Published May 2011
| Version v1
Journal article
Proton-Λ correlations in central Pb+Pb collisions at √(sNN)=17.3 GeV
Creators
- 1. Rudjer Boskovic Institute, Zagreb (Croatia)
- 2. Joint Institute for Nuclear Research, Dubna (Russian Federation)
- 3. KFKI Research Institute for Particle and Nuclear Physics, Budapest (Hungary)
- 4. H. Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, Cracow (Poland)
- 5. Fachbereich Physik der Universitaet, Frankfurt (Germany)
Description
The momentum correlation between protons and Λ particles emitted from central Pb+Pb collisions at √(sNN)=17.3 GeV was studied by the NA49 experiment at the CERN Super Proton Synchrotron. A clear enhancement is observed for small relative momenta (qinv<0.2 GeV). By fitting a theoretical model, which uses the strong interaction between the proton and the Λ in a given pair, to the measured data, a value for the effective source size is deduced. Assuming a static Gaussian source distribution, we derive an effective radius parameter of RG=3.02±0.20(stat.)-0.16+0.44(syst.) fm.
Additional details
Identifiers
- DOI
- 10.1103/PhysRevC.83.054906;
- arXiv
- arXiv:1103.3395v1;
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 83
- Journal Issue
- 5
- Journal Page Range
- p. 054906-054906.7
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 42094312
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- ATOM-ATOM COLLISIONS; CERN SPS SYNCHROTRON; CORRELATIONS; DISTRIBUTION; GEV RANGE 10-100; LAMBDA PARTICLES; PROTONS; SIMULATION; STRONG INTERACTIONS
- Descriptors DEC
- ACCELERATORS; ATOM COLLISIONS; BARYONS; BASIC INTERACTIONS; COLLISIONS; CYCLIC ACCELERATORS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; HYPERONS; INTERACTIONS; LAMBDA BARYONS; NUCLEONS; STRANGE PARTICLES; SYNCHROTRONS
Optional Information
- Notes
- (c) 2011 American Institute of Physics
- Collaborations
- NA49 Collaboration