Parton Cascade Description Of Heavy Ion Collisions At Cern PDF Download
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Author | : |
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Total Pages | : 6 |
Release | : 1998 |
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Download Parton Cascade Description of Heavy Ion Collisions at CERN? Book in PDF, ePub and Kindle
There seems to be a general consensus now that a first glimpse of a QGP-like effect has become visible in the beautiful NA50 data on J/? production and the anomalous suppression phenomenon. On the other hand, it is still widely believed that the dynamics of heavy-ion collisions at CERN SPS energy is predominantly governed by soft, non-perturbative physics. This is ironic: after all, it is unlikely that a QGP could be formed if the underlying dynamics were essentially soft, rather than that it requires intense quark-gluon production with sufficient cascade-like reinteractions which drive the matter to large density and equilibrium. Therefore, the author advocates in this contribution that for ultra-relativistic nucleus-nucleus collisions a description based on the pQCD interactions and cascade evolution of involved partons can and should be used, owing to the claim that short-range parton interactions play an important role at sufficiently high beam energies, including CERN energy √s ≃ 20 A GeV. Here mini-jet production which liberates of quarks and gluons cannot be considered as an isolated rare phenomenon, but can occur quite copiously and may lead to complex multiple cascade-type processes.
Author | : Ryan Benjamin Caveney |
Publisher | : |
Total Pages | : 104 |
Release | : 1996 |
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Download Charge Multiplicity in Heavy Ion Collisions at the CERN SPS Book in PDF, ePub and Kindle
Author | : David Blaschke |
Publisher | : World Scientific |
Total Pages | : 368 |
Release | : 1999-12-29 |
Genre | : Science |
ISBN | : 9814543381 |
Download Understanding Deconfinement In Qcd - Proceedings Of The International Workshop Book in PDF, ePub and Kindle
This volume summarizes our contemporary understanding of the deconfinement transition in QCD at finite temperature and chemical potential. Questions as to whether a quark-gluon plasma exists in the interior of dense astrophysical objects or which bound-state signals have to be studied in order to unambiguously detect the QCD phase transition(s) in future heavy-ion collision programmes at RHIC and LHC are addressed. Progress in answering these questions requires a fusion of lattice QCD with other nonperturbative approaches and low-energy effective models for QCD. Experts in these fields present in the book their methods and their results in understanding the deconfinement phenomenon.
Author | : Jean-Paul Blaizot |
Publisher | : Cern |
Total Pages | : 24 |
Release | : 2003 |
Genre | : Heavy ion collisions |
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Download Study of Potentially Dangerous Events During Heavy-ion Collisions at the LHC Book in PDF, ePub and Kindle
Author | : Benjamin Lungwitz |
Publisher | : |
Total Pages | : 181 |
Release | : 2008 |
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Download Energy Dependence of Multiplicity Fluctuations in Heavy Ion Collisions at the CERN SPS Book in PDF, ePub and Kindle
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Total Pages | : |
Release | : 2001 |
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Download Simulation of Heavy Ion Collisions At[radical] Book in PDF, ePub and Kindle
A new hadronic cascade code (LUCIFER) is introduced, for simulation of relativistic heavy ion collisions at CERN energies and up to RHIC. It is based on a simple, experimentally and theoretically motivated picture of hh interactions. Final state hadrons are produced by decay of intermediate state clusters, or lumps of excited hadronic matter. These are similar to resonances, but have a continuous mass distribution. Clusters are the objects that re-interact in the cascade. Single diffractive dissociation is used to fix the cluster properties. The model has just two parameters:[tau][sub d], the decay time of the clusters, and[tau][sub f] the formation time of the clusters. Comparison is made with recent CERN data in the Pb+ Pb system. The first consistent cascade simulation, of J/[psi] production/suppression is presented. It appears likely that a purely hadronic interpretation can be given to recent CERN data on apparently anomalous J/[psi] suppression in Pb+ Pb.
Author | : European Organization for Nuclear Research |
Publisher | : |
Total Pages | : 512 |
Release | : 2004 |
Genre | : Effective interactions (Nuclear physics) |
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Download Hard Probes in Heavy-ion Collisions at the LRC Book in PDF, ePub and Kindle
Author | : Rudolph C. Hwa |
Publisher | : World Scientific |
Total Pages | : 796 |
Release | : 1995 |
Genre | : Science |
ISBN | : 9789810223991 |
Download Quark-Gluon Plasma 2 Book in PDF, ePub and Kindle
This is a sequel to the review volume Quark-Gluon Plasma. There are 13 articles contributed by leading investigators in the field, covering a wide range of topics about the theoretical approach to the subject. These contributions are timely reviews of nearly all the actively pursued problems, written in a pedagogical style suitable for beginners as well as experienced researchers.
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Total Pages | : 25 |
Release | : 1990 |
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Download Review of CERN Heavy-ion Physics Book in PDF, ePub and Kindle
The primary motivation for studying nucleus-nucleus collisions at very high energies is the possibility of forming a quark-gluon plasma (QGP). In these collisions energy and baryon densities are expected to increase and reach critical values where the quark constituents of the incident nucleons, bound in nuclei, form an extended volume of freely interacting quarks, antiquarks and gluons. Various signatures of the existence of a quark-gluon plasma in these collisions have been proposed: suppression of J/Psi production, an enhancement in strange particle production, event-by-event fluctuations in the rapidity distributions of produced particles, observation of direct photons from the plasma and other observables. The system is expected to evolve dynamically from a pure plasma or mixed phase through expansion, cooling, hadronization and freeze-out. To be able to determine that a new, transient state of matter has been formed it is necessary not only to identify QGP signatures but also to determine the space-time evolution of the collision process. This requires an understanding of the microscopic structure of hadronic interactions, at the level of quarks and gluons, at high temperatures and high densities. In this talk I will describe the physical observables important for understanding the dynamics of heavy-ion collisions at high energies and the present status of experimental results covering these observables. I will then describe the various signatures of QGP formation, present experimental results and plausible interpretations of the results. This talk is not meant to be a comprehensive review, it is rather a summary of important background information, current outstanding problems, observations of particular interest and recent results on dynamics and signatures.
Author | : Paolo Bartalini |
Publisher | : World Scientific Publishing |
Total Pages | : 472 |
Release | : 2018-11-08 |
Genre | : Science |
ISBN | : 981322777X |
Download Multiple Parton Interactions at the LHC Book in PDF, ePub and Kindle
Many high-energy collider experiments (including the current Large Hadron Collider at CERN) involve the collision of hadrons. Hadrons are composite particles consisting of partons (quarks and gluons), and this means that in any hadron–hadron collision there will typically be multiple collisions of the constituents — i.e. multiple parton interactions (MPI). Understanding the nature of the MPI is important in terms of searching for new physics in the products of the scatters, and also in its own right to gain a greater understanding of hadron structure. This book aims at providing a pedagogical introduction and a comprehensive review of different research lines linked by an involvement of MPI phenomena. It is written by pioneers as well as young leading scientists, and reviews both experimental findings and theoretical developments, discussing also the remaining open issues.