Research Papers in Physics and Astronomy


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Published by American Physical Society. Phys. Rev. Lett. 90, 131801 (2003). Copyright © 2003 American Physical Society. Permission to use.


We report a search for the production of long-lived charged massive particles in a data sample of 90 pb-1 of √s=1.8 TeV pp̅ collisions recorded by the Collider Detector at Fermilab. The search uses the muonlike penetration and anomalously high ionization energy loss signature expected for such a particle to discriminate it from backgrounds. The data are found to agree with background expectations, and cross section limits of ∂ (1) pb are derived using two reference models, a stable quark and a stable scalar lepton.

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