Faculty of Physics - University of Bucharest

UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2024-11-22 1:31

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Conference: Bucharest University Faculty of Physics 2003 Meeting

Section: Nuclear and Elementary Particles Physics

Title:

Effective mass distributions for protons, pions and kaons particle combinations (two and three hadrons) for Au-Au reactions at 200AGeV center of mass energy

Authors:

C. Besliu*, Al. Jipa*, I. S. Zgura**, D. Felea**, C. Ristea**, Oana Ristea*, Elena Stefan**

Affiliation:

* Faculty of Physics, University of Bucharest, ROMANIA

** Institute of Space Science, Bucharest-Magurele, ROMANIA

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Keywords:

Abstract:

A preliminary analysis of the effective mass distributions for two and three hadronic combinations including protons, pions and kaons is presented for a number of 798000 Au-Au reactions at 200 AGeV center of mass energy collected by the BRAHMS Collaboration (RHIC-Brookhaven National Laboratory). Different procedures to detect the classical resonances inside the high level of background were used. Comparisons with simulations of experimental data using UrQMD code are given, too. The strong suppresion of the hadronic resonances weights (delta resonance, N*, K*, rho, etc.) could suggest a possible quark-gluon state.