Parton Structure Through Two Particle Correlations in Au-Au at RHIC. PDF Download
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Author:
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Category :
Languages : en
Pages : 19
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Book Description
A method for determining the presence of partonic scattering through two-particle correlations is developed and applied to models which have jets and mini-jets in them. The author only considers the correlation of mid-rapidity particles because they will be easily measured in large numbers at RHIC. The level of two-particle correlations will be a direct measure of how dense a system is made in Au-Au collisions at RHIC. The STAR TPC will be ideal for making these measurements in the first year of running.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 19
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Book Description
A method for determining the presence of partonic scattering through two-particle correlations is developed and applied to models which have jets and mini-jets in them. The author only considers the correlation of mid-rapidity particles because they will be easily measured in large numbers at RHIC. The level of two-particle correlations will be a direct measure of how dense a system is made in Au-Au collisions at RHIC. The STAR TPC will be ideal for making these measurements in the first year of running.
Author: Thongbay Vongpaseuth
Publisher:
ISBN:
Category : Gold ions
Languages : en
Pages : 392
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Author: Elizabeth Wingfield Oldag
Publisher:
ISBN:
Category :
Languages : en
Pages : 320
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Book Description
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.
Author: Roman Anatolievich Ryutin
Publisher: World Scientific
ISBN: 9814689319
Category : Science
Languages : en
Pages : 380
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Book Description
This unique volume captures the content of the XXXth International Workshop on High Energy Physics. The scope of this volume is much wider than just high-energy physics; it actually concerns and includes materials from all the most fundamental areas of modern physics research: high-energy physics proper, gravitation and cosmology. Presentations embrace both theory and experiment.
Author: Li Yi
Publisher: Springer
ISBN: 1493964879
Category : Science
Languages : en
Pages : 97
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Book Description
This thesis covers several important topics relevant to our understanding of quark-gluon plasma. It describes measurement of the third-order harmonic flow using two-particle correlations and isolation of flow and non-flow contributions to particle correlations in gold-gold collisions. The work also investigates long-range longitudinal correlations in small systems of deuteron-gold collisions. The former is related to the hydrodynamic transport properties of the quark-gluon plasma created in gold-gold collisions. The latter pertains to the question whether hydrodynamics is applicable to small systems, such as deuteron-gold collisions, and whether the quark-gluon plasma can be formed in those small-system collisions. The work presented in this thesis was conducted with the STAR experiment at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory, where the center-of-mass energy of both collision systems was a factor of 100 larger than the rest mass of the colliding nuclei. The results contained in this thesis are highly relevant to our quest for deeper understanding of quantum chromodynamics. The results obtained challenge the interpretation of previous works from several other experiments on small systems, and provoke a fresh look at the physics of hydrodynamics and particle correlations pertinent to high energy nuclear collisions.
Author: Harry W K Cheung
Publisher: World Scientific
ISBN: 9814483516
Category : Science
Languages : en
Pages : 575
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Book Description
This volume contains contributions to the XXI International Symposium on Lepton and Photon Interactions at High Energies, held at the Fermi National Accelerator Laboratory. It gives up-to-date reviews of all aspects of particle physics, written by leading practitioners in the field. The review nature of all the articles makes this volume more accessible to students and researchers in other fields of physics. In addition to new experimental data and advances in theory, the future directions and prospects for the field are covered.The proceedings have been selected for coverage in:• Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings)• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)• CC Proceedings — Engineering & Physical Sciences
Author: Antonino Zichichi
Publisher: World Scientific
ISBN: 9814462098
Category : Science
Languages : en
Pages : 685
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Book Description
Contents:Predicted Signals at the LHC from Technicolor (A Martin)How Supercritical String Cosmology Affects LHC (D V Nanopoulos)Progress on the Ultraviolet Finiteness of Supergravity (Z Bern)Quantum Gravity from Dynamical Triangulation (R Loll)Status of Superstring and M-Theory (J H Schwarz)Strongly Coupled Gauge Theories (R Kenway)Strongly Interacting Matter at High Energy Density (L McLerran)The Nature and the Mass of Neutrinos. Majorana vs Dirac (A Bettini)The Anomalous Spin Distributions in the Nucleon (A Deshpande)and other papers Readership: Students, researchers and academics in the field of subnuclear physics. Keywords:Black Holes;QCD;SUSY;QED;Collider;Attractors
Author: Harry W. K. Cheung
Publisher: World Scientific
ISBN: 9812702970
Category : Science
Languages : en
Pages : 575
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Book Description
This volume contains contributions to the XXI International Symposium on Lepton and Photon Interactions at High Energies, held at the Fermi National Accelerator Laboratory. It gives up-to-date reviews of all aspects of particle physics, written by leading practitioners in the field. The review nature of all the articles makes this volume more accessible to students and researchers in other fields of physics. In addition to new experimental data and advances in theory, the future directions and prospects for the field are covered.
Author:
Publisher: World Scientific
ISBN: 981447651X
Category :
Languages : en
Pages : 81
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Book Description
![Two Particle Correlations with Direct Photon and [pi]0 Triggers in 200 GeV P+p and Au+Au Collisions PDF](https://books.google.com/books/content/images/frontcover/PTaTAQAACAAJ?fife=w80-h100)
Author: Matthew Nguyen
Publisher:
ISBN:
Category :
Languages : en
Pages :
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