Charge Transfer Fluctuations as a Signal for QGP

Details Charge Transfer Fluctuations as a Signal for QGP Charge Transfer Fluctuations as a Signal for QGP

2005-03-08

arxiv.org/abs/hep-ph/0503085v1

Phys.Rev. C72 (2005) 034904

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 14 figures, to be submitted

Scientific paper

10.1103/PhysRevC.72.034904

In this work, the charge transfer fluctuation which was previously used for $pp$ collisions is proposed for relativistic heavy-ion collisions as a QGP probe. We propose the appearance of a local minimum at midrapidity for the charge transfer fluctuation as a signal for a QGP. Within a two-component neutral cluster model, we demonstrate that the charge transfer fluctuation can detect the presence of a QGP as well as the size of the QGP in the rapidity space. We also show that the forward-backward correlation of multiplicity can be a similarly good measure of the presence of a QGP. Further, we show that the previously proposed net charge fluctuation is sensitive to the existence of the second phase only if the QGP phase occupies a large portion of the available rapidity space.

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