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Neutral Pion Production In Nucleus Nucleus Collisions At 158 And 200 Gev Nucleon
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Book Synopsis Neutral Pion Production in Nucleus-nucleus Collisions at 158 and 200 GeV/nucleon by :
Download or read book Neutral Pion Production in Nucleus-nucleus Collisions at 158 and 200 GeV/nucleon written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Two years ago, at the 12th Winter Workshop on Nuclear Dynamics held here in Snowbird, the authors presented WA80 limits on direct photon production in 200-GeV[sup 32]S+ Au collisions. It was found that the results were consistent (within 1[sigma]) with the absence of an excess of photons over those that can be accounted for by the two-photon decay branches of[pi][sup 0] and[eta] mesons and by the small photon contributions from other radiative decays. They are in the process of finalizing the direct-photon production results from collisions of lead nuclei at 158 GeV/nucleon. The author briefly discusses the status of the analysis and gives some preliminary results at the end of this talk. However, most of this presentation is concerned with a very different aspect of the photon measurements: distributions of neutral pions. In contrast to direct photons which probe initial collision conditions, hadrons, such as neutral pions, interact strongly and decouple late in the reaction evolution and, thus, provide information concerning the system at freeze out. Transverse momentum spectra at low and intermediate p[sub T] relate to thermodynamic and hydrodynamic descriptions of the hot, dense systems. In addition, the high-p[sub T] region reflects the hard-scattering regime and may help one understand initial-state particle production by forming a bridge to proton-proton and proton-nucleus results. It follows that it is essential that the[pi][sup 0] measurements cover a large p[sub T] range.
Book Synopsis Pion Production at 180? in Nucleus-nucleus Collisions by : Stephen Alan Chessin
Download or read book Pion Production at 180? in Nucleus-nucleus Collisions written by Stephen Alan Chessin and published by . This book was released on 1983 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Inclusive Neutral Particle Production in PA and Nucleus-nucleus Collisions at 200 GeV Per Nucleon by : HELIOS.
Download or read book Inclusive Neutral Particle Production in PA and Nucleus-nucleus Collisions at 200 GeV Per Nucleon written by HELIOS. and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pion Production in Nucleus-nucleus Collisions Below a Few GeV by :
Download or read book Pion Production in Nucleus-nucleus Collisions Below a Few GeV written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A general review of experimental data on pion production in A-A collisions for incident energies below a few GeV/nucleon is presented. Early data on inclusive pion spectra, which served as the genesis for present pion measurements, are discussed. The majority of the paper is devoted to present pion experiments, with an emphasis being placed on what such experiments tell about the general features of high-energy A-A collisions. Particular attention is given to multipion production as studied in recent streamer chamber experiments. The review ends with projections on future experiments with the heavier beams that will be available in 1982 at Berkeley, and the higher-energy beams that will hopefully be available in the not too distant future. 39 figures.
Book Synopsis Pion Production and Fragmentation of Nuclei in High Energy Nucleus-nucleus Collisions by : Anders Oskarsson
Download or read book Pion Production and Fragmentation of Nuclei in High Energy Nucleus-nucleus Collisions written by Anders Oskarsson and published by . This book was released on 1983 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pion Production at 180° in Nucleus-nucleus Collisions by :
Download or read book Pion Production at 180° in Nucleus-nucleus Collisions written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A survey experiment of pion production at 180° in nucleus-nucleus collisions is presented. Beams of 1.05 GeV/A and 2.1 GeV/A protons, alphas, and carbon were used, as well as proton beams of 0.80 GeV, 3.5 GeV, and 4.89 GeV, and argon beams of 1.05 GeV/A and 1.83 GeV/A. This is the first such experiment to use the heavier beams. Targets used ranged from carbon to lead. An in-depth review of the literature, both experimental and theoretical, is also presented. The systematics of the data are discussed, and comparisons are made both with prior experiments and with the predictions of the models reviewed. The cross sections appear consistent with a simple single nucleon-nucleon collision picture, without the need for collective or other exotic effects. Suggestions for future work are made.
Book Synopsis Advances in Nuclear Dynamics 4 by : Wolfgang Bauer
Download or read book Advances in Nuclear Dynamics 4 written by Wolfgang Bauer and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 14th Winter Workshop held in Snowbird, Utah, January 31-February 7, 1998
Book Synopsis Particle Production Characteristics in Central Nucleus-nucleus Collisions at 14.6, 60 and 200 GeV/nucleon by : Oscar Edwin Pruet
Download or read book Particle Production Characteristics in Central Nucleus-nucleus Collisions at 14.6, 60 and 200 GeV/nucleon written by Oscar Edwin Pruet and published by . This book was released on 1990 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hadron Production in S+nucleus Collisions at 200 GeV by :
Download or read book Hadron Production in S+nucleus Collisions at 200 GeV written by and published by . This book was released on 1994 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Central collisions between nuclei at relativistic energies form a hot and dense hadronic system over a large volume. Phenomenological models, as well as QCD calculations on the lattice, predict a phase transition in nuclear matter leading to deconfinement, a state of matter in which quarks and gluons are free to move inside the entire volume of the deconfined region. This new state was given the name of Quark Gluon Plasma (QGP). Based on the conjecture that collisions of heavy nuclei at high energies can create the necessary condition of a high energy density thermalized system, a series of experiments were built to search for possible signals of QGP creation. The NA35 collaboration uses a wide acceptance apparatus at the CERN SPS which detects the majority of charged hadrons (h{sup {+-}}), and neutral strange particles produced in reactions of p, 16O and 32S projectiles at 60 and 200 GeV/nucleon lab momentum on different targets. It consists of two major tracking devices which provide the momentum measurement of the charged particles: a 2 m long streamer chamber (SC) which is placed inside a 1.5 T vertex magnet, viewed by three cameras, and a 2.5x1.5x1.0 m3 Time Projection Chamber (TPC). A set of calorimeters was used as the basic trigger device of the experiment, to select central (small impact parameter) collisions. In the data presented here, a calorimeter placed in the beam path selects near head-on collisions, i.e. events where only a small amount of energy (mostly spectator nucleon energy) was detected in an angular acceptance of less than 0.3 degrees around the beam axis. The data sample consists of three systems: S+S, S+Ag and S+Au at 200 GeV/c with trigger cross section of 3, 3.2 and 6% of the total inelastic cross section, respectively.
Book Synopsis Spectra of Pions and Protons in Nuclear Collisions at 200 GeV-nucleon by : Blevis Ira
Download or read book Spectra of Pions and Protons in Nuclear Collisions at 200 GeV-nucleon written by Blevis Ira and published by . This book was released on 1991 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Direct Nucleon-nucleon Collisions Inside the Nucleus According to the Impluse Approximation by : Thomas P. Clements
Download or read book Direct Nucleon-nucleon Collisions Inside the Nucleus According to the Impluse Approximation written by Thomas P. Clements and published by . This book was released on 1960 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Parameterizations of Pion Energy Spectrum in Nucleon-Nucleon Collisions by : Francis A. Cucinotta
Download or read book Parameterizations of Pion Energy Spectrum in Nucleon-Nucleon Collisions written by Francis A. Cucinotta and published by . This book was released on 1998 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pion-nucleon Scattering and Pion Production in Nucleon-nucleon and Nucleus-nucleus Collisions by :
Download or read book Pion-nucleon Scattering and Pion Production in Nucleon-nucleon and Nucleus-nucleus Collisions written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Lecture notes are presented on the following: (1) basic aspects of .pi. N interactions (properties of pions and nucleons, SU(3) and SU(6) classification phenomenology of .pi. N scattering ((3.3) resonance; phase shift analysis, and bag model approach to .pi. N); (2) pion production and absorption in the two nucleon system (NN .-->. NN.pi. (isobar model) and .pi.d reversible NN (existence of dibaryon resonances)); (3) pion absorption in complex nuclei (multiparticle aspects and cascade calculations); and (4) pion production with nuclear targets including (a) nucleon-nucleus, (b) nucleus-nucleus (Fermi-averaged 2-body vs thermodynamic models), and (c) .pi pi. interoferometry.
Book Synopsis Nuclear Modification of Neutral Pion Production at Low X in [square Root] S by : Kenneth Blair Sedgwick
Download or read book Nuclear Modification of Neutral Pion Production at Low X in [square Root] S written by Kenneth Blair Sedgwick and published by . This book was released on 2017 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gold ions are relevant only if one includes deuterons. The two together plus the center of mass energy describe the collision system, 200 GeV d+Au collisions, but the analysis isn't interested in gold ions or deuterons themselves as much as what's going on with the gluons inside them. Specifying the collision system is important, but the nuclear modification factor is actually what is being measured. Suggested keywords include Gluon saturation, Nuclear modification factors, PHENIX, RHIC colliders, sqrt(s) = 200 GeV d+Au collisions (Provided by author's email, paraphrased)
Book Synopsis Negative Particle Production in Nuclear Collisions at 60 and 200 GeV/ Nucleon by : H. Ströbele
Download or read book Negative Particle Production in Nuclear Collisions at 60 and 200 GeV/ Nucleon written by H. Ströbele and published by . This book was released on 1988 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proton and Produced Particle Distributions from Au+Au Collisions at 11.6 A GeV/c by :
Download or read book Proton and Produced Particle Distributions from Au+Au Collisions at 11.6 A GeV/c written by and published by . This book was released on 1994 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The highest net baryon density possible in the laboratory--up to ten times normal nuclear density--is expected in the central region of collisions of heavy nuclei (A ≈ 200) at energies near 10 GeV per nucleon. The transverse energy (E{sub T}) distribution, as well as yields of identified particles (?, K+ and protons), from 197Au + 197Au at 11.64A GeV/c are presented. Two key observations are a large degree of proton s̀̀topping, ̀̀indicating multiple scatterings of the incident nucleons, and a proportional relationship of the pion production to the number of participating nucleons. Strangeness enhancement, a proposed signature of the quark-gluon plasma, is studied via the K+/?+ ratio, which achieves the value of 21% without a strong centrality dependence. Comparisons to similar data taken with a 14.6A GeV/c beam of 28Si are made.
Book Synopsis Nucleus-nucleus Collisions at 60 to 200 GeV by :
Download or read book Nucleus-nucleus Collisions at 60 to 200 GeV written by and published by . This book was released on 1990 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photon measurement results from 16O+197Au reactions at 200 GeV/nucleon obtained by the WA80 collaboration at the CERN SPS are presented. Transverse momentum spectra of neutral pions and of direct photons are shown. At an accuracy within 15% limits, all observed photons are accounted for by known hadronic decays.
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