Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 17
Book Description
Production of Strange Clusters in Relativistic Heavy Ion Collisions
Production of Strange Clusters in Relativistic Heavy Ion Collisions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 17
Book Description
We address a number of issues related to the production of strangeness in high energy heavy ion collisions, including the possibility that stable states of multi-strange hyperonic or quark matter might exist, and the prospects that such objects may be created and detected in the laboratory. We make use of events generated by the cascade code ARC to estimate the rapidity distribution dN/dy of strange clusters produced in Si+Au and Au+Au collisions at AGS energies. These calculations are performed in a simple coalescence model, which yields a consistent description of the strange cluster (d, [sup 3]HE, [sup 3]H, [sup 4]He) production at these energies. If a doubly strange, weakly bound [Lambda][Lambda] dibaryon exists, we find that it is produced rather copiously in Au+Au collisions, with dN/dy [approximately]0.1 at raid-rapidity. If one adds another non-strange or strange baryon to a cluster, the production rate decreases by roughly one or two orders of magnitude, respectively. For instance, we predict that the hypernucleus [sub [Lambda][Lambda]][sup 6]He should have dN/dy [approximately]5 [times] 10[sup [minus]6] for Au+Au central collisions. It should be possible to measure the successive [Lambda] [yields] p[pi][minus] weak decays of this object. We comment on the possibility that conventional multi-strange hypernuclei may serve as doorway states'' for the production of stable configurations of strange quark matter, if such states exist.
Publisher:
ISBN:
Category :
Languages : en
Pages : 17
Book Description
We address a number of issues related to the production of strangeness in high energy heavy ion collisions, including the possibility that stable states of multi-strange hyperonic or quark matter might exist, and the prospects that such objects may be created and detected in the laboratory. We make use of events generated by the cascade code ARC to estimate the rapidity distribution dN/dy of strange clusters produced in Si+Au and Au+Au collisions at AGS energies. These calculations are performed in a simple coalescence model, which yields a consistent description of the strange cluster (d, [sup 3]HE, [sup 3]H, [sup 4]He) production at these energies. If a doubly strange, weakly bound [Lambda][Lambda] dibaryon exists, we find that it is produced rather copiously in Au+Au collisions, with dN/dy [approximately]0.1 at raid-rapidity. If one adds another non-strange or strange baryon to a cluster, the production rate decreases by roughly one or two orders of magnitude, respectively. For instance, we predict that the hypernucleus [sub [Lambda][Lambda]][sup 6]He should have dN/dy [approximately]5 [times] 10[sup [minus]6] for Au+Au central collisions. It should be possible to measure the successive [Lambda] [yields] p[pi][minus] weak decays of this object. We comment on the possibility that conventional multi-strange hypernuclei may serve as doorway states'' for the production of stable configurations of strange quark matter, if such states exist.
Strange Cluster Formation in Relativistic Heavy Ion Collisions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
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.
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
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.
Cluster Production in Relativistic Heavy Ion Collisions
Author: Martin Charles Sarabura
Publisher:
ISBN:
Category :
Languages : en
Pages : 892
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 892
Book Description
Neutral Strange Particle Production in Ultra - Relativistic Heavy Ion Collisions at [square Root Of][superior S]NN
Author: Matthew Allan Charles Lamont
Publisher:
ISBN:
Category :
Languages : en
Pages : 152
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 152
Book Description
Multi-strange Hyperon Production in Relativistic Heavy -ion Collisions
Strangeness Production in Heavy Ion Collisions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 15
Book Description
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.
Publisher:
ISBN:
Category :
Languages : en
Pages : 15
Book Description
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.
Quark--Gluon Plasma 3
Author: Rudolph C. Hwa
Publisher: World Scientific
ISBN: 9812795537
Category : Science
Languages : en
Pages : 786
Book Description
Annotation. Text reviews the major topics in Quark-Gluon Plasma, including: the QCD phase diagram, the transition temperature, equation of state, heavy quark free energies, and thermal modifications of hadron properties. Includes index, references, and appendix. For researchers and practitioners.
Publisher: World Scientific
ISBN: 9812795537
Category : Science
Languages : en
Pages : 786
Book Description
Annotation. Text reviews the major topics in Quark-Gluon Plasma, including: the QCD phase diagram, the transition temperature, equation of state, heavy quark free energies, and thermal modifications of hadron properties. Includes index, references, and appendix. For researchers and practitioners.
Aspects of Strangeness
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 14
Book Description
We review various aspects of strangeness production in relativistic heavy ion collisions from AGS to CERN energies. The experimental data are briefly summarized and various possible theoretical interpretations of these data are evaluated, such as quark-gluon- plasma (QGP), hadron gas (HG) thermal models, or event generators (cascade models). Some comments on the production of strange clusters are offered.
Publisher:
ISBN:
Category :
Languages : en
Pages : 14
Book Description
We review various aspects of strangeness production in relativistic heavy ion collisions from AGS to CERN energies. The experimental data are briefly summarized and various possible theoretical interpretations of these data are evaluated, such as quark-gluon- plasma (QGP), hadron gas (HG) thermal models, or event generators (cascade models). Some comments on the production of strange clusters are offered.
Strangeness Production in Relativistic Nuclear Collisions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 17
Book Description
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.
Publisher:
ISBN:
Category :
Languages : en
Pages : 17
Book Description
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.