Covariant description of kinetic freeze out through a finite time-like layer

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The Freeze Out (FO) problem is addressed for a covariant FO probability and a finite FO layer with a time-like normal vector continuing the line of studies introduced in Ref. [1]. The resulting post FO momentum distribution functions are presented and discussed. We show that in general the post FO distributions are non-thermal and asymmetric distributions even for time-like FO situations.
10 pages, 12 figures, major rewrite with changed content, corrected typos and new references added

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