The WA97 and NA57 experiments

 

Study of strange and multi-strange baryon production in lead-lead collisions

 
 

Experiment information:

 
Introduction and physics motivation
Specifications of the experiment
Layouts and photos
Experimental measurements
 

NA57 Contacts:

 
Spokesperson:
Federico Antinori
Contact person:
Vito Manzari
Contact person:
Emanuele Quercigh
 
Institute list
Author list
 

Links:

 
CERN for the general public
An introduction to heavy-ion collisions from the ALICE pages
The ALICE experiment
 

Sulphur beam experiments:

 
WA94
WA85
 
 
 

Main experimental results:

Strangeness enhancement grows with the strangeness of the produced hadron.
Up to a factor 20 for the Omega baryons!

Click on pictures to obtain bigger version with more detailed information (including numerical values)

 
 

Strangeness enhancements


Production of particles carrying 1, 2 and 3 units of strangeness is measured as a function of event centrality.
   
 
   

Energy dependence


NA57 Λ, Ξ and Ω yields measured at 40 A GeV/c and 160 A GeV/c lead-lead interactions.
 
 
 

Nuclear modification factors


Nuclear modification factors is an efficient way to display distinctions between nuclear medium effects and plain superpositions of nucleon-nucleon collisions.
   
 
  Please see the publications page for our most recent results
 
 
  Publications Internal pages (password protected)
 

Last updated 01/09/2006 by Håvard Helstrup