Search for Stopped Gluinos from $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96-TeV
(2007) Physical Review Letters — Vol. 99 (2007)
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- et. al.
- Abstract
- Long-lived, colored, heavy particles are predicted in several models beyond the standard model of particle physics, one example being the gluino ($\tilde g$) in split supersymmetry. Some fraction of the hadronized gluinos can become charged and lose enough momentum through ionization to come to rest in dense particle detectors. Approximately 410 pb^-1 of p-pbar collisions at 1.96 TeV collected with the D0 detector during Run II of the Fermilab Tevatron collider are analyzed in search of such ``stopped gluinos'' decaying into a gluon and a neutralino ($\tilde{\chi}_1^0$), reconstructed as a jet and missing energy. No excess is observed above the expected backgrounds, and limits are placed on the (gluino cross section) $\times$ (probability to stop) $\times$ [BR($\tilde g$\rarrow$g\tilde{\chi}_1^0$)] as a function of the gluino and $\tilde{\chi}_1^0$ masses, for gluino lifetimes from 30 $\mu$s -- 100 hours.
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Citations
Tanasijczuk, A. J., D0, & et al. (2007). Search for Stopped Gluinos from $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96-TeV. Physical Review Letters, 99. https://doi.org/10.1103/PhysRevLett.99.131801 (Original work published 2007)