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We investigate the emission of circularly polarized photons from a magnetized quark-gluon plasma with nonzero quark-number and chiral charge chemical potentials. These chemical potentials qualitatively influence the differential emission…

High Energy Physics - Phenomenology · Physics 2024-12-06 Xinyang Wang , Igor A. Shovkovy

By making use of an explicit representation for the imaginary part of the photon polarization tensor in terms of transitions between the Landau levels of light quarks, we study the angular dependence of direct photon emission from a…

High Energy Physics - Phenomenology · Physics 2020-10-20 Xinyang Wang , Igor A. Shovkovy , Lang Yu , Mei Huang

We derive a general expression for the absorptive part of the one-loop photon polarization tensor in a strongly magnetized quark-gluon plasma at nonzero baryon chemical potential. To demonstrate the application of the main result in the…

Nuclear Theory · Physics 2021-10-19 Xinyang Wang , Igor Shovkovy

We consider the radiation of photons from quarks scattering on color-magnetic monopoles in the Quark-Gluon Plasma. We consider a temperature regime $T\gsim2T_c$, where monopoles can be considered as static, rare objects embedded into matter…

High Energy Physics - Phenomenology · Physics 2010-02-03 Michael Lublinsky , Claudia Ratti , Edward Shuryak

We present the elliptic flow $v_2$ of pions produced from resonance decays. The transverse momentum $p_T$ spectra of the parent particles are taken from thermal model fits and their $v_2$ are fit under the assumption that they follow…

Nuclear Theory · Physics 2009-11-10 X. Dong , S. Esumi , P. Sorensen , N. Xu , Z. Xu

We calculate transverse momentum distribution of direct photons from various sources by taking into account the initial state momentum anisotropy of {\em Quark-Gluon-Plasma} (QGP) and late stage transverse flow effects. The total photon…

High Energy Physics - Phenomenology · Physics 2009-05-29 Lusaka Bhattacharya , Pradip Roy

The azimuthal variation of jet yields in heavy-ion collisions provides information about the path-length dependence of the energy loss experienced by partons passing through the hot, dense nuclear matter known as the quark-gluon plasma.…

Nuclear Experiment · Physics 2022-10-25 ATLAS Collaboration

By weakly gauging one of the U(1) subgroups of the R-symmetry group, N=4 super-Yang-Mills theory can be coupled to electromagnetism, thus allowing a computation of photon production and related phenomena in a QCD-like non-Abelian plasma at…

High Energy Physics - Theory · Physics 2009-11-11 Simon Caron-Huot , Pavel Kovtun , Guy Moore , Andrei Starinets , Laurence G. Yaffe

Dileptons, as an electromagnetic probe, are crucial to study the properties of a Quark-Gluon Plasma (QGP) created in heavy ion collisions. We calculated the invariant mass spectra and the anisotropic emission of thermal dielectrons from…

High Energy Physics - Phenomenology · Physics 2016-01-12 Sheng-Xu Liu , Fu-Ming Liu , Klaus Werner , Meng Yue

The quark-gluon plasma (QGP) is a high temperature state of matter produced in the collisions of two nuclei at relativistic energies. The properties of this matter at short distance scales are probed using jets with high transverse momentum…

High Energy Physics - Phenomenology · Physics 2024-02-07 Abraham Holtermann , Jacquelyn Noronha-Hostler , Anne M. Sickles , Xiaoning Wang

Low-collisionality plasma in a magnetic field generically develops anisotropy in its distribution function with respect to the magnetic field direction. Motivated by the application to radiation from accretion flows and jets, we explore the…

High Energy Astrophysical Phenomena · Physics 2023-09-20 Alisa Galishnikova , Alexander Philippov , Eliot Quataert

The thermal-photon emission from strongly coupled gauge theories at finite temperature is calculated by using holographic models for QCD in the Veneziano limit (V-QCD). These emission rates are then embedded in hydrodynamic simulations…

High Energy Physics - Phenomenology · Physics 2017-04-05 Ioannis Iatrakis , Elias Kiritsis , Chun Shen , Di-Lun Yang

The rate of the emission of the high energy low-mass dileptons from the QGP is found in the first nonvanishing order with respect to strong coupling. We base on the real-time kinetic approach [2] without an explicit assumption about a…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Makhlin

Photon emission arising in the course of transition between the states of quark-gluon and hadron plasma has been considered. Single-photon distributions and two-photon correlations in central rapidity region have been calculated for heavy…

High Energy Physics - Phenomenology · Physics 2007-05-23 I. V. Andreev

We propose the angular distribution of lepton pairs produced in ultrarelativistic heavy-ion collisions as a probe of thermalization of the quark-gluon plasma. We focus on dileptons with invariant masses large enough that they are produced…

Nuclear Theory · Physics 2024-06-07 Maurice Coquet , Xiaojian Du , Jean-Yves Ollitrault , Soeren Schlichting , Michael Winn

Recent measurements of the azimuthal anisotropy of direct photons in heavy-ion collisions at the energies of RHIC show that it is of the same order as the hadronic one. This finding appears to contradict the expected dominance of photon…

High Energy Physics - Phenomenology · Physics 2015-06-11 Adam Bzdak , Vladimir Skokov

The intensive synchrotron radiation resulting from quarks interacting with the collective confining color field in relativistic heavy ion collisions is discussed. The spectrum of photons with large transverse momentum is calculated and…

High Energy Physics - Phenomenology · Physics 2019-10-02 V. V. Goloviznin , A. V. Nikolskii , A. M. Snigirev , G. M. Zinovjev

We calculate the Bremsstrahlung photon spectrum emitted from dynamically evolving quarkyonic matter, and compare this spectrum with that of a high chemical potential quark-gluon plasma as well as to a hadron gas. We find that the transverse…

Nuclear Theory · Physics 2013-08-09 Giorgio Torrieri , Sascha Vogel , Bjoern Baeuchle

We summarize some recent ideas relating to anisotropic particle production in high-energy collisions. Anisotropic gluon distributions lead to anisotropies of the single-particle azimuthal distribution and hence to disconnected contributions…

High Energy Physics - Phenomenology · Physics 2015-03-16 Adrian Dumitru , Andre V. Giannini , Vladimir Skokov

We discuss heavy-quark dynamics in the quark-gluon plasma under a strong magnetic field induced by colliding nuclei. By the use of the diagrammatic resummation techniques for Hard Thermal Loop and the external magnetic field, we show…

High Energy Physics - Phenomenology · Physics 2016-11-03 Koichi Hattori , Kenji Fukushima , Ho-Ung Yee , Yi Yin