Abundance of Delta Resonances in 58Ni+58Ni Collisions between 1 and 2 AGeV

Preprint

4 June 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.nucl-ex/9706001

Abstract

Charged pion spectra measured in 58Ni-58Ni collisions at 1.06, 1.45 and 1.93 AGeV are interpreted in terms of a thermal model including the decay of Delta resonances. The transverse momentum spectra of pions are well reproduced by adding the pions originating from the Delta-resonance decay to the component of thermal pions, deduced from the high transverse momentum part of the pion spectra. About 10 and 18% of the nucleons are excited to Delta states at freeze-out for beam energies of 1 and 2 AGeV, respectively.

Keywords

TRANSVERSE MOMENTUM
DELTA RESONANCES
58NI COLLISIONS
THERMAL MODEL
PION SPECTRA
COLLISIONS
PIONS
AGEV

All Related Versions

Version 1, 1997-06-04, ArXiv
Published version: Physics Letters B, 407 (2), 115.

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