Flavor changing scalar couplings and $tγ(Z)$ production at hadron colliders

Details Flavor changing scalar couplings and $tγ(Z)$ production at hadron colliders Flavor changing scalar couplings and $tγ(Z)$ production at hadron colliders

2005-01-15

arxiv.org/abs/hep-ph/0501131v1

J.Phys. G31 (2005) 401-408

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages,5 figures

Scientific paper

10.1088/0954-3899/31/5/010

We calculate the contributions of the flavor changing scalar ($FCS$) couplings arised from topcolor-assisted technicolor ($TC2$) models at tree-level to the $t\gamma$ and $tZ$ production at the Tevatron and $LHC$ experiments. We find that the production cross sections are very small at the Tevatron with $\sqrt{s}=1.96TeV$, which is smaller than 5 fb in most of the parameter space of $TC2$ models. However, the virtual effects of the $FCS$ couplings on the $t\gamma(Z)$ production can be easily detected at the $LHC$ with $\sqrt{s}=14TeV$ via the final state $\gamma l\bar{\nu}b$ ($l^{+}l^{-}l\bar{\nu}b$).

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