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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

Over the past years, there has been a sustained effort to systematically enhance our understanding of medium-induced emissions occurring in the quark-gluon plasma, driven by the ultimate goal of advancing our comprehension of jet quenching…

High Energy Physics - Phenomenology · Physics 2024-11-18 Carlota Andres , Liliana Apolinário , Fabio Dominguez , Marcos Gonzalez Martinez

We introduce photon-like refraction for gluon jet in quark gluon plasma created in high energy nucleus-nucleus collisions. A quark jet goes straightly while a gluon jet is assumed to bend in the non-homogeneous medium. Combining refraction…

Nuclear Theory · Physics 2008-05-28 Hanzhong Zhang , Enke Wang

Cold nuclear matter effects in reactions with nuclei at a future electron-ion collider (EIC) lead to a modification of semi-inclusive hadron production, jet cross sections, and jet substructure when compared to the vacuum. At leading order…

High Energy Physics - Phenomenology · Physics 2018-11-21 Matthew D. Sievert , Ivan Vitev

The density of gluons produced in the central rapidity region of a heavy ion collision is poorly known. We investigate the influence of the effects of quantum coherence on the transverse momentum distribution of photons and gluons radiated…

High Energy Physics - Phenomenology · Physics 2009-10-31 B. Z. Kopeliovich , A. Schaefer , A. V. Tarasov

Comprehensive understanding of medium-induced radiative energy loss is of a paramount importance in describing observed jet quenching in heavy-ion collisions. In this work, we have calculated the medium-modified gluon splitting rates for…

High Energy Physics - Phenomenology · Physics 2021-02-18 Souvik Priyam Adhya , Carlos A. Salgado , Martin Spousta , Konrad Tywoniuk

We systematically study dijet production in various processes in the small-$x$ limit and establish an effective $k_t$-factorization for hard processes in a system with dilute probes scattering on a dense target. We find that the well-known…

High Energy Physics - Phenomenology · Physics 2011-05-13 Fabio Dominguez , Cyrille Marquet , Bo-Wen Xiao , Feng Yuan

We review recent theoretical developments in the study of the structure of jets that are produced in ultra relativistic heavy ion collisions. The core of the review focusses on the dynamics of the parton cascade that is induced by the…

High Energy Physics - Phenomenology · Physics 2015-12-09 Jean-Paul Blaizot , Yacine Mehtar-Tani

We propose a hybrid model for medium-induced parton energy loss, in which the hard scales in the process are treated perturbatively, while the soft scales which involve strong coupling dynamics are modeled by AdS/CFT calculations. After…

High Energy Physics - Phenomenology · Physics 2010-03-02 C. Marquet , T. Renk

We study the induced photon bremsstrahlung from a fast quark produced in AA-collisions due to multiple scattering in quark-gluon plasma. For RHIC and LHC conditions the induced photon spectrum is sharply peaked at photon energy close to the…

High Energy Physics - Phenomenology · Physics 2009-11-10 B. G. Zakharov

Order $\alpha_s$-corrections to the diffractive structure functions $F_L^D$ and $F_2^D$ at large $Q^2$ and small $x$ are evaluated in the semiclassical approach, where the initial proton is treated as a classical colour field. The…

High Energy Physics - Phenomenology · Physics 2009-02-20 W. Buchmuller , A. Hebecker , M. F. McDermott

Measurements of jet substructure describing the composition of quark- and gluon-initiated jets are presented. Proton-proton (pp) collision data at $\sqrt{s}$ =13 TeV collected with the CMS detector are used, corresponding to an integrated…

High Energy Physics - Experiment · Physics 2022-02-08 CMS Collaboration

We demonstrate that hard dijet production via coherent inelastic diffraction is a promising channel for probing gluon saturation at the Electron-Ion Collider. By $inelastic$ diffraction we mean a process in which the two hard jets - a…

High Energy Physics - Phenomenology · Physics 2022-06-01 E. Iancu , A. H. Mueller , D. N. Triantafyllopoulos

We study the gluon cascade generated via successive medium-induced branchings by an energetic parton propagating through a dense QCD medium. We focus on the high-energy regime where the energy $E$ of the leading particle is much larger than…

High Energy Physics - Phenomenology · Physics 2014-09-09 Leonard Fister , Edmond Iancu

This Letter presents a normalized differential cross-section measurement in a fiducial phase-space region where interference effects between top-quark pair production and associated production of a single top quark with a $W$ boson and a…

High Energy Physics - Experiment · Physics 2018-10-24 ATLAS Collaboration

With the advent of very powerful particle accelerators, such as RHIC and the LHC, it becomes possible to study QCD in high energy collisions, in which the gluon content of the proton or nucleus is probed and its density becomes often large…

High Energy Physics - Phenomenology · Physics 2017-11-13 Pieter Taels

We derive the distribution of energy and momentum transmitted from a primary fast parton and its medium-induced bremsstrahlung gluons to a thermalized quark-gluon plasma. Our calculation takes into account the important and thus far…

High Energy Physics - Phenomenology · Physics 2015-05-28 R. B. Neufeld , Ivan Vitev

In this work, we study the phenomena of quantum interference assisted magnon blockade and magnon antibunching in a weakly interacting hybrid ferromagnet-superconductor system. The magnon excitations in two yttrium iron garnet spheres are…

Quantum Physics · Physics 2023-05-16 Pooja Kumari Gupta , Sampreet Kalita , Amarendra K. Sarma

Phenomenological consequences of the infrared singular, instantaneous part of the gluon propagator in Coulomb gauge are investigated. The corresponding quark Dyson-Schwinger equation is solved, neglecting retardation and transverse gluons…

High Energy Physics - Phenomenology · Physics 2008-11-26 R. Alkofer , M. Kloker , A. Krassnigg , R. F. Wagenbrunn

We review the theoretical interpretation of deep-inelastic electron-proton scattering at low values of the Bjorken variable $x \simeq Q^2/W^2 \lsim 0.1$. The process proceeds via the interaction of quark-antiquark $(q \bar q)$ color-dipole…

High Energy Physics - Phenomenology · Physics 2012-10-03 Dieter Schildknecht