/ Experiment-HEP arXiv:0902.1266

Search for Long-Lived Massive Charged Particles in 1.96-TeV p anti-p Collisions

Published in: Phys.Rev.Lett.
Year: 2009
Vol.: 103
Page No: 021802
Pages: 16

Abstract: We performed a signature-based search for long-lived charged massive particles (CHAMPs) produced in 1.0 $\rm{fb}^{-1}$ of $\bar{p}p$ collisions at $\sqrt{s}=1.96$ TeV, collected with the CDF II detector using a high transverse-momentum ($p_T$) muon trigger. The search used time-of-flight to isolate slowly moving, high-$p_T$ particles. One event passed our selection cuts with an expected background of $1.9 \pm 0.2$ events. We set an upper bound on the production cross section, and, interpreting this result within the context of a stable scalar top quark model, set a lower limit on the particle mass of 249 GeV/$c^2$ at 95% C.L.

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