Two Particle Correlations In Angular And Momentum Space In Heavy Ion Collisions At Star
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Two Particle Correlations In Angular And Momentum Space In Heavy Ion Collisions At Star
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Author : Elizabeth Wingfield Oldag
language : en
Publisher:
Release Date : 2013
Two Particle Correlations In Angular And Momentum Space In Heavy Ion Collisions At Star written by Elizabeth Wingfield Oldag and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
For over a decade studies of the strong interaction in extremely dense nuclear environments have been done at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. It is hypothesized that colliding two beams of Au nuclei at relativistic speeds creates an environment of hot dense nuclear matter where the quarks and gluons inside the nucleus, which are normally confined within the protons and neutrons, become deconfined into a soup called the quark-gluon plasma. Since direct observation of this short-lived phase is impossible, many sophisticated analysis techniques attempt to study the early interactions via the final state particles. What has emerged from analyses of the data are two, contradictory paradigms for understanding the results. On the one hand the colliding quarks and gluons are thought to strongly interact and reach thermal equilibrium. The other view is that primary parton-parton scattering leads directly to jet fragmentation with little effect from re-scattering. It is in principle possible to distinguish and perhaps falsify one or both of these models of relativistic heavy ion collisions via the analysis of two-particle correlations among all charged particles produced in [mathematical symbols] = 200 GeV Au+Au collisions at the STAR experiment at RHIC. This dissertation presents studies of two-particle correlations, whose derivation can be traced back to Pearson's correlation coefficient, in transverse momentum and angular space. In momentum space a broad peak is observed extending from 0.5-4.0 GeV/c which, as a function of nuclear overlap, remains at a fixed position while monotonically increasing in amplitude. Comparisons to theoretical models suggests this peak is from jet fragmentation. In a complementary study the momentum distribution of correlations in ([eta],[phi]) space is investigated. The momentum distribution of correlated pairs that contribute to the peak near the origin, commonly associated with jet fragmentation, is peaked around 1.5 GeV/c and does not soften with increased centrality. These measurements present important aspects of the available six dimensional correlation space and provide definitive tests for theoretical models. Preliminary findings do not appear to support the hypothesis of a strongly interacting QGP where back-to-back jets are expected to be significantly suppressed.
Introduction To High Energy Heavy Ion Collisions
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Author : Cheuk-Yin Wong
language : en
Publisher: World Scientific
Release Date : 1994
Introduction To High Energy Heavy Ion Collisions written by Cheuk-Yin Wong and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Science categories.
Written primarily for researchers and graduate students who are new in this emerging field, this book develops the necessary tools so that readers can follow the latest advances in this subject. Readers are first guided to examine the basic informations on nucleon-nucleon collisions and the use of the nucleus as an arena to study the interaction of one nucleon with another. A good survey of the relation between nucleon-nucleon and nucleus-nucleus collisions provides the proper comparison to study phenomena involving the more exotic quark-gluon plasma. Properties of the quark-gluon plasma and signatures for its detection are discussed to aid future searches and exploration for this exotic matter. Recent experimental findings are summarised.
Measuring The Size Of Things In The Universe Hbt Interferometry And Heavy Ion Physics Proceedings Of Cris 98
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Author : Antonio Insolia
language : en
Publisher: World Scientific
Release Date : 1999-08-30
Measuring The Size Of Things In The Universe Hbt Interferometry And Heavy Ion Physics Proceedings Of Cris 98 written by Antonio Insolia and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-08-30 with categories.
CRIS (Catania Relativistic Ion Studies) is a recently established series of topical conferences held every two years in the Catania area, in Italy. The aim of these conferences is to discuss specific hot topics in heavy ion physics.The second CRIS Conference was devoted to the interferometric techniques for measuring the size of nuclear sources as well as astrophysical objects. The thrust of its program was somewhat cross-disciplinary. A historical review of early astronomical measurements, and some current applications in astrophysics were included, although the bulk of the program was concerned with the use of HBT in inferring nuclear source sizes and lifetimes.
Phenomenology Of Ultra Relativistic Heavy Ion Collisions
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Author : Wojciech Florkowski
language : en
Publisher: World Scientific Publishing Company
Release Date : 2010-03-24
Phenomenology Of Ultra Relativistic Heavy Ion Collisions written by Wojciech Florkowski and has been published by World Scientific Publishing Company this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-03-24 with Science categories.
This book gives an introduction to main ideas used in the physics of ultra-relativistic heavy-ion collisions. The links between basic theoretical concepts (discussed gradually from the elementary to more advanced level) and the results of experiments are outlined, so that experimentalists may learn more about the foundations of the models used by them to fit and interpret the data, while theoreticians may learn more about how different theoretical ideas are used in practical applications. The main task of the book is to collect the available information and establish a uniform picture of ultra-relativistic heavy-ion collisions. The properties of hot and dense matter implied by this picture are discussed comprehensively. In particular, the issues concerning the formation of the quark-gluon plasma in present and future heavy-ion experiments are addressed.
97 Qcd And High Energy Hadronic Interactions
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Author : J. Thanh Van Tran
language : en
Publisher: Atlantica Séguier Frontières
Release Date : 1997
97 Qcd And High Energy Hadronic Interactions written by J. Thanh Van Tran and has been published by Atlantica Séguier Frontières this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Technology & Engineering categories.
Quark Gluon Plasma Theoretical Foundations
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Author : J. Kapusta
language : en
Publisher: Gulf Professional Publishing
Release Date : 2003-11-25
Quark Gluon Plasma Theoretical Foundations written by J. Kapusta and has been published by Gulf Professional Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-11-25 with Science categories.
The purpose of this volume is to trace the development of the theoretical understanding of quark-gluon plasma, both in terms of the equation of state and thermal correlation functions and in terms of its manifestation in high energy nuclear collisions. Who among us has not wondered how tall a mountain is on a neutron star, what happens when matter is heated and compressed to higher and higher densities, what happens when an object falls into a black hole, or what happened eons ago in the early universe? The study of quark-gluon plasma is related in one way or another to these and other thought provoking questions. Oftentimes the most eloquent exposition is given in the original papers. To this end a selection is made of what are the most important pioneering papers in this field. The early 1950s was an era when high energy multiparticle production in cosmic ray interactions attracted the attention of some of the brightest minds in physics, and so it should be no surprise that the first reprinted papers deal with the introduction of statistical models of particle production. The quark model arose in the 1960s, while QCD as such was recognized as the theory of the strong interactions in the 1970's. The behavior of matter at high temperatures and supranuclear densities became of wide interest in the nuclear and particle physics communities starting in the 1970s, which is when the concept of quark-gluon plasma became established. The history of the field has been traced up to the early 1990s. There are three reasons for stopping at that point in time. First, most of the key theoretical concepts and formalisms arose before 1993, although many of them continue to be developed today and hopefully well into the future. Second, papers written after 1992 are much more readily available than those writen before due to the advent of the World Wide Web and its electronic preprint databases and journals. Finally, in making this collection of reprints available as hardcopy one is limited in the number of pages, and some papers in the present selection should have been deleted in order to make room for post-1993 papers. For the same reason the subject focus must of necessity be limited, which means that in this reprint collection two wide subject areas are not addressed: the behavior of nuclear matter under extreme conditions is not reported, nor is quark matter in neutron stars. The broad categories into which the material has been placed, reflect the diverse studies of quark-gluon plasma and its manifestation. They are: phase-space models of particle production, perturbative QCD plasma, lattice gauge theory, fluid dynamics and flow, strangeness, heavy flavor (charm), electromagnetic signals, parton cascade and minijets, parton energy loss and jet quenching, Hanbury Brown--Twiss (HBT) interferometry, disoriented chiral condensates, phase transition dynamics and cosmology, and color superconductivity. Each chapter is prefaced by an introduction, which contains a list of significant papers which is more complete than the reprinted papers, though by no means exhaustive. It also contains citations to most relevant papers published up to the date of completion of this volume (fall 2002). It is hoped that the short reviews will help bring the reader up to date on the latest developments. The selection of papers cited in each chapter, and in particular the ones selected for reprinting, is solely the responsibility of the Editors. It is based on their best judgement and experience in this field dating back to the mid-1970s. In order to be reprinted a paper must have been pioneering in the sense of originality and impact on the field. Generally they have been cited over a hundred times by other papers published in refereed journals. The final selection was reviewed and discussed among the Editors repeatedly. Just because a paper is not included does not mean they do not know of it or do not have a high regard for it. All of the papers cited or reprinted are original research contributions. There are three other types of publications listed. The first is a compilation of books. The second is a list of reviews, many of which contain a significant amount of original material. The third is a list of the proceedings of the series of Quark Matter meetings, the primary series of international conferences in this field that is attended by both theorists and experimentalists.
100 Years Of Subatomic Physics
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Author : Ernest M Henley
language : en
Publisher: World Scientific
Release Date : 2013-06-28
100 Years Of Subatomic Physics written by Ernest M Henley and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-28 with Science categories.
By year 1911 radioactivity had been discovered for over a decade, but its origin remained a mystery. Rutherford's discovery of the nucleus and the subsequent discovery of the neutron by Chadwick started the field of subatomic physics — a quest for understanding the fundamental constituents of matter.This book reviews the important achievements in subatomic physics in the past century. The chapters are divided into two parts: nuclear physics and particle physics. Written by renowned authors who have made major developments in the field, this book provides the academics and researchers an essential overview of the present state of knowledge in nuclear and particle physics.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1979
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Aeronautics categories.
Rescattering Effects On Intensity Interferometry And Initial Conditions In Relativistic Heavy Ion Collisions
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Author : Yang Li
language : en
Publisher:
Release Date : 2006
Rescattering Effects On Intensity Interferometry And Initial Conditions In Relativistic Heavy Ion Collisions written by Yang Li and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
Quark Gluon Plasma 4
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Author : Rudolph C. Hwa
language : en
Publisher: World Scientific
Release Date : 2010
Quark Gluon Plasma 4 written by Rudolph C. Hwa and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Science categories.
This is a review volume containing articles written by experts on current theoretical topics in the subject of Quark-Gluon Plasma created in heavy-ion collisions at high energy. It is the fourth volume in the series with the same title sequenced numerically. The articles are written in a pedagogical style so that they can be helpful to a wide range of researchers from graduate students to mature physicists who have not worked previously on the subject. A reader should be able to learn from the reviews without having extensive knowledge of the background literature.