Large $p_t$ enhancement from freeze out

Details Large $p_t$ enhancement from freeze out Large $p_t$ enhancement from freeze out

1999-05-26

arxiv.org/abs/nucl-th/9905054v1

Phys.Lett. B459 (1999) 33-36

Physics

Nuclear Physics

Nuclear Theory

8 pages, 1 figure. Accepted for publication in Physics Letters B

Scientific paper

10.1016/S0370-2693(99)00666-8

Freeze out of particles across three dimensional space-time hypersurface is discussed in a simple kinetic model. The final momentum distribution of emitted particles, for freeze out surfaces with space-like normal, shows a non-exponential transverse momentum spectrum. The slope parameter of the $p_t$ distribution increases with increasing $p_t$, in agreement with recently measured SPS pion and $h^-$ spectra.

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