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Article Dans Une Revue Physical Review Letters Année : 2012

Search for charged massive long-lived particles

V.M. Abazov
  • Fonction : Auteur
E. Kajfasz
P. Verdier

Résumé

We report on a search for charged massive long-lived particles (CMLLPs), based on 5.2 fb$^{-1}$ of integrated luminosity collected with the D0 detector at the Fermilab Tevatron $p\bar{p}$ collider. We search for events in which one or more particles are reconstructed as muons but have speed and ionization energy loss $(dE/dx)$ inconsistent with muons produced in beam collisions. CMLLPs are predicted in several theories of physics beyond the standard model. We exclude pair-produced long-lived gaugino-like charginos below 267 GeV and higgsino-like charginos below 217 GeV at 95% C.L., as well as long-lived scalar top quarks with mass below 285 GeV.
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Dates et versions

in2p3-00632979 , version 1 (20-09-2023)

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V.M. Abazov, F. Badaud, U. Bassler, G. Bernardi, M. Besançon, et al.. Search for charged massive long-lived particles. Physical Review Letters, 2012, 108, pp.121802. ⟨10.1103/PhysRevLett.108.121802⟩. ⟨in2p3-00632979⟩
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