Search for Long-Lived Massive Charged Particles in 1.96 TeV $\bar{p}p}$ Collisions

Details Search for Long-Lived Massive Charged Particles in 1.96 TeV $\bar{p}p}$ Collisions Search for Long-Lived Massive Charged Particles in 1.96 TeV $\bar{p}p}$ Collisions

2009-02-07

arxiv.org/abs/0902.1266v3

Phys.Rev.Lett.103:021802,2009

Physics

High Energy Physics

High Energy Physics - Experiment

16 pages, 2 figures; Revision to fix PDF errors on some displays/printers

Scientific paper

10.1103/PhysRevLett.103.021802

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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