Strangelet Search in AuAu Collisions at 200 GeV

Abstract

We have searched for strangelets in a triggered sample of 61 million central (top 4%) Au+Au collisions at $\sNN = 200 $GeV near beam rapidities at the STAR detector. We have sensitivity to metastable strangelets with lifetimes of order $\ge 0.1ns$, in contrast to limits over ten times longer in AGS studies and longer still at the SPS. Upper limits of a few 10^{-6} to 10^{-7} per central Au+Au collision are set for strangelets with mass ${}_{\sim }^{>}30$ GeV/c^{2}.

As published

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• Strangelets as Cosmic Rays beyond the Greisen-Zatsepin-Kuzmin Cutoff
• Search for anomalously heavy isotopes of helium in the Earth's atmosphere
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