Download or read book J psi Suppression in Heavy Ion Collisions Interplay of Hard and Soft QCD Processes written by and published by . This book was released on 1998 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soft and Hard Probes of QCD Topological Structures in Relativistic Heavy Ion Collisions written by Shuzhe Shi and published by Springer Nature. This book was released on 2019-08-30 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis makes significant advances in the quantitative understanding of two intrinsically linked yet technically very different phenomena in quantum chromodynamics (QCD). Firstly, the thesis investigates the soft probe of strong interaction topological fluctuations in the quark-gluon plasma (QGP) which is made possible via the anomalous chiral transport effects induced by such fluctuations. Here, the author makes contributions towards establishing the first comprehensive tool for quantitative prediction of the chiral magnetic effect in the QGP that is produced in heavy ion collision experiments. Secondly, the thesis deals with the hard probe of strongly coupled QGP created in heavy-ion collisions. In particular, this study addresses the basic question related to the nonperturbative color structure in the QGP via jet energy loss observables. The author further develops the CUJET computational model for jet quenching and uses it to analyze the topological degrees of freedom in quark-gluon plasma. The contributions this thesis makes towards these highly-challenging problems have already generated widespread impacts in the field of quark-gluon plasma and high-energy nuclear collisions.

Download or read book Open Heavy Flavor and Other Hard Probes in Ultra relativistic Heavy ion Collisions written by Jan Uphoff and published by . This book was released on 2013 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pattern of J psi Suppression in Ultra relativistic Heavy ion Collisions written by Ming-Chung Chu and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book J psi And psi prime Suppression in High energy Heavy ion Collisions written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The anomalous suppression of J/[psi] production in Pb-Pb collisions at 158 GeV observed by the NA50 Collaboration can be explained as due to the occurrence of a new phase of strong J/[psi] absorption, which sets in when the local energy density exceeds about 3.4 GeV/fm[sup 3]. The peculiar behavior of the[psi][sup']/[psi] ratio in[ital p]-A and nucleus-nucleus collisions can be understood as due to approximately equal[psi]-N and[psi][sup']-N absorption cross sections, but greater absorption cross sections for[psi][sup'] than J/[psi] with regard to absorption by soft particles and matter in the new phase.

Download or read book J psi Suppression in Ultra relativistic Heavy Ion Collisions written by Robert Alexander Ritchie and published by . This book was released on 1990 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transverse Momentum Dependence of J psi Suppression in Ultra relativistic Heavy ion Collisions written by Ming Chung Chu and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book J Psi Suppression as a Signal for the Quark gluon Plasma written by and published by . This book was released on 1997 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors review the search for the quark-gluon plasma using the signal of the suppression of J/[psi] production in high-energy heavy-ion collisions. Recent anomalous J/[psi] suppression in high-energy Pb-Pb collisions observed by the NA50 Collaboration are examined and compared with earlier results from pA and nucleus-nucleus collisions with heavy ions of smaller mass numbers. The anomalous suppression of J/[psi] production in Pb-Pb collisions can be explained as due to the occurrence of a new phase of strong J/[psi] absorption, which sets in when the number of nucleon-nucleon collisions at a spatial point exceeds about 4 and corresponds to a local energy density of about 3.4 GeV/fm3.

Download or read book Signatures of Absorption Mechanisms for J And Production in High Energy Heavy Ion Collisions written by and published by . This book was released on 1997 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: J/psi and psi ̀produced in high-energy heavy-ion collisions are absorbed by their collisions with nucleons and produced soft particles, leading to two distinct absorption mechanisms. The signature of absorption by produced soft particles, as revealed by psi ̀production data, consists of a gap and a change of the slope in going from the pA line to the nucleus-nucleus line when we make a semi-log plot of the survival probability as a function of the path length. Using this signature, we find from the J/psi production data in pA, O-Cu, O-U, and S-U collisions that the degree of J/psi absorption by produced soft particles is small and cannot account for the J/psi data in Pb-Pb collisions. The anomalous suppression of J/psi production in Pb-Pb collisions can be explained as due to the occurrence of a new phase of strong J/psi absorption, which sets in when the local energy density exceeds about 3.4 GeV/fm3. To probe the chemical content of the new phase, we propose to study the abundance of open-charm mesons and charm hyperons which depends sensitively on the quark chemical potential.

Download or read book THEORETICAL ISSUES IN J PSI SUPPRESSION written by D. KHARZEEV and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Two decades ago Matsui and Satz suggested that Debye screening in the quark-gluon plasma would result in J/{psi} suppression in heavy ion collisions. Much has happened in the subsequent years, and the picture of quark-gluon plasma at present is rapidly evolving - what does it imply for the J/{psi} suppression? What are the recent RHIC and SPS results trying to tell us? What else has to be done? This talk is an attempt to address these questions.

Download or read book Signatures of Absorption Mechanisms for J psi And psi Production in High Energy Heavy Ion Collisions written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: J/psi and psi' produced in high-energy heavy-ion collisions are absorbed by their collisions with nucleons and produced soft particles, leading to two distinct absorption mechanisms. The signature of absorption by produced soft particles, as revealed by psi' production data, consists of a gap and a change of the slope in going from the pA line to the nucleus-nucleus line when we make a semi-log plot of the survival probability as a function of the path length. Using this signature, we find from the J/psi production data in pA, O-Cu, O-U, and S-U collisions that the degree of J/psi absorption by produced soft particles is small and cannot account for the J/psi data in Pb-Pb collisions. The anomalous suppression of J/psi production in Pb-Pb collisions can be explained as due to the occurrence of a new phase of strong J/psi absorption, which sets in when the local energy density exceeds about 3.4 GeV/fm3. To probe the chemical content of the new phase, we propose to study the abundance of open-charm mesons and charm hyperons which depends sensitively on the quark chemical potential.

Download or read book Psi and J Psi Suppression in High energy Nucleon nucleus and Nucleus nucleus Collisions written by and published by . This book was released on 1995 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The observed features of [psi]' to J/[psi] suppression in pA and nucleus-nucleus collisions can be explained in terms of a two-component absorption model. For the hard component of the absorption due to the interaction of the produced c{bar c} systems with baryons at high relative energies, the absorption cross sections are insensitive to the radii of the c{bar c} systems, as described by the Additive Quark Model. For the soft component due to the low energy c{bar c} interactions with soft particles produced by other baryon-baryon collisions, the absorption cross sections are greater for [psi]' than for J/[psi], because the breakup threshold for [psi]' is much smaller than for [psi].

Download or read book J psi Production and Absorption in P A and D Au Collisions written by and published by . This book was released on 2010 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The level of 'anomalous' charmonium suppression in high-energy heavy-ion collisions and its interpretation as a signal of quark-gluon plasma formation requires a robust understanding of charmonium production and absorption in proton-nucleus collisions. In a previous study we have shown that, contrary to common belief, the so-called J/[psi] 'absorption cross section', [sigma]{sub abs}{sup J/[psi]}, is not a 'universal constant' but, rather, an effective parameter that depends very significantly on the charmonium rapidity and on the collision energy. Here we present ugraded Glauber calculations with the EPS09 parameterization of nuclear modifications of the parton densities. We confirm that the effective 'absorption cross section' depends on the J/{psi} kinematics and the collision energy. We also make further steps towards understanding the physics of the mechanisms behind the observed 'cold nuclear matter' effects.

Download or read book Unresolved Questions in J psi Production and Propagation in Nuclei written by and published by . This book was released on 1998 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to understand the J/[psi] suppression arising from the possible occurrence of the quark-gluon plasma in high-energy heavy-ion collisions, it is necessary to have a comprehensive picture how the J/[psi] and its precursors are produced, what their properties after production are, and how the J/[psi] and its precursors propagate inside nuclear matter. There are unresolved questions in the descriptions of J/[psi] production and propagation. The author outlines some of these questions and discusses the approaches for their resolution.

Download or read book Psi Prime and J Psi Suppression in High energy Nucleon nucleus and Nucleus nucleus Collisions written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The observed features of[psi]' to J/[psi] suppression in pA and nucleus-nucleus collisions can be explained in terms of a two-component absorption model. For the hard component of the absorption due to the interaction of the produced c[bar c] systems with baryons at high relative energies, the absorption cross sections are insensitive to the radii of the c[bar c] systems, as described by the Additive Quark Model. For the soft component due to the low energy c[bar c] interactions with soft particles produced by other baryon-baryon collisions, the absorption cross sections are greater for[psi]' than for J/[psi], because the breakup threshold for[psi]' is much smaller than for[psi].

Download or read book On the X IND F Distribution of J psi s Produced in Heavy Ion Collisions written by Francisco de Oliveira Durães and published by . This book was released on 2002 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book QCD Matter Under Extreme Conditions written by Thorsten Renk and published by . This book was released on 2002 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: