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Download or read book Theory Status of Quarkonium Production in Proton-nucleus Collisions written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (16 download)
Download or read book Quarkonium Production in High Energyproton-proton and Proton-nucleus Collisions written by and published by . This book was released on 2011 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a brief overview of the most relevant current issues related to quarkonium production in high energy proton-proton and proton-nucleus collisions along with some perspectives. After reviewing recent experimental and theoretical results on quarkonium production in pp and pA collisions, we discuss the emerging field of polarization studies. Afterwards, we report on issues related to heavy-quark production, both in pp and pA collisions, complemented by AA collisions. To put the work in broader perpectives, we emphasize the need for new observables to investigate the quarkonium production mechanisms and reiterate the qualities that make quarkonia a unique tool for many investigations in particle and nuclear physics.
Author : Palaiseau Workshop Three Days of Quarkonium Production in Proton-Proton and Proton-Nucleus Collisions 2010
Publisher :
ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.:/5 (747 download)
Download or read book Quarkonium 2010 : proceedings of the Workshop "Three Days of Quarkonium Production in Proton-Proton and Proton-Nucleus Collisions" ; École polytechnique, Palaiseau, France, 29 - 31 July 2010 written by Palaiseau Workshop Three Days of Quarkonium Production in Proton-Proton and Proton-Nucleus Collisions 2010 and published by . This book was released on 2011 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Xin-nian Wang
Publisher : World Scientific
ISBN 13 : 9814543691
Total Pages : 202 pages
Book Rating : 4.8/5 (145 download)
Download or read book Quarkonium Production In High-energy Nuclear Collisions, Proceedings Of The Rhic/int 1998 Winter Workshop written by Xin-nian Wang and published by World Scientific. This book was released on 1999-07-06 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Charmonium suppression is a promising signal of quark-gluon plasma. In this volume, the latest development both in experiments and in the theory of charmonium production in high-energy nuclear collisions are presented and discussed.
Author : Elena G. Ferreiro
Publisher :
ISBN 13 :
Total Pages : 187 pages
Book Rating : 4.:/5 (844 download)
Download or read book Proceedings of the Workshop "Three Days of Quarkonium Production in Proton-Proton and Proton-Nucleus Collisions" written by Elena G. Ferreiro and published by . This book was released on 2011 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Xin-Nian Wang
Publisher : World Scientific Publishing Company Incorporated
ISBN 13 : 9789810239114
Total Pages : 189 pages
Book Rating : 4.2/5 (391 download)
Download or read book Quarkonium Production in High-energy Nuclear Collisions written by Xin-Nian Wang and published by World Scientific Publishing Company Incorporated. This book was released on 1999 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Charmonium suppression is a promising signal of quark-gluon plasma. In this volume, the latest development both in experiments and in the theory of charmonium production in high-energy nucleus-nucleus collisions are presented and discussed. This invaluable book is based on E Witten's lectures on topological quantum field theory which were presented in the spring of 1989 at Fine Hall, Princeton. At that time Witten unified several important mathematical works in terms of quantum field theory, most notably the Donaldson polynomial, Gromov/Floer homology and Jones polynomials. In the book Witten explains his three-dimensional construction of Jones polynomials via Chern-Simons gauge theory. The classical moduli space consists of unitary flat connections. To quantize it, he constructs a Hilbert space consisting of holomorphic sections of the natural determinant bundle over the moduli space, or non-Abelian theta functions. He explains that the quantization is independent of complex structures so that the theory becomes topological. He then constructs morphisms in terms of the Feynman path integral. He provides the relevant background, such as the Feynman -- Kac formula and Feynman diagrams, thus making the book more accessible to mathematicians. His construction leads to many beautiful applications, such as the skein relation, the surgery formula and a proof of Verlinde's formula.
Download or read book J/PSI Production Via Chi Sub C Decays in Fixed Target Proton-nucleus Collisions written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decades, the mechanism of production of heavy quarkonium states has been the subject of research efforts involving both theoretical and experimental developments. Even though the predictions of the presently accepted models differ, the amount of experimental data does not allow for a determination of the best suited theory. The particular case of charmonium production in hadron collisions is an attractive test case as the charm is heavy enough to allow for perturbative calculations of the production process, and yet the cross sections involved are large enough so that events can be measured with good statistics. The data collected at the HERA-B detector after the HERA-II upgrade is analyzed and used to estimate the fraction of J/Psi produced via radiative Chi sub c decays. The result is compared to theoretical predictions and it is found to agree with calculations based on the color evaporation model and with the calculations using the non-relativistic quantum chromodynamics model.
Author :
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ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.:/5 (754 download)
Download or read book Quarkonium 2010 written by and published by . This book was released on 2011 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of RIKEN BNL Research Center Workshop written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the structure of the hadron is of fundamental importance in subatomic physics. Production of heavy quarkonia is arguably one of the most fascinating subjects in strong interaction physics. It offers unique perspectives into the formation of QCD bound states. Heavy quarkonia are among the most studied particles both theoretically and experimentally. They have been, and continue to be, the focus of measurements in all high energy colliders around the world. Because of their distinct multiple mass scales, heavy quarkonia were suggested as a probe of the hot quark-gluon matter produced in heavy-ion collisions; and their production has been one of the main subjects of the experimental heavy-ion programs at the SPS and RHIC. However, since the discovery of J/psi at Brookhaven National Laboratory and SLAC National Accelerator Laboratory over 36 years ago, theorists still have not been able to fully understand the production mechanism of heavy quarkonia, although major progresses have been made in recent years. With this in mind, a two-week program on quarkonium production was organized at BNL on June 6-17, 2011. Many new experimental data from LHC and from RHIC were presented during the program, including results from the LHC heavy ion run. To analyze and correctly interpret these measurements, and in order to quantify properties of the hot matter produced in heavy-ion collisions, it is necessary to improve our theoretical understanding of quarkonium production. Therefore, a wide range of theoretical aspects on the production mechanism in the vacuum as well as in cold nuclear and hot quark-gluon medium were discussed during the program from the controlled calculations in QCD and its effective theories such as NRQCD to various models, and to the first principle lattice calculation. The scientific program was divided into three major scientific parts: basic production mechanism for heavy quarkonium in vacuum or in high energy elementary collisions; the formation of quarkonium in nuclear medium as well as the strong interacting quark-gluon matter produced in heavy ion collisions; and heavy quarkonium properties from the first principle lattice calculations. The heavy quarkonium production at a future Electron-Ion Collider (EIC) was also discussed at the meeting. The highlight of the meeting was the apparent success of the NRQCD approach at next-to-leading order in the description of the quarkonium production in proton-proton, electron-proton and electron positron collisions. Still many questions remain open in lattice calculations of in-medium quarkonium properties and in the area of cold nuclear matter effects.
Author : Elena G. Ferreiro
Publisher :
ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.:/5 (91 download)
Download or read book Quarkonium 2010 written by Elena G. Ferreiro and published by . This book was released on 2011 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (893 download)
Download or read book Nuclear Effects in Drell-Yan and Quarkonium Production in Proton-nucleus Collisions written by and published by . This book was released on 1990 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andrew Chisholm
Publisher : Springer
ISBN 13 : 3319231200
Total Pages : 193 pages
Book Rating : 4.3/5 (192 download)
Download or read book Measurements of the X c and X b Quarkonium States in pp Collisions with the ATLAS Experiment written by Andrew Chisholm and published by Springer. This book was released on 2015-09-14 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis, which won one of the six 2015 ATLAS Thesis Awards, concerns the study of the charmonium and bottomonium bound heavy quark bound states. The first section of the thesis describes the observation of a candidate for the chi_b(3P) bottomonium states. This represented the first observation of a new particle at the LHC and its existence was subsequently confirmed by D0 and LHCb experiments. The second part of the thesis presents measurements of the prompt and non-prompt production of the chi_c1 and chi_c2 charmonium states in proton-proton collisions. These measurements are compared to several theoretical predictions and can be used to inform the development of theoretical models of quarkonium production.
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (727 download)
Download or read book Photoproduction of Quarkonium in Proton-proton and Nucleus-nucleus Collisions written by and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 185 pages
Book Rating : 4.:/5 (946 download)
Download or read book Heavy-flavour and Quarkonium Production in the LHC Era written by and published by . This book was released on 2016 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews the study of open heavy-flavour and quarkonium production in high-energy hadronic collisions, as tools to investigate fundamental aspects of Quantum Chromodynamics, from the proton and nucleus structure at high energy to deconfinement and the properties of the Quark-Gluon Plasma. Emphasis is given to the lessons learnt from LHC Run 1 results, which are reviewed in a global picture with the results from SPS and RHIC at lower energies, as well as to the questions to be addressed in the future. The report covers heavy flavour and quarkonium production in proton-proton, proton-nucleus and nucleus-nucleus collisions. This includes discussion of the effects of hot and cold strongly interacting matter, quarkonium photo-production in nucleus-nucleus collisions and perspectives on the study of heavy flavour and quarkonium with upgrades of existing experiments and new experiments. The report results from the activity of the SaporeGravis network of the I3 Hadron Physics programme of the European Union 7th Framework Programme.
Author : Helmut Satz
Publisher : Springer Science & Business Media
ISBN 13 : 3642835244
Total Pages : 354 pages
Book Rating : 4.6/5 (428 download)
Download or read book Quark Matter written by Helmut Satz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the Editors Preface: "Quark Matter 1987 was attended by about 250 scientists, representing 75 research institutions around the world - the scientific community engaged in experimental and theoretical studies of high energy nuclear collisions. The central theme of the meeting was the possibility of achieving extreme energy densities in extended systems of strongly interacting matter - with the ultimate aim of creating in the laboratory a deconfined state of matter, a state in which quarks and gluons attain the active degrees of freedom. High energy accelerator beams and cosmic radiation projectiles provide the experimental tools for this endeavour; on the theoretical side, it is intimately connected to recent developments in the non-perturbative study of quantum chromodynamics. Phase transitions between hadronic matter and quark-gluon plasma are of basic interest also for our understanding of the dynamics of the early universe ... A very special feature of this Sixth Quark Matter Conference was the advent of the first experimental results from dedicated accelerator studies. These were conducted during 1986/87 at the AGS of Brookhaven National Laboratory ... and at the CERN SPS ... An intense discussion of these data formed the main activity of the meeting.
Author : Darren McGlinchey
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (859 download)
Download or read book Cold Nuclear Matter Effects on J/psi-->e+e- and Psi'-->;e+e- Production in D+Au Collisions at 200 Gev written by Darren McGlinchey and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Mesons composed of heavy quark-antiquark pairs, known as quarkonia, provide the only direct probe of the screening length in the deconfined state of quarks and gluons, known as the quark gluon plasma (QGP), which is believed to be produced in high energy heavy ion collisions. However, the observation of suppression of quarkonia production in heavy ion collisions at high energies is complicated by the modification of quarkonia production in normal nuclear matter. Measuring the modification of quarkonia production due to the effects of normal nuclear matter, often termed cold nuclear matter (CNM) effects, provide a critical baseline for understanding the properties of the QGP. Measurements of CNM effects on quarkonia production are also interesting in their own right, and can be measured independently in proton-nucleus (p+A) collisions. The modification of quarkonia production in p+A collisions provides insight into quarkonia production mechanisms unavailable through the study of proton-proton collisions alone. The study of quarkonia production in p+A collisions over a wide range of kinematic variables can also provide constraints on the modification of parton distribution functions in nuclei. In order to quantify the CNM effects present at the Relativistic Heavy Ion Collider (RHIC), the PHENIX experiment has recorded data on d+Au collisions at \sqsn=200 GeV. The analysis of J/psi→e+e- and psi'→e+e- production from that data set is presented here. Both J/psi and psi' production are found to be suppressed in d+Au relative to p+p collisions, with the suppression increasing for collisions with small impact parameters. The psi' production is found to be much more suppressed than J/psi production, a result which is unexpected based on measurements at lower collision energy and present theoretical pictures. A parametrization of the J/psi modification measured by PHENIX in terms of two CNM effects is also presented. One is the nuclear breakup of the forming quarkonium state through collisions with nucleons during the d+Au collision. The other is the modification of the gluon distribution in the Au nucleus. It is found that the two effects can be separated due to the very different impact parameter dependencies. A strongly non-linear geometric dependence on the modification of the gluon distribution function is observed, with the modification found to be concentrated near the center of the Au nucleus. This parametrization is also used to estimate the modification of J/psi production in Au+Au collisions due to CNM effects. This modification is compared to PHENIX measurements of J/psi production in Au+Au collisions. Suppression of J/psi production in Au+Au collisions beyond CNM effects is observed. This excess suppression is interpreted as suppression of J/psi production due to the formation of a QGP.
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ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (16 download)
Download or read book Cold Nuclear Matter Effects on Quarkonium Production from the SPS to the LHC written by and published by . This book was released on 2009 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The J/?,???????? and?c production yields are expected to be considerably suppressed in a quark-gluon plasma. In addition, the? states, with the possible exception of the 1S state, are also expected to be suppressed. However, in proton-nucleus collisions all the quarkonium production cross sections scale less than linearly with the number of binary nucleon-nucleon collisions. These 'cold nuclear matter' effects need to be accounted for before signals of the high density QCD medium can be identified in the measurements made in nucleus-nucleus collisions. There are two cold nuclear matter effects important for midrapidity quarkonium production: 'nuclear absorption', a final-state effect, and shadowing, an initial-state effect. We characterize these effects and study their energy and rapidity dependence.
