Skip to Main content Skip to Navigation
Conference papers

Enhanced Strange Particle Yields - Signal of a Phase of Massless Particles ?

Abstract : The yields of strange particles are calculated with the UrQMD model for p,Pb(158 AGeV)Pb collisions and compared to experimental data. The yields are enhanced in central collisions if compared to proton induced or peripheral Pb+Pb collisions. The enhancement is due to secondary interactions. Nevertheless, only a reduction of the quark masses or equivalently an increase of the string tension provides an adequate description of the large observed enhancement factors (WA97 and NA49). Furthermore, the yields of unstable strange resonances as the Lambda_star(1520) resonance or the phi meson are considerably affected by hadronic rescattering of the decay products.
Document type :
Conference papers
Complete list of metadatas

http://hal.in2p3.fr/in2p3-00193956
Contributor : Dominique Girod <>
Submitted on : Wednesday, December 5, 2007 - 11:18:12 AM
Last modification on : Tuesday, February 11, 2020 - 1:16:04 PM

Links full text

Identifiers

Citation

Sven Soff, D. Zschiesche, M. Bleicher, Christoph Hartnack, M. Belkacem, et al.. Enhanced Strange Particle Yields - Signal of a Phase of Massless Particles ?. Strangeness 2000 International Conference on Strangeness in Quark Matter 5, Jul 2000, Berkeley, United States. pp.449-457, ⟨10.1088/0954-3899/27/3/324⟩. ⟨in2p3-00193956⟩

Share

Metrics

Record views

355