2013/04/30 by Jean-Laurent Agram, Jeremy Andrea, J. Andreä +6 · 32 citations
Physics and Astronomy · #Boson #Collider #Coupling (piping) #Gluon #Hadron #High-Energy Particle Collisions Research #Large Hadron Collider #Nuclear physics #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #Quark #Quark–gluon plasma #Top quark #hep-ph
paper · pdf · doi:10.1016/j.physletb.2013.06.052
published in Physics Letters B 725(1-3), 123-126 (Elsevier BV) · 5 pages, 3 figures, 1 table; version accepted by PLB
arxiv created 2013/06/27 · openalex publication_date 2013/07/03 · arxiv updated 2013/07/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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)%.