Two Particle Correlations Of Identified Particles In Heavy Ion Collisions At Star
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Two Particle Correlations Of Identified Particles In Heavy Ion Collisions At Star
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Author : Prabhat Bhattarai
language : en
Publisher:
Release Date : 2016
Two Particle Correlations Of Identified Particles In Heavy Ion Collisions At Star written by Prabhat Bhattarai 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.
The study of quarks and their interactions through gluons has been an active area of research since their discovery. For two decades the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory has been dedicated to studying the interactions between quarks by producing nuclear matter in an extremely dense and hot environment. It has been hypothesized that colliding beams of atomic nuclei near the speed of light creates the hot and dense environment in which all quarks in the nuclei de-confine to form a short-lived state of matter called a Quark Gluon Plasma (QGP). Because of the short lifetime of QGP, it is impossible to observe it directly and, the only way to study such matter is through the final state particles. Two-particle correlation, which is defined using Pearson's normalized covariance, is one of the techniques to study the early interactions via the final state particles. A broad survey has been made to study the two-particle correlations of identified-charged hadrons (pi, K and p) in various ranges of momentum for the hadrons produced in √sNN=200 GeV Au+Au collisions at the STAR experiment at RHIC. A total of 2123 two-dimensional independent structures made by correlation coefficients in relative angular space in (eta, phi) for different combinations of identified hadrons have been studied. Correlations between any two identified particles contrasts to all-particle correlations giving an opportunity to study the contribution of each particle species in the hadronization processes. As a new feature, same-side anti-correlations are observed in both like-sign and unlike-sign pairs in certain yT bins and in certain identified particles. A significant feature of the final state distribution of particles is an azimuthal anisotropy which is defined as the second Fourier component; the amplitude is proportional to parameter v2. We report the measure of azimuthal anisotropy of identified hadrons for the first time and test for the factorization used in conventional analysis. The data presented here constitute a comprehensive measurement of the light-flavor, di-hadron density as function of collision centrality, transverse momentum and 2D relative angles in longitudinal (beam direction) and azimuthal directions.
Study Of Quark Gluon Plasma By Particle Correlations In Heavy Ion Collisions
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Author : Li Yi
language : en
Publisher: Springer
Release Date : 2016-08-25
Study Of Quark Gluon Plasma By Particle Correlations In Heavy Ion Collisions written by Li Yi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-25 with Science categories.
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.
Charge Multiplicity Asymmetry Correlation Study Searching For Local Parity Violation At Rhic For Star Collaboration
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Author : Quan Wang
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-08-13
Charge Multiplicity Asymmetry Correlation Study Searching For Local Parity Violation At Rhic For Star Collaboration written by Quan Wang and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-08-13 with Science categories.
It has been suggested that local parity violation (LPV) in Quantum Chromodynamics (QCD) would lead to charge separation of quarks by the Chiral Magnetic Effect (CME) in heavy ion collisions. Charge Multiplicity Asymmetry Correlation Study Searching for Local Parity Violation at RHIC for STAR Collaboration presents the detailed study of charge separation with respect to the event plane. Results on charge multiplicity asymmetry in Au+Au and d+Au collisions at 200 GeV by the STAR experiment are reported. It was found that the correlation results could not be explained by CME alone. Additionally, the charge separation signal as a function of the measured azimuthal angle range as well as the event-by-event anisotropy parameter are studied. These results indicate that the charge separation effect appears to be in-plane rather than out-of-plane. It is discovered that the charge separation effect is proportional to the event-by-event azimuthal anisotropy and consistent with zero in events with zero azimuthal anisotropy. These studies suggest that the charge separation effect, within the statistical error, may be a net effect of event anisotropy and correlated particle production. A potential upper limit on the CME is also presented through this data.
High Pt Physics In The Heavy Ion Era
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Author : Jan Rak
language : en
Publisher: Cambridge University Press
Release Date : 2013-04-25
High Pt Physics In The Heavy Ion Era written by Jan Rak and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-25 with Science categories.
One of few books to address both high-pT physics and relativistic heavy ion collisions. Essential handbook for graduates and researchers.
Proceedings Of The Xxxii International Symposium On Multiparticle Dynamics
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Author : A. N. Sissakian
language : en
Publisher: World Scientific
Release Date : 2003
Proceedings Of The Xxxii International Symposium On Multiparticle Dynamics written by A. N. Sissakian and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Science categories.
This book covers a wide range of problems in elementary particle production physics OCo particle fluctuations and correlations, diffractive processes, soft and hard processes in quantum chromodynamics, heavy ion collisions, etc. Of the utmost importance are inclusion-theoretical papers devoted to the problems associated with high and even very high multiplicity particle production, making proposals for experiments at existing and forthcoming colliders of elementary particles."
Heavy Ion Physics From Bevalac To Rhic Proceedings Of The Relativistic Heavy Ion Symposium Aps Centennial Meeting 99
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Author : Richard Seto
language : en
Publisher: World Scientific
Release Date : 1999-11-15
Heavy Ion Physics From Bevalac To Rhic Proceedings Of The Relativistic Heavy Ion Symposium Aps Centennial Meeting 99 written by Richard Seto and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-11-15 with categories.
This book represents the proceedings of a symposium held during the centennial meeting of the American Physical Society. It covers the latest results in experimental heavy ion physics from the Alternating Gradient Accelerator in the US and the SpS at CERN, and summarizes the current theoretical and experimental state of the field before the commissioning of RHIC. Among the highlights are the theoretical predictions made for what the experimentalists will see in the high temperature matter expected to be formed at the new machine.
Electromagnetic And Hadronic Probes Of Nuclear Matter
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Author : TAPS Workshop IV
language : en
Publisher: Atlantica Séguier Frontières
Release Date : 1998
Electromagnetic And Hadronic Probes Of Nuclear Matter written by TAPS Workshop IV 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 1998 with categories.
The Most Unexpected At Lhc And The Status Of High Energy Frontier
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Author : Antonino Zichichi
language : en
Publisher: World Scientific
Release Date : 2012
The Most Unexpected At Lhc And The Status Of High Energy Frontier written by Antonino Zichichi and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Science categories.
Hot Theoretical Topics: Ultraviolet Behavior of N=8 Supergravity (L J Dixon); Is the Best Superstring Model NP Complete? (M R Douglas); Erice Lecture on Microscopic Gravity (G Dvali); Supergravity: Foundations and Applications (S Ferrara); Orienfold String Vacua and Strings at the LHC (D Luest); Seminar on Specialized Topics: Status of Dark Matter and Neutrino Physics (A Bettini); Experimental Evidence for Pointlike Baryons at q2 = 4MB2 (S Pacetti); Neutrino Masses, Dark Matter, Baryon Asymmetry and Inflation can be Explained at Once (M Shaposhnikov); Results from RHIC with Implications for LHC (M J Tannenbaum); Quantum Gravity without Space-Time Singularities or Horizons (G 't Hooft); Diffraction in Deep Inelastic Electron Proton Scattering at HERA (G Wolf); The Lesson Needed for the Future (A Zichichi); Highlights from Laboratories: Highlights from RHIC (P R Sorensen); The LHC and Beyond — The Energy Frontier (R D Heuer); Highlights from the Gran Sasso Underground Laboratory (E Coccia); Highlights from Fermilab (S J Parke); Special Sessions for New Talents: Radiation Damage Studies for Silicon Sensors for the XFEL (H Perrey); Notes on Chern–Simons Theory in the Temporal Gauge (A Smirnov); Dark Matter via Many Copies of the Standard Model (A Vikman).
Dynamics And Thermodynamics With Nuclear Degrees Of Freedom
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Author : Philippe Chomaz
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-07-28
Dynamics And Thermodynamics With Nuclear Degrees Of Freedom written by Philippe Chomaz and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-07-28 with Science categories.
This volume is the outcome of a community-wide review of the field of dynamics and thermodynamics with nuclear degrees of freedom. It presents the achievements and the outstanding open questions in 26 articles collected in six topical sections and written by more than 60 authors. All authors are internationally recognized experts in their fields.
Properties Of Qcd Matter At High Baryon Density
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Author : Xiaofeng Luo
language : en
Publisher: Springer Nature
Release Date : 2022-12-01
Properties Of Qcd Matter At High Baryon Density written by Xiaofeng Luo and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-01 with Science categories.
This book highlights the discussions by renown researchers on questions emerged during transition from the relativistic heavy-ion collider (RHIC) to the future electron ion collider (EIC). Over the past two decades, the RHIC has provided a vast amount of data over a wide range of the center of mass energies. What are the scientific priorities, after RHIC is shut down and turned to the future EIC? What should be the future focuses of the high-energy nuclear collisions? What are thermodynamic properties of quantum chromodynamics (QCD) at large baryon density? Where is the phase boundary between quark-gluon-plasma and hadronic matter at high baryon density? How does one make connections from thermodynamics learned in high-energy nuclear collisions to astrophysical topics, to name few, the inner structure of compact stars, and perhaps more interestingly, the dynamical processes of the merging of neutron stars? While most particle physicists are interested in Dark Matter, we should focus on the issues of Visible Matter! Multiple heavy-ion accelerator complexes are under construction: NICA at JINR (4 ~ 11 GeV), FAIR at GSI (2 ~ 4.9 GeV SIS100), HIAF at IMP (2 ~ 4 GeV). In addition, the heavy-ion collision has been actively discussed at the J-PARC. The book is a collective work of top researchers from the field where some of the above-mentioned basic questions will be addressed. We believe that answering those questions will certainly advance our understanding of the phase transition in early universe as well as its evolution that leads to today's world of nature.