Production Of Photons In Relativistic Heavy Ion Collisions
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Production Of Photons In Relativistic Heavy Ion Collisions
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Author :
language : en
Publisher:
Release Date : 2016
Production Of Photons In Relativistic Heavy Ion Collisions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
In this work it is shown that the use of a hydrodynamical model of heavy-ion collisions which incorporates recent developments, together with updated photon emission rates, greatly improves agreement with both ALICE and PHENIX measurements of direct photons, supporting the idea that thermal photons are the dominant source of direct photon momentum anisotropy. The event-by-event hydrodynamical model uses the impact parameter dependent Glasma model (IP-Glasma) initial states and includes, for the first time, both shear and bulk viscosities, along with second-order couplings between the two viscosities. Furthermore, the effect of both shear and bulk viscosities on the photon rates is studied, and those transport coefficients are shown to have measurable consequences on the photon momentum anisotropy.
Pion And Photon Production In Heavy Ion Collisions
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Author :
language : en
Publisher:
Release Date : 2008
Pion And Photon Production In Heavy Ion Collisions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Measurement of neutral pions and direct photons are closely connected experimentally, on the other hand they probe quite different aspects of relativistic heavy ion collisions. In this short review of the [pi]° results from the PHENIX experiment at RHIC our focus is on the [phi]-integrated nuclear modification factor, its energy and system size dependence, and the impact of these results on parton energy loss models. We also discuss the current status of high p{sub T} and thermal direct photon measurements both in p+p and Au+Au collisions. Recognizing the advantages of measuring not only the 'signal', but also all the 'references' needed for proper interpretation in the same experiments (with same or similar systematics) we argue that RHIC should regularly include d+A and even d+d collisions into its system size and energy scan.
Relativistic Heavy Ion Collisions
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Author : Rudolph C. Hwa
language : en
Publisher: CRC Press
Release Date : 1990
Relativistic Heavy Ion Collisions written by Rudolph C. Hwa and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Science categories.
Papers of the June 1989 meeting in Beijing by the China Center of Advanced Science and Technology. This small book covers nucleus- nucleus collisions, states of the vacuum, and highly relativistic heavy ions in the experimental realm. Theoretical papers deal with quark-gluon plasma, and relativistic heavy ion collisions. Annotation copyrighted by Book News, Inc., Portland, OR
Photons And Dileptons As Probes Of Early Time Dynamics In Relativistic Heavy Ion Collisions
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Author : Jessica Churchill
language : en
Publisher:
Release Date : 2018
Photons And Dileptons As Probes Of Early Time Dynamics In Relativistic Heavy Ion Collisions written by Jessica Churchill and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
"Vigorous experimental and theoretical programs are underway to study the behaviour of strongly interacting systems in extreme conditions of temperature and density. The only practical way to create such systems in terrestrial laboratories is to collide nuclei at relativistic energies. This is done at accelerator facilities such as the LHC (CERN, Geneva) and RHIC (Brookhaven National Laboratory, USA). These collisions of heavy ions contain so much energy in such a small volume that the colliding nuclei "melt" into a plasma of quarks and gluons. This creates an exotic form of nuclear matter: the quark-gluon plasma (QGP), which exists but for a fleeting moment, and can be studied through the particles that stream to the detectors. Two such particles are leptons and photons, which this research will focus on. As it was discovered that the QGP can be very well modelled by relativistic fluid dynamics, there has been a large theoretical effort to completely characterize this QGP and understand its bulk properties. One of the aims of the McGill group is to obtain a value for the shear and bulk viscosities of the plasma: those are transport coefficients linked to fundamental properties of quantum chromodynamics (QCD), the theory of the nuclear strong interaction. The production of photons and dileptons can be used as probes to study these transport coefficients as they are emitted throughout the out-of-equilibrium evolution of the QGP medium, as well as within thermal equilibrium. In order for such studies to be done, the electromagnetic signal from the pre-equilibrium phase needs to be quantified, which is the topic of this thesis. Using kinetic theory, the production rate of dileptons and photons was calculated for both thermal equilibrium and pre-equilibrium cases. In the thermal equilibrium case, results of the numerical integration of the differential dilepton and photon production rates were matched to the analytical solution. For the out-of-equilibrium case, transport equations derived within the diffusion approximation of the Boltzmann equation were solved numerically to study the thermalization of quarks and gluons in quark-gluon plasma." --
Dynamical Production Of Hadrons And Photons In Hydrodynamics Transport Approaches For Relativistic Heavy Ion Collisions
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Author : Anna Karen Schäfer
language : en
Publisher:
Release Date : 2021
Dynamical Production Of Hadrons And Photons In Hydrodynamics Transport Approaches For Relativistic Heavy Ion Collisions written by Anna Karen Schäfer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
Applications Of Many Body Physics To Relativistic Heavy Ion Collisions
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Author :
language : en
Publisher:
Release Date : 2009
Applications Of Many Body Physics To Relativistic Heavy Ion Collisions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Introduction To Relativistic Heavy Ion Physics
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Author : Jerzy Bartke
language : en
Publisher: World Scientific
Release Date : 2009
Introduction To Relativistic Heavy Ion Physics written by Jerzy Bartke and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Science categories.
This book attempts to cover the fascinating field of physics of relativistic heavy ions, mainly from the experimentalist's point of view. After the introductory chapter on quantum chromodynamics, basic properties of atomic nuclei, sources of relativistic nuclei, and typical detector set-ups are described in three subsequent chapters. Experimental facts on collisions of relativistic heavy ions are systematically presented in 15 consecutive chapters, starting from the simplest features like cross sections, multiplicities, and spectra of secondary particles and going to more involved characteristics like correlations, various relatively rare processes, and newly discovered features: collective flow, high pT suppression and jet quenching. Some entirely new topics are included, such as the difference between neutron and proton radii in nuclei, heavy hypernuclei, and electromagnetic effects on secondary particle spectra.Phenomenological approaches and related simple models are discussed in parallel with the presentation of experimental data. Near the end of the book, recent ideas about the new state of matter created in collisions of ultrarelativistic nuclei are discussed. In the final chapter, some predictions are given for nuclear collisions in the Large Hadron Collider (LHC), now in construction at the site of the European Organization for Nuclear Research (CERN), Geneva. Finally, the appendix gives us basic notions of relativistic kinematics, and lists the main international conferences related to this field. A concise reference book on physics of relativistic heavy ions, it shows the present status of this field.
Light Nuclei Production In Ultra Relativistic Heavy Ion Collisions
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Author : Allan Gert Hansen
language : en
Publisher:
Release Date : 1999
Light Nuclei Production In Ultra Relativistic Heavy Ion Collisions written by Allan Gert Hansen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Production Of Light Nuclei In Relativistic Heavy Ion Collisions
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Author : Joseph Victor Germani
language : en
Publisher:
Release Date : 1993
Production Of Light Nuclei In Relativistic Heavy Ion Collisions written by Joseph Victor Germani and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
Penetrating Probes In Relativistic Heavy Ion Collisions
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Author : GuangYou Qin
language : en
Publisher:
Release Date : 2008
Penetrating Probes In Relativistic Heavy Ion Collisions written by GuangYou Qin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Heavy ion collisions categories.