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Strangeness Production In 196 Gev Collisions At The Relativistic Heavy Ion Collider
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Book Synopsis Strangeness Production in 19.6 GeV Collisions at the Relativistic Heavy Ion Collider by : Kyle Richard Englund-Krieger
Download or read book Strangeness Production in 19.6 GeV Collisions at the Relativistic Heavy Ion Collider written by Kyle Richard Englund-Krieger and published by . This book was released on 2010 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this research is to try to discover what occurred during the first three milliseconds of the universe. As of now , Quark-Giuon Plasma, QGP, is what scientists believe existed at the beginning. QGP is studied through the STAR Experiment at the Relativistic Heavy Ton Collider. Mass distributions and fitted transverse momentum spectrum for KSO, /\, and anti-/\ 's were developed . The ratio of /\ to anti-/\ 's was found.
Book Synopsis Charged Xi Production in 130 GeV Au+Au Collisions at the Relativistic Heavy Ion Collider by : Curtis Patrick Leon Lansdell
Download or read book Charged Xi Production in 130 GeV Au+Au Collisions at the Relativistic Heavy Ion Collider written by Curtis Patrick Leon Lansdell and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Strangeness Production and Strange V0 & Charged Hadron Correlation in Heavy-ion Collisions by : Feng Zhao
Download or read book Strangeness Production and Strange V0 & Charged Hadron Correlation in Heavy-ion Collisions written by Feng Zhao and published by . This book was released on 2014 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: In relativistic heavy-ion collisions, experimental evidence indicates that a new form of matter with de-confined quarks and gluons named the Quark-Gluon Plasma(QGP) has been created. The Relativistic Heavy Ion Collider (RHIC) provides a unique opportunity to study the QGP matter. Strange hadron production is believed to be sensitive to parton dynamics in heavy-ion collisions. In particular, the strange quark production rate and its subsequent evolution in the dense partonic medium depend on the beam energy and the net baryon density. The productions of K0s, [Lambda], [Xi], [Omega] at mid-rapidity from Au+Au collisions at the beam energies of 7.7, 11.5, 19.6, 27, and 39GeV from the RHIC Beam Energy Scan Program are measured. We investigate the strangeness enhancement and ratios of anti-baryon to baryon yields as a function of beam energy at RHIC. Nuclear modification factors and ratios of baryon to meson yields are also studied. Implications on collision dynamics due to the increase in the baryon chemical potential at low beam energy and constraints on chemical freeze-out parameters will also be discussed in this thesis. Parity-odd domains are theorized to form inside the QGP and to cause electric charge separation with respect to the reaction plane in the relativistic heavy-ion collisions via the Chiral Magnetic Effect (CME). Such charge separation has been studied at RHIC and LHC via the difference in two particle correlation between the opposite charge and same charge hadrons. The [Lambda](Lambda) and K0s particles are charge-neutral, and are supposed to bear no charge separation effects due to CME. We study the correlation between the neutral particle and charged hadron to investigate background for charged hadron correlation. In addition, the large angular momentum in heavy-ion collisions is predicted to lead to the Chiral Vortical Effect (CVE) which induces a baryon number separation, in analogy with the electric charge separation caused by CME. We carried out a study of [Lambda] - p correlations to search for the CVE. We present measurements of correlations for [Lambda] - h±, K0s - p, [Lambda] - p, in Au+Au collisions at 39GeV and 200GeV, to study the electric charge and baryon number separations across the reaction plane.
Book Synopsis Strange Cluster Formation in Relativistic Heavy Ion Collisions by :
Download or read book Strange Cluster Formation in Relativistic Heavy Ion Collisions written by and published by . This book was released on 1993 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using the cascade code ARC to simulate relativistic heavy ion collisions at Brookhaven AGS energies (11.7--14.6 GeV/c), the authors have estimated the production rate of strange clusters ranging from a hypothetical doubly strange (S=-2) bound ([Lambda][Lambda]){sub b} dibaryon to the hypernuclei {sub [Lambda][Lambda]}6He and {sub [Xi]°[Lambda][Lambda]}7He. For the formation of multi-strange bound systems, high energy heavy ion collisions offer the only feasible method, since one can take advantage of the hyperons which are copiously produced in such collisions (typically 20 [Lambda]`s in a Au + Au central collision at the AGS) to form the composite object by coalescence.
Book Synopsis Strangeness Production in Heavy Ion Collisions by :
Download or read book Strangeness Production in Heavy Ion Collisions written by and published by . This book was released on 2002 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review of strange particle production in heavy ion collisions at ultrarelativistic energies is presented. The particle yields and ratios from SPS and RHIC are discussed in view of the newest developments in understanding collision dynamics, and in view of their role in the search for a quark gluon plasma. A strangeness enhancement, most notably observed in CERN Pb-beam results, shows a remarkable two fold global enhancement with a much larger effect seen in the case of multistrange baryons. Hadronic models did fail to explain this pattern. At RHIC energy strangeness assumes a different role, since temperatures are higher and the central rapidity region almost baryon-free. An intriguing question: ''Did RHIC change the way we understand strangeness production in heavy ion collisions?'' is discussed.
Book Synopsis Strangeness Production in Relativistic Nuclear Collisions by :
Download or read book Strangeness Production in Relativistic Nuclear Collisions written by and published by . This book was released on 1998 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review of strange particle production in heavy ion collisions from AGS to SPS energies is presented. Implications of the newest developments in understanding the collision dynamics and the role of strange particle production in the search for a new phase of matter, in both experimental and theoretical sectors, are discussed.
Book Synopsis Introduction to Relativistic Heavy Ion Physics by : Jerzy Bartke
Download or read book Introduction to Relativistic Heavy Ion Physics written by Jerzy Bartke and published by World Scientific. This book was released on 2009 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book attempts to cover the fascinating field of physics of relativistic heavy ions, mainly from the experimentalist's point of view. After the introductory chapter on quantum chromodynamics, basic properties of atomic nuclei, sources of relativistic nuclei, and typical detector set-ups are described in three subsequent chapters. Experimental facts on collisions of relativistic heavy ions are systematically presented in 15 consecutive chapters, starting from the simplest features like cross sections, multiplicities, and spectra of secondary particles and going to more involved characteristics like correlations, various relatively rare processes, and newly discovered features: collective flow, high pT suppression and jet quenching. Some entirely new topics are included, such as the difference between neutron and proton radii in nuclei, heavy hypernuclei, and electromagnetic effects on secondary particle spectra.Phenomenological approaches and related simple models are discussed in parallel with the presentation of experimental data. Near the end of the book, recent ideas about the new state of matter created in collisions of ultrarelativistic nuclei are discussed. In the final chapter, some predictions are given for nuclear collisions in the Large Hadron Collider (LHC), now in construction at the site of the European Organization for Nuclear Research (CERN), Geneva. Finally, the appendix gives us basic notions of relativistic kinematics, and lists the main international conferences related to this field. A concise reference book on physics of relativistic heavy ions, it shows the present status of this field.
Book Synopsis Composite Fragment Production in Relativistic Heavy-ion Collisions from 2A to 8A GeV by : Richard A. Witt
Download or read book Composite Fragment Production in Relativistic Heavy-ion Collisions from 2A to 8A GeV written by Richard A. Witt and published by . This book was released on 2002 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ø Meson Production in Au-Au Collisions at 200 GeV Measured by the PHENIX Experiment at the Relativistic Heavy Ion Collider by : Mohammed Muniruzzaman
Download or read book Ø Meson Production in Au-Au Collisions at 200 GeV Measured by the PHENIX Experiment at the Relativistic Heavy Ion Collider written by Mohammed Muniruzzaman and published by . This book was released on 2003 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Maximum Relative Strangeness Content in Heavy Ion Collisions Around 30 A·GeV by : Peter Braun-Munzinger
Download or read book Maximum Relative Strangeness Content in Heavy Ion Collisions Around 30 A·GeV written by Peter Braun-Munzinger and published by . This book was released on 2001 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Production of Strange Clusters in Relativistic Heavy Ion Collisions by :
Download or read book Production of Strange Clusters in Relativistic Heavy Ion Collisions written by and published by . This book was released on 1993 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Strangeness Production in Ultrarelativistic Heavy-ion Collisions by : Tetsuo Matsui
Download or read book Strangeness Production in Ultrarelativistic Heavy-ion Collisions written by Tetsuo Matsui and published by . This book was released on 1986 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Inclusive Charged Hadron Transverse Momentum Spectra at Center of Mass Energy of 200 GeV for P+p and D+Au Collisions at the Relativistic Heavy Ion Collider by : Jonathan Edward Gans
Download or read book Inclusive Charged Hadron Transverse Momentum Spectra at Center of Mass Energy of 200 GeV for P+p and D+Au Collisions at the Relativistic Heavy Ion Collider written by Jonathan Edward Gans and published by . This book was released on 2004 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Strangelet Search at the BNL Relativistic Heavy Ion Collider by :
Download or read book Strangelet Search at the BNL Relativistic Heavy Ion Collider written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have searched for strangelets in a triggered sample of 61 million central (top 4percent) Au+Au collisions at sqrt sNN = 200 GeV near beam rapidities at the STAR solenoidal tracker detector at the BNL Relativistic Heavy Ion Collider. We have sensitivity to metastable strangelets with lifetimes of order>_0.1 ns, in contrast to limits over ten times longer in BNL Alternating Gradient Synchrotron (AGS) studies and longer still at the CERN Super Proton Synchrotron (SPS). Upper limits of a few 10-6 to 10-7 per central Au+Au collision are set for strangelets with mass>~;;30 GeV/c2.
Book Synopsis Strangeness in Relativistic Heavy Ion Collisions by : P. Koch
Download or read book Strangeness in Relativistic Heavy Ion Collisions written by P. Koch and published by . This book was released on 1986 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Elliptic Flow Study of Charmed Mesons in 200 Gev Au+au Collisions at the Relativistic Heavy Ion Collider by : Ayman I.A. Hamad
Download or read book Elliptic Flow Study of Charmed Mesons in 200 Gev Au+au Collisions at the Relativistic Heavy Ion Collider written by Ayman I.A. Hamad and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum Chromodynamics (QCD), the theory of the strong interaction between quarks and gluons, predicts that at extreme conditions of high temperature and/or density, quarks and gluons are no longer confined within individual hadrons. This new deconfined state of quarks and gluons is called Quark-Gluon Plasma (QGP). The Universe was in this QGP state a few microseconds after the Big Bang. The Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) on Long Island, NY was built to create and study the properties of QGP.Due to their heavy masses, quarks with heavy flavor (charm and bottom) are mainly created during the early, energetic stages of the collisions. Heavy flavor is considered to be a unique probe for QGP studies, since it propagates through all phases of a collision, and is affected by the hot and dense medium throughout its evolution. Initial studies, via indirect reconstruction of heavy flavor using their decay electrons, indicated a much higher energy loss by these quarks compared to model predictions, with a magnitude comparable to that of light quarks. Mesons such as D0 could provide information about the interaction of heavy quarks with the surrounding medium through measurements such as elliptic flow. Such data help constrain the transport parameters of the QGP medium and reveal its degree of thermalization.Because heavy hadrons have a low production yield and short lifetime (e.g. ct = 120μm for D0), it is very challenging to obtain accurate measurements of open heavy flavor in heavy-ion collisions, especially since the collisions also produce large quantities of light-flavor particles. Also due to their short lifetime, it is difficult to distinguish heavy-flavor decay vertices from the primary collision vertex; one needs a very high precision vertex detector in order to separate and reconstruct the decay of the heavy flavor particles in the presence of thousands of other particles produced in each collision.The STAR collaboration built a new micro-vertex detector and installed it in the experiment in 2014. This state-of-the-art silicon pixel technology is named the Heavy Flavor Tracker (HFT). The HFT was designed in order to perform direct topological reconstruction of the weak decay products from hadrons that include a heavy quark. The HFT consists of four layers of silicon, and it improves the track pointing resolution of the STAR experiment from a few mm to around 30 ℗æm for charged pions at a momentum of 1 GeV/c.In this dissertation, I focus on one of the main goals of the HFT detector, which is to study the elliptic flow v2 (a type of azimuthal anisotropy) for D0 mesons in Au+Au collisions at vsNN = 200 GeV. My analysis is based on the 2014 data set (about 1.2 billion collisions covering all impact parameters) that include data from the HFT detector. There are two new and unique analysis elements used in this dissertation. First, I performed the analysis using a Kalman filter algorithm to reconstruct the charmed-meson candidates. The standard reconstruction is via a simple helix-swim method. The advantage of using the Kalman algorithm is in the use of the full error matrix of each track in the vertex estimation and reconstruction of the properties of the heavy-flavor parent particle. Second, I also used the Tool for Multivariate Analysis (TMVA), a ROOT-environment tool, to its full potential for signal significance optimization, instead of the previous approach based on a set of fixed cuts for separating signal from background.This dissertation presents the elliptic component (v2) of azimuthal anisotropy of D0 mesons as a function of transverse momentum, pT . The centrality (impact parameter) dependence of D0 v2(pT) is also studied. Results are compared with similar studies involving light quarks, and with the predictions of several theoretical models.
Book Synopsis Neutral Strange Particle Production in Ultra - Relativistic Heavy Ion Collisions at [square Root Of][superior S]NN by : Matthew Allan Charles Lamont
Download or read book Neutral Strange Particle Production in Ultra - Relativistic Heavy Ion Collisions at [square Root Of][superior S]NN written by Matthew Allan Charles Lamont and published by . This book was released on 2002 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Neutral Strange Particle Production in Ultra - Relativistic Heavy Ion Collisions at [square Root Of][superior S]NN PDF Online Free](https://books.google.com/books/content/images/frontcover/rZAYswEACAAJ?fife=w200-h370)
