Download or read book Correlations of Neutral Pions in Ultrarelativistic Heavy Ion Collisions written by T. Peitzmann and published by . This book was released on 1989 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Two particle Correlations in Ultra Relativistic Heavy Ion Collisions written by Michael Scott Daugherity and published by . This book was released on 2008 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Not Available.

Download or read book Pi Spectra and Correlations from 16O Au Collisions at 200 A GeV written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of neutral pions by the interaction of 200 A GeV proton and 16O projectiles with an Au target has been studied for 1.5 d"[eta] d"2.1. Transverse momentum spectra have been measured between 0.4 GeV/c and 2.8 GeV/c and their dependence on the centrality of the reaction has been investigated. The peripheral spectrum shows a marked change of slope with a hard component starting at about 1.8 GeV/c in close similarity to p + p data. Preliminary analyses of photon data yield an excess over known photon sources for central data which is absent for peripheral reactions. Correlations of 4 photons representing neutral pions have been studied in ultrarelativistic heavy ion collisions. Data were taken in the WA80 experiment at the CERN-SPS with a 200 A GeV oxygen beam. The .pi.° are detected via their decay photons with a high-granularity lead glass array. Special features of interferometry using neutral pions will be discussed. The extracted preliminary parameters for high p/sub T/ pions emitted near midrapidity in O + Au collisions lead to rather small effective source sizes. 23 refs., 8 figs.

Download or read book Pion Correlations in Relativistic Heavy Ion Collisions at HISS written by William Bennett Christie and published by . This book was released on 1990 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Azimuthal correlations of pions in relativistic heavy ion collisions at 1 GeV nucl written by and published by . This book was released on 1995 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Particle Correlations in Ultra Relativistic Heavy Ion Collisions written by Sudhir Bhardwaj and published by LAP Lambert Academic Publishing. This book was released on 2011-12 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum Chromodynamics calculations on the lattice predict that at extremely high energy densities, colliding nuclear matter would undergo a phase transition to deconfined matter of quarks and gluons. The nature of transition, the temperature and the energy density at which the transition occurs depend upon the details of calculations; these depend upon the number of quark flavors introduced in the calculation. This deconfined state of quark and gluons has been named Quark Gluon Plasma(QGP). This work purports to understand the azimuthal distribution of photons produced in Cu+Cu collisions at 200 GeV with Photon Multiplicity Detector (PMD). The PMD is part of the STAR (Solenoidal Tracker At RHIC) experiment.PMD covers a pseudorapidity range of -3.7 to -2.3 with full azimuthal coverage and measures the multiplicity and spatial distribution of photons on an event-by-event basis.The value of second order azimuthal coefficient has been determined for different centralities in different pseudorapidity windows and its pseudorapidity and centrality dependence has been obtained.

Download or read book Three Pion Correlations in Relativistic Heavy Ion Collisions written by Yiming Liu and published by . This book was released on 1985 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Azimuthal Correlations of Pions in Relativistic Heavy Ion Collisions at 1 GeV nucl written by Steffen A. Bass and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Two pion Correlations in Heavy Ion Collisions written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An application of intensity interferometry to relativistic heavy ion collisions is reported. Specifically, the correlation between two like-charged pions is used to study the reactions Ar+KCl.-->.2.pi./sup +-/+X and Ne+NaF.-->.2.pi.−+X. Source sizes are obtained that are consistent with a simple geometric interpretation. Lifetimes are less well determined but are indicative of a faster pion production process than predicted by Monte Carlo cascade calculations. There appears to be a substantial coherent component of the pion source, although measurement is complicated by the presence of final state interactions. Additionally, the generation of spectra of uncorrelated events is discussed. In particular, the influence of the correlation function on the background spectrum is analyzed, and a prescription for removal of this influence is given. A formulation to describe the statistical errors in the background is also presented. Finally, drawing from the available literature, a self-contained introduction to Bose-Einstein correlations and the Hanbury-Brown - Twiss effect is provided, with an emphasis on points of contact between classical and quantum mechanical descriptions.

Download or read book Three pion Hanbury Brown Twiss Correlations in Relativistic Heavy ion Collisions from the STAR Experiment written by and published by . This book was released on 2003 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data from the first physics run at the Relativistic Heavy-Ion Collider at Brookhaven National Laboratory, Au+Au collisions at (square root)s{sub NN} = 130 GeV, have been analyzed by the STAR Collaboration using three-pion correlations with charged pions to study whether pions are emitted independently at freezeout. We have made a high-statistics measurement of the three-pion correlation function and calculated the normalized three-particle correlator to obtain a quantitative measurement of the degree of chaoticity of the pion source. It is found that the degree of chaoticity seems to increase with increasing particle multiplicity.

Download or read book Two pion Correlations in Heavy Ion Collisions written by William Allen Zajc and published by . This book was released on 1982 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurements of Two proton Correlations in Ultra relativistic Heavy ion Collisions written by Sergei Y. Panitkin and published by . This book was released on 1997 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Source Dimensions in Ultrarelativistic Heavy Ion Collisions written by and published by . This book was released on 1994 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent experiments on pion correlations, interpreted as interferometric measurements of the collision zone, are compared with models that distinguish a prehadronic phase and a hadronic phase. The models include prehadronic longitudinal expansion, conversion to hadrons in local kinetic equilibrium, and rescattering of the produced hadrons. The longitudinal radius measured in collisions of 200 GeV/u sulfur nuclei on a heavy target require the existence of a prehadronic phase which converts to the hadronic phase at densities around 0.8 GeV/fm3. The transverse radii cannot be reproduced without introducing more complex dynamics into the transverse expansion.

Download or read book Pion Correlations as a Function of Atomic Mass in Heavy Ion Collisions written by Aaron Dean Chacon and published by . This book was released on 1989 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pion Correlations in Relativistic Heavy Ion Collisions at Heavy Ion Spectrometer Systems HISS written by and published by . This book was released on 1990 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis contains the setup, analysis and results of experiment E684H Multi-Pion Correlations in Relativistic Heavy Ion Collisions''. The goals of the original proposal were: (1) To initiate the use of the HISS facility in the study of central Relativistic Heavy Ion Collisions (RHIC). (2) To perform a second generation experiment for the detailed study of the pion source in RHIC. The first generation experiments, implied by the second goal above, refer to pion correlation studies which the Riverside group had performed at the LBL streamer chamber. The major advantage offered by moving the pion correlation studies to HISS is that, being an electronic detector system, as opposed to the Streamer Chamber which is a visual detector, one can greatly increase the statistics for a study of this sort. An additional advantage is that once one has written the necessary detector and physics analysis code to do a particular type of study, the study may be extended to investigate the systematics, with much less effort and in a relatively short time. This paper discusses the Physics motivation for this experiment, the experimental setup and detectors used, the pion correlation analysis, the results, and the conclusions possible future directions for pion studies at HISS. If one is not interested in all the details of the experiment, I believe that by reading the sections on intensity interferometry, the section the fitting of the correlation function and the systematic corrections applied, and the results section, one will get a fairly complete synopsis of the experiment.

Download or read book Dynamics of Pions in Ultrarelativistic Heavy Ion Collisions written by Sean Gavin and published by . This book was released on 1987 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt: