MASS LIMITS for Color Octet Charged Leptons (${{\mathit \ell}_{{8}}}$)

INSPIRE   PDGID:
S054CL
$\lambda $ ${}\equiv$ ${\mathit m}_{{{\mathit \ell}_{{8}}}}/{{\mathit \Lambda}}$
VALUE (GeV) CL% DOCUMENT ID TECN  COMMENT
$\bf{>86}$ 95 1
ABE
1989D
 CDF Stable ${{\mathit \ell}_{{8}}}$: ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit \ell}_{{8}}}{{\overline{\mathit \ell}}_{{8}}}$
• • We do not use the following data for averages, fits, limits, etc. • •
2
ABT
1993
H1 ${{\mathit e}_{{8}}}$: ${{\mathit e}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}_{{8}}}$ X
1  ABE 1989D look for pair production of unit-charged particles which leave the detector before decaying. In the above limit the color octet lepton is assumed to fragment into a unit-charged or neutral hadron with equal probability and to have long enough lifetime not to decay within the detector. The limit improves to 99 GeV if it always fragments into a unit-charged hadron.
2  ABT 1993 search for ${{\mathit e}_{{8}}}$ production via ${{\mathit e}}$-gluon fusion in ${{\mathit e}}{{\mathit p}}$ collisions with ${{\mathit e}_{{8}}}$ $\rightarrow$ ${{\mathit e}}{{\mathit g}}$ . See their Fig.$~$3 for exclusion plot in the ${\mathit m}_{{{\mathit e}_{{8}}}}--\Lambda $ plane for ${\mathit m}_{{{\mathit e}_{{8}}}}$ = $35 - 220$ GeV.
References:
ABT 1993
NP B396 3 A Search for Leptoquarks, Leptogluons and Excited Leptons in H1 at HERA
ABE 1989D
PRL 63 1447 Search for Heavy Stable Charged Particles in 1.8 TeV ${{\overline{\mathit p}}}{{\mathit p}}$ Collisions at the Fermilab Collider