Na49 Results On Single Particle And Correlation Measurements In Central Pb Pb Collisions PDF Download
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Total Pages | : 14 |
Release | : 1998 |
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Download NA49 Results on Single Particle and Correlation Measurements in Central PB+PB Collisions Book in PDF, ePub and Kindle
Single-particle spectra and two-particle correlation functions measured by the NA49 collaboration in central Pb+Pb collisions at 158 GeV/nucleon are presented. These measurements are used to study the kinetic and chemical freeze-out conditions in heavy ion collisions. We conclude that large baryon stopping, high baryon density and strong transverse radial flow are achieved in central Pb+Pb collisions at the SPS.
Author | : Christos N Ktorides |
Publisher | : World Scientific |
Total Pages | : 582 |
Release | : 1999-11-15 |
Genre | : |
ISBN | : 9814543500 |
Download Multiparticle Dynamics - Proceedings Of The Xxviii International Symposium Book in PDF, ePub and Kindle
Multiparticle dynamics is tightly connected with the fundamental properties of the QCD vacuum. This was reflected in the Scientific Programme of the XXVIII International Symposium on Multiparticle Dynamics. Emphasis was given during the sessions to the collective phenomena at high energies, including: fluctuations and correlations, quark-gluon plasma, QCD phase transitions (fractals, intermittency, wavelets), the QCD structure of the Pomeron, and new aspects of multiplicity distributions.
Author | : Andrea Festanti |
Publisher | : Springer |
Total Pages | : 184 |
Release | : 2016-09-07 |
Genre | : Science |
ISBN | : 3319434551 |
Download Measurement of the D0 Meson Production in Pb–Pb and p–Pb Collisions Book in PDF, ePub and Kindle
This thesis presents the first measurement of charmed D0 meson production relative to the reaction plane in Pb–Pb collisions at the center-of-mass energy per nucleon-nucleon collision of √sNN = 2.76 TeV. It also showcases the measurement of the D0 production in p–Pb collisions at √sNN = 5.02 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurement of the D0 azimuthal anisotropy with respect to the reaction plane indicates that low- momentum charm quarks participate in the collective expansion of the high-density, strongly interacting medium formed in ultra-relativistic heavy-ion collisions, despite their large mass. This behavior can be explained by charm hadronization via recombination with light quarks from the medium and collisional energy loss. The measurement of the D0 production in p–Pb collisions is crucial to separate the effect induced by cold nuclear matter from the final- state effects induced by the hot medium formed in Pb–Pb collisions. The D0 production in p–Pb collisions is consistent with the binary collision scaling of the production in pp collisions, demonstrating that the modification of the momentum distribution observed in Pb–Pb collisions with respect to pp is predominantly induced by final-state effects such as the charm energy loss.
Author | : Nora Serafina Brambilla |
Publisher | : World Scientific |
Total Pages | : 551 |
Release | : 2003-08-27 |
Genre | : Science |
ISBN | : 9814485810 |
Download Quark Confinement And The Hadron Spectrum V, Proceedings Of The 5th International Conference Book in PDF, ePub and Kindle
This book provides an update on our understanding of strong interaction, with theoretical and experimental highlights included. It is divided into five sections. The first section is devoted to the investigations into and the latest results on the mechanism of quark confinement. The second and third sections focus respectively on light and heavy quarks (effective field theories, Schwinger-Dyson approach and lattice QCD results). The fourth section deals with the deconfinement mechanism and quark-gluon plasma formation signals. The last section presents highlights of experiments, new physics beyond QCD, and nonperturbative approaches in other theories (strings and SUSY) that may be useful in QCD.
Author | : N. Brambilla |
Publisher | : World Scientific |
Total Pages | : 551 |
Release | : 2003 |
Genre | : Science |
ISBN | : 9812704264 |
Download Quark Confinement and the Hadron Spectrum V Book in PDF, ePub and Kindle
This book provides an update on our understanding of strong interaction, with theoretical and experimental highlights included. It is divided into five sections. The first section is devoted to the investigations into and the latest results on the mechanism of quark confinement. The second and third sections focus respectively on light and heavy quarks (effective field theories, SchwingerOCoDyson approach and lattice QCD results). The fourth section deals with the deconfinement mechanism and quarkOCogluon plasma formation signals. The last section presents highlights of experiments, new physics beyond QCD, and nonperturbative approaches in other theories (strings and SUSY) that may be useful in QCD."
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Release | : 1995 |
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Download First Results from NA49 on Pb+Pb Collisions at 158 GeV Book in PDF, ePub and Kindle
Author | : |
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Total Pages | : 538 |
Release | : 1998 |
Genre | : Nuclear physics |
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Download Nuclear Physics Book in PDF, ePub and Kindle
Author | : G. Capon |
Publisher | : |
Total Pages | : 536 |
Release | : 1998 |
Genre | : Collisions (Nuclear physics) |
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Download Multiparticle Dynamics 1997 Book in PDF, ePub and Kindle
Author | : Lee S. Barnby |
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Total Pages | : |
Release | : 1999 |
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Download Measurements of Lambda, Lambda-bar and K-short from Pb-Pb Collisions at 158 GeV Per Nucleon in a Large Acceptance Experiment Book in PDF, ePub and Kindle
The main reason for studying relativistic heavy-ion collisions is to discover the phase transition from nuclear matter to the Quark-Gluon Plasma. Such a transition is predicted to occur under conditions of high temperature and density. The predicted state features deconfined quarks and gluons as the relevant degrees of freedom instead of colour-singlet hadrons. These new degrees of freedom should lead to an enhanced production of strange quarks which has directly observable consequences on the composition of the final state hadrons detected in such a collision. The NA49 experiment is able to measure hadronic production in central Pb+Pb collisions. It uses a Pb beam, of energy 158 GeV per nucleon, from the CERN SPS with a fixed Pb target. The experiment features four large tracking detectors which can measure the trajectories of charged particles. In this thesis the method of reconstructing neutral strange particles, Lambda, Lambda-bar and K-short from their charged decay products is described. The procedure for correcting the raw yields for losses due to the limited experimental acceptance and efficiency in reconstruction is explained. An estimate of some systematic errors is made. The resulting rapidity distributions, which span either side of mid-rapidity are peaked (with the possible exception of Lambda) and the transverse momentum spectra fit the Hagedorn distribution. The inverse slope parameters, T_Lambda = 274? 5 MeV, T_Lambda-bar = 279? 10 MeV and T_K = 238? 5 MeV are consistent with the picture of transverse flow observed in these collisions. These results are compared with other measurements.
Author | : Rylan Towne Conway |
Publisher | : |
Total Pages | : |
Release | : 2015 |
Genre | : |
ISBN | : 9781339064321 |
Download Jet-quenching Signatures from Very High-pT Dihadron Correlations in Pb+Pb Collisions at Square Root of S NN Book in PDF, ePub and Kindle
Experimental measurements from dihadron correlations triggered with very high-p[subscript]T particles in Pb+Pb collisions at 2.76 TeV are shown. The data set was collected by the Compact Muon Solenoid (CMS) detector at the Large Hadron Collider (LHC) and corresponds to an integrated luminosity of 150 [mu]b−1. The use of high-p[subscript]T track triggers made it possible to study dihadron correlations up to p[subscript]T ~ 50 GeV/c. The presence of azimuthal anisotropies of final state particles in non-central Pb+Pb collisions gives rise to single-particle correlations that are characterized by the Fourier harmonics, v[subscript]n. To isolate the jet components of the correlations, the v2-v4 components are subtracted from the correlations and the per-trigger-particle associated-yields on the near and away side are studied. The data are compared to correlations from p+p collisions at the same center-of-mass energy over a wide range of trigger and associated-particle p[subscript]T and as a function of Pb+Pb event centrality. On the near-side there is evidence of moderate enhancement at low p[superscript]assc [subscript]T. On the away side there is a significant enhancement at p[superscript]assc [subscript]T ~ 0.5 GeV/c and at higher transverse momentum, p[superscript]assc [subscript]T > 3 GeV/c, there is a suppression of about 50% compared to p+p collisions.