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J Psi Suppression As A Signal For The Quark Gluon Plasma
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Book Synopsis J/[Psi] Suppression as a Signal for the Quark-gluon Plasma by :
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.
Book Synopsis J/[Psi] Suppression as an Evidence for Quark Gluon Matter by :
Download or read book J/[Psi] Suppression as an Evidence for Quark Gluon Matter written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The J/[psi] suppression was originally proposed as a signature of the quark-gluon plasma. Strong suppression of J/[psi] production was indeed observed recently by the NA50 Collaboration at CERN SPS. Is it the first signature of a long-awaited quark-gluon matter, or just a peculiar combination of ''conventional'' effects acting together to produce the puzzling pattern observed experimentally? In this lecture, I am trying to summarize the existing theoretical explanations.
Book Synopsis THEORETICAL ISSUES IN J/PSI SUPPRESSION. by : D. KHARZEEV
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 ספר קיצור ראשית חכמה השלם written by and published by . This book was released on 2005 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis J/psi Production and Absorption in P + A and D+Au Collisions by :
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.
Book Synopsis J/psi Production in Quark-Gluon Plasma by :
Download or read book J/psi Production in Quark-Gluon Plasma written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We study J/[psi] production at RHIC and LHC energies with both initial production and regeneration. We solve the coupled set of transport equation for the J/[psi] distribution in phase space and the hydrodynamic equation for evolution of quark-gluon plasma. At RHIC, continuous regeneration is crucial for the J/[psi] momentum distribution while the elliptic flow is still dominated by initial production. At LHC energy, almost all the initially created J/[psi]s are dissociated in the medium and regeneration dominates the J/[psi] properties.
Book Synopsis Production of J/[psi] in Quark-gluon Plasma by : Hafeez R. Hoorani
Download or read book Production of J/[psi] in Quark-gluon Plasma written by Hafeez R. Hoorani and published by . This book was released on 1988 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Production of $J/\psi$ in Quark-gluon Plasma by : H. R. Hoorani
Download or read book Production of $J/\psi$ in Quark-gluon Plasma written by H. R. Hoorani and published by . This book was released on 1988 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis J/R Suppression By Quark-Gluon Plasma Formation by :
Download or read book J/R Suppression By Quark-Gluon Plasma Formation written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis What Causes Psi Suppression in Pb + Pb Collisions? by :
Download or read book What Causes Psi Suppression in Pb + Pb Collisions? written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A reexamination of hadronic comover scattering indicates that this mechanism cannot explain the observed [psi] suppression in Pb+Pb interactions. The possibility of quark-gluon plasma formation is therefore considered. Implications for RHIC and LHC are also discussed. The agreement of the NA50 Pb+Pb data with naive comover models is reassessed. Previous work is reanalyzed and expanded to include feeding of the [psi]' and [chi]{sub c} states to the [psi]. The effect of color screening is also investigated. Only the [psi]/Drell-Yan (DY) ratios are discussed here.
Book Synopsis Nuclear Dependence of J/w and W Production by :
Download or read book Nuclear Dependence of J/w and W Production written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: FNAL E866/NuSea has made a number of measurements of J/[psi] and[psi][prime] production by 800 GeV protons on fixed targets of Be, Fe and W. Preliminary results are presented and discussed in the context of nuclear effects such as energy loss and multiple scattering of the partons, absorption of the produced c[bar c] pairs, and shadowing. Production mechanisms involving color-singlet or color-octet states for the c[bar c] pair which eventually forms a J/[psi] or[psi][prime] have implications on the strength of absorption in the nucleus. These nuclear dependence studies arc critical in furthering the authors understanding of these processes towards future measurements at RHIC and the LHC, where J/[psi] suppression is predicted to be an important signature of the creation of quark-gluon plasma in heavy-ion collisions.
Book Synopsis Quark-Gluon Plasma 2 by : Rudolph C. Hwa
Download or read book Quark-Gluon Plasma 2 written by Rudolph C. Hwa and published by World Scientific. This book was released on 1995 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Quark-gluon Plasma 4 by : Rudolph C. Hwa
Download or read book Quark-gluon Plasma 4 written by Rudolph C. Hwa and published by World Scientific. This book was released on 2010 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Study of Quark Gluon Plasma By Particle Correlations in Heavy Ion Collisions by : Li Yi
Download or read book Study of Quark Gluon Plasma By Particle Correlations in Heavy Ion Collisions written by Li Yi and published by Springer. This book was released on 2016-08-25 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Quark-gluon Plasma 3 by : Rudolph C Hwa
Download or read book Quark-gluon Plasma 3 written by Rudolph C Hwa and published by World Scientific. This book was released on 2004-01-20 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a review monograph on quark-gluon plasma (QGP). Different theoretical and experimental aspects of the program to produce QGP in relativistic heavy-ion collisions are covered by experts in the field. This is the third volume in a series on the subject, and the first such monograph to focus on the implications of the experimental results from RHIC, the relativistic heavy-ion collider at the National Brookhaven Laboratory. The review articles will be useful to experienced researchers as well as to graduate students entering the field.
Book Synopsis Quark-Gluon Plasma by : Kohsuke Yagi
Download or read book Quark-Gluon Plasma written by Kohsuke Yagi and published by Cambridge University Press. This book was released on 2005-12-15 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quark-Gluon Plasma introduces the primordial matter, composed of two types of elementary particles, created at the time of the Big Bang. During the evolution of the universe, Quark-Gluon Plasma (QGP) undergoes a transition to hadronic matter governed by quantum chromodynamics, the law of strong interactions. After an introduction to gauge theories, various aspects of quantum chromodynamic phase transitions are illustrated in a self-contained manner. The cosmological approach and renormalization group are discussed, as well as the cosmological and astrophysical implications of QGP, on the basis of Einstein's equations. Recent developments towards the formation of QGP in ultrarelativistic heavy ion collisions are also presented in detail. This text is suitable as an introduction for graduate students, as well as providing a valuable reference for researchers already working in this and related fields. It includes eight appendices and over a hundred exercises.
Book Synopsis Inclusive J/psi Production Measurement in Pb-Pb Collisions at Sqrt{s_{NN}} by : Lizardo Valencia Palomo
Download or read book Inclusive J/psi Production Measurement in Pb-Pb Collisions at Sqrt{s_{NN}} written by Lizardo Valencia Palomo and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum Chromodynamics predicts that the hot and dense matter produced in ultra-relativistic heavy-ion collisions, the Quark Gluon Plasma (QGP), behaves as a deconfined state of quarks and gluons. Since 1980's it was predicted that quarkonia are suppressed due to screening effects in the QGP, making quarkonia a good tool to probe the plasma.ALICE is the only experiment at the LHC that was designed and built to characterize the physics of the QGP. The muon spectrometer, one of the detectors in ALICE, is used to measure the quarkonia production at forward rapidity. In this thesis the efficiency of the tracking chambers of the muon spectrometer is studied along one year of data taking. The results obtained from real data are compared to simulations in order to compute the systematic uncertainties associated to the tracking apparatus.A complete analysis of the inclusive J/psi --> mu^+ mu^- production in the 2011 Pb-Pb collisions is also presented. The study includes the signal extraction, normalization and acceptance times efficiency corrections. An important part is dedicated to the quantify the systematic uncertainties arising from different sources. The resulting R_{AA} and p_{T} are compared to previous experiments and also to theoretical models.
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