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Searches for the $t^\prime$ of a fourth family · Around

2011

Searches for the $t^\prime$ of a fourth family

Holdom, Bob, Yan, Qi-Shu

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We study the detection of the $t^\prime$ of a fourth family during the early running of LHC with 7 TeV collision energy and 1 fb$^{-1}$ integrated luminosity.

By use of a neural network we show that it is feasible to search for the $t'$ even with a mass close to the unitarity upper bound, which is in the 500 to 600 GeV range.
We also present results for the Tevatron with $10 \,\, \textrm{fb}^{-1}$.
In both cases the search for a fourth family quark doublet can be significantly enhanced if one incorporates the contribution that the $b'$ can make to a $t'$-like signal.

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