K/pi Fluctuations at relativistic energies.
Phys Rev Lett
; 103(9): 092301, 2009 Aug 28.
Article
em En
| MEDLINE
| ID: mdl-19792791
ABSTRACT
We report K/pi fluctuations from Au + Au collisions at sqrt[s(NN)]= 19.6, 62.4, 130, and 200 GeV using the STAR detector at the Relativistic Heavy Ion Collider. K/pi fluctuations in central collisions show little dependence on incident energy and are on the same order as those from NA49 at the Super Proton Synchrotron in central Pb + Pb collisions at sqrt[s(NN)]=12.3 and 17.3 GeV. We report results for the collision centrality dependence of K/pi fluctuations and results for charge-separated fluctuations. We observe that the K/pi fluctuations scale with the charged particle multiplicity density.
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MEDLINE
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En
Ano de publicação:
2009
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Article