A Search for charged massive long-lived particles

Abazov, V.M.; Abbott, B.; Acharya, B.S.; Adams, M.; Adams, T.; Alexeev, G.D.; Alimena, J.; Alkhazov, G.; Alton, A.; Alverson, G.

doi:10.1103/PhysRevLett.108.121802

A Search for charged massive long-lived particles

D0

Collaboration

Oct, 2011

7 pages

Published in:

Phys.Rev.Lett. 108 (2012) 121802

e-Print:

1110.3302 [hep-ex]

DOI:

10.1103/PhysRevLett.108.121802

Report number:

FERMILAB-PUB-11-534-E

Experiments:

FNAL-E-0823

View in:

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reference search38 citations

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Abstract: (arXiv)

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.

Note:

submitted to Phys. Rev. Letters

13.85.Rm
14.80.Ly
ionization: energy loss
Batavia TEVATRON Coll
anti-p p: interaction
new particle: search for
supersymmetry
charged particle: massive
charged particle: long-lived
muon: final state

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