 · 物理学 2015-05-28 Néstor Armesto , Hao Ma , Yacine Mehtar-Tani , Carlos A. Salgado , Konrad Tywoniuk

We calculate the radiation spectrum off a qq-bar pair of a fixed opening angle theta_qq-bar traversing a medium of length L. Multiple interactions with the medium are handled in the harmonic oscillator approximation, valid for soft gluon…

高能物理 - 唯象学 · 物理学 2015-06-05 Yacine Mehtar-Tani , Carlos A. Salgado , Konrad Tywoniuk

In heavy-ion collisions, an abundant production of high-energy QCD jets allows to study how these multiparticle sprays are modified as they pass through the quark-gluon plasma. In order to shed new light on this process, we compute the…

高能物理 - 唯象学 · 物理学 2015-12-24 Jorge Casalderrey-Solana , Daniel Pablos , Konrad Tywoniuk

We consider the interference pattern for the medium-induced gluon radiation produced by a color singlet quark-antiquark antenna embedded in a QCD medium with size $L$ and `jet quenching' parameter $\hat q$. Within the BDMPS-Z regime, we…

高能物理 - 唯象学 · 物理学 2015-05-28 Jorge Casalderrey-Solana , Edmond Iancu

In this contribution, the one-gluon radiation spectrum off a massive quark-antiquark ($q {\bar q}$) antenna traversing a QCD medium is calculated in the eikonal approximation. The interference between emissions from the quark and the…

高能物理 - 唯象学 · 物理学 2015-05-30 Néstor Armesto , Hao Ma , Yacine Mehtar-Tani , Carlos A. Salgado , Konrad Tywoniuk

We investigate soft gluon radiation off a quark-antiquark antenna in both color singlet and octet configurations traversing a dense medium. We demonstrate that, in both cases, multiple scatterings lead to a gradual decoherence of the…

高能物理 - 唯象学 · 物理学 2015-05-27 Y. Mehtar-Tani , C. A. Salgado , K. Tywoniuk

As a step towards understanding the in-medium evolution of a hard jet, we consider the interference pattern for the medium induced gluon radiation produced by a color singlet quark-antiquark antenna embedded in a QCD medium with size L. We…

高能物理 - 唯象学 · 物理学 2015-05-28 Jorge Casalderrey-Solana , Edmond Iancu

We study the radiation of a highly energetic partonic antenna in a colored state traversing a dense QCD medium. Resumming multiple scatterings of all involved constituents with the medium we derive the general gluon spectrum which…

高能物理 - 唯象学 · 物理学 2015-05-28 Yacine Mehtar-Tani , Konrad Tywoniuk

We revisit the calculation of the soft gluon emission probability off a colour-singlet $q\bar q$ system that evolves in a quark-gluon plasma. The $q\bar q$ antenna is created in the presence of a medium and then emits a soft gluon outside.…

高能物理 - 唯象学 · 物理学 2024-11-01 Samuel Abreu , Xoán Mayo López , Guilherme Milhano , Alba Soto-Ontoso

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…

高能物理 - 唯象学 · 物理学 2015-02-25 Liliana Apolinário , Néstor Armesto , José Guilherme Milhano , Carlos A. Salgado

We report on recent studies of the phenomenon of color decoherence in jets in QCD media. The effect is most clearly observed in the radiation pattern of a quark-antiquark antenna, created in the same quantum state, traversing a dense color…

高能物理 - 唯象学 · 物理学 2015-05-28 Yacine Mehtar-Tani , Carlos A. Salgado , Konrad Tywoniuk

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…

高能物理 - 唯象学 · 物理学 2024-06-24 Matvey V. Kuzmin , Xoán Mayo López

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…

高能物理 - 唯象学 · 物理学 2024-02-06 João Barata , Xoán Mayo López , Andrey V. Sadofyev , Carlos A. Salgado

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…

高能物理 - 唯象学 · 物理学 2012-10-03 Néstor Armesto , Hao Ma , Mauricio Martinez , Yacine Mehtar-Tani , Carlos A. Salgado

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…

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