Search for charged massive long-lived particles
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Date
2012
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American Physical Society
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Abstract
We report on a search for charged massive long-lived particles (CMLLPs), based on $5.2 \text{fb}^{−1}$ 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 gauginolike 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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Keywords
Collider, Fermilab Tevatron, Integrated luminosity, The standard model, Energy dissipation, High energy physics
Citation
Abazov, V. M., Abbott, B., Acharya, B. S., Adams, M., Adams, T., Alexeev, G. D., . . . Zivkovic, L. (2012). Search for charged massive long-lived particles. Physical Review Letters, 108(12). 121802. http://dx.doi.org/10.1103/PhysRevLett.108.121802
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© 2012 American Physical Society.
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Article