Search for Charged Massive Long-Lived Particles

Authors

V. M. Abazov, Joint Institute for Nuclear Research, Dubna, Russia
Kenneth A. Bloom, University of Nebraska-LincolnFollow
Daniel R. Claes, University of Nebraska-LincolnFollow
Kayle DeVaughan, University of Nebraska-Lincoln
Aaron Dominguez, University of Nebraska-LincolnFollow
Michael Eads, University of Nebraska-LincolnFollow
Ioannis Katsanos, University of Nebraska-LincolnFollow
Sudhir Malik, University of Nebraska-LincolnFollow
Gregory Snow, University of Nebraska-LincolnFollow

Date of this Version

2012

Citation

PHYSICAL REVIEW LETTERS 108, 121802 (2012); DOI: 10.1103/PhysRevLett.108.121802

Comments

Copyright 2012 American Physical Society

Abstract

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 pp̅ 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 gauginolike charginos below 267 GeV and Higgsino-like charginos below 217 GeV at 95% C.L., as well as longlived scalar top quarks with mass below 285 GeV.