The K/pi ratio and the lifespan of the fireball

Details The K/pi ratio and the lifespan of the fireball The K/pi ratio and the lifespan of the fireball

2006-10-30

arxiv.org/abs/nucl-th/0610122v1

PoSCPOD2006:023,2006

Physics

Nuclear Physics

Nuclear Theory

proceedings of International workshop on Critical Point and Onset of Deconfinement, Florence, July 3-6, 2006

Scientific paper

We construct a hadronic kinetic model for description of excitation functions of multiplicity ratios K+/pi+, K-/pi-, and Lambda/pi. It is shown that the model is able to describe data rather well under the assumption that the total lifespan of the fireball is decreasing function of the collision energy for SPS energies above 30 AGeV. Thus in order to identify the onset of deconfinement the proposed model will have to be checked against other kinds of data until hadronic description can be safely falsified.

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