Science-advisor
REGISTER info/FAQ
Login
username
password
     
forgot password?
register here
 
Research articles
  search articles
  reviews guidelines
  reviews
  articles index
My Pages
my alerts
  my messages
  my reviews
  my favorites
 
 
Stat
Members: 3643
Articles: 2'487'895
Articles rated: 2609

28 March 2024
 
  » arxiv » nucl-ex/0312022

 Article overview


Multistrange Hyperon Production in Pb+Pb collisions at 30, 40, 80 and 158 A$cdot$GeV
Michael Mitrovski ; for the NA49 collaboration ;
Date 29 Dec 2003
Journal Prog.Part.Nucl.Phys. 53 (2004) 269-272
Subject nucl-ex
AbstractA non-monotonic energy dependence of the $K^{+} / pi^{+}$ ratio with a sharp maximum close to 30 A$cdot$GeV is observed in central Pb+Pb collisions. Within a statistical model of the early stage, this is interpreted as a sign of the phase transition to a QGP, which causes a sharp change in the energy dependence of the strangeness to entropy ratio. This observation naturally motivates us to study the production of multistrange hyperons ($Xi$, $Omega$) as a function of the beam energy. Furthermore it was suggested that the kinematic freeze-out of $Omega$ takes place directly at QGP hadronization. If this is indeed the case, the transverse momentum spectra of the $Omega$ directly reflect the transverse expansion velocity of a hadronizing QGP. In this report we show preliminary NA49 results on $Omega^{-}$ and $ar{Omega}^{+}$ production in central Pb+Pb collisions at 40 and 158 A$cdot$GeV and compare them to measurements of $Xi^{-}$ and $ar{Xi}^{+}$ production in central Pb+Pb collisions at 30, 40, 80 and 158 A$cdot$GeV.
Source arXiv, nucl-ex/0312022
Services Forum | Review | PDF | Favorites   
 
Visitor rating: did you like this article? no 1   2   3   4   5   yes

No review found.
 Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

  Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser claudebot






ScienXe.org
» my Online CV
» Free


News, job offers and information for researchers and scientists:
home  |  contact  |  terms of use  |  sitemap
Copyright © 2005-2024 - Scimetrica