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Systematics and mt-Scaling

Richard Witt
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Abstract

An enhancement in the number of strange particles produced in relativistic heavy ion collisions is expected to coincide with the formation of a deconfined state of partonic matter. Measurements of transverse momentum spectra for strange particles emerging from p+p collisions are used as a baseline to which similar measurements from heavy ion collisions are compared. In addition, several observations from p+p collisions, such as the variation of with particle mass and with event multiplicity, are interesting in their own right. We present measurements of the transverse momentum spectra and systematics for strange and non-strange particles from p+p collisions at sqrt{s}=200 GeV. We show the dependence of the on measured charged multiplicity and on particle mass. We will also demonstrate the ability to scale the transverse mass spectra of various species onto a single universal curve for our p+p data (an effect known as mt-scaling) and the failure of this scaling when applied to our Au+Au data. The work presented here was presented as a poster at Quark Matter 2004.

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Richard Witt. 2004-03-12. Systematics and mt-Scaling. https://arxiv.org/abs/nucl-ex/0403021

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