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arXiv · 1304.5551

Probing top anomalous couplings at the LHC with trilepton signatures in the single top mode

Jean-Laurent Agram·Jeremy Andrea·Eric Conte·Benjamin Fuks·Denis Gelé·Pierre Lansonneur
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Abstract

We investigate trilepton final states to probe top anomalous couplings at the Large Hadron Collider. We focus on events originating from the associated production of a single top quark with a Z-boson, a channel sensitive to several flavor-changing neutral interactions of top and up/charm quarks. In particular, we explore a way to access simultaneously their anomalous couplings to Z-bosons and gluons and derive the discovery potential of trilepton final states to such interactions with 20 fb-1 of 8 TeV collisions. We show that effective coupling strengths of O(0.1-1) TeV-1 can be reached. Equivalently, branching fractions of top quarks into lighter quarks and gluons or Z-bosons can be constrained to be below O(0.1-1)%.

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Jean-Laurent Agram, Jeremy Andrea, Eric Conte, Benjamin Fuks, Denis Gelé, Pierre Lansonneur. 2013-06-27. Probing top anomalous couplings at the LHC with trilepton signatures in the single top mode. https://doi.org/10.1016/j.physletb.2013.06.052

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