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

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arxiv 0902.1266 v3 pith:WRKLWZSP submitted 2009-02-07 hep-ex

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

classification hep-ex
keywords particlessearchchargedcollisionslong-livedmassivebackgroundbound
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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  1. Search for heavy long-lived charged particles with level-1 trigger scouting data from proton-proton collisions at $\sqrt{s}$ = 13.6 TeV

    hep-ex 2026-01 accept novelty 7.0

    A triggerless CMS dataset yields first low-speed heavy charged particle limits, excluding fiducial cross sections down to 3.5 fb.