Double top production at hadronic colliders

We calculate the contribution of anomalous top-quark interaction with a gluon, photon, and Z-boson (FCNC) to t t ̄ pair production in hadronic collisions. Using the current data from Run 1 of the Tevatron we evaluate the upper limit on the the anomalous coupling of t-quark with gluon, | κ g / Λ|≤0.5...

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Bibliographic Details
Published in:Physics letters. B 1999, Vol.457 (1), p.177-185
Main Authors: Gouz, Yu.P., Slabospitsky, S.R.
Format: Article
Language:English
Subjects:
FCNC
Hadronic production
Top quark
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Summary:We calculate the contribution of anomalous top-quark interaction with a gluon, photon, and Z-boson (FCNC) to t t ̄ pair production in hadronic collisions. Using the current data from Run 1 of the Tevatron we evaluate the upper limit on the the anomalous coupling of t-quark with gluon, | κ g / Λ|≤0.52 TeV −1. We examine the production of double top ( tt or t ̄ t ̄ ) at hadronic colliders as a result of FCNC interactions of the top quark. It is shown that the study of such reactions at LHC collider makes it possible to obtain the constraint on strength of coupling at the level of | κ g / Λ|≤0.09 TeV −1.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(99)00516-X