Search for charged massive long-lived particles with the D0 detector

TL;DR

This paper reports a search for charged long-lived particles using the D0 detector, setting upper limits on production cross sections and lower mass bounds, but finds no evidence of such particles in the analyzed data.

Contribution

First search for charged long-lived particles at the Tevatron using time-of-flight data, establishing new cross section limits and mass bounds.

Findings

No evidence of long-lived charged particles was observed.

Set upper limits on production cross sections for staus, gaugino-like, and higgsino-like charginos.

Established lower mass limits of 206 GeV for gauginos and 171 GeV for higgsinos.

Abstract

We search for charged massive long-lived particles using 1.1 fb$^{-1}$ of data collected by the D0 detector at the Fermilab Tevatron $p\bar{p}$ Collider. Time-of-flight information is used to search for pair produced long-lived tau sleptons, gaugino-like charginos, and higgsino-like charginos. We find no evidence of a signal and set 95% C.L. cross section upper limits for staus, which vary from 0.31pb to 0.04pb for stau masses between 60 GeV and 300 GeV. We also set lower mass limits of 206 GeV (171 GeV) for pair produced charged gauginos (higgsinos).