https://doi.org/10.1051/epjconf/20134917010
Probing non-standard top-quark couplings via optimal-observable analyses at LHC
Institute of Theoretical Physics, University of Tokushima, Tokushima, 770-8502, Japan
a e-mail: hioki@ias.tokushima-u.ac.jp
b e-mail: ohkuma@fukui-ut.ac.jp
Focusing attention on top-quark pair production and its decay processes at the LHC, non-standard top-quark couplings are studied based on the effective Lagrangian constructed with SU(3)×SU(2)×U(1) invariant dimension-6 operators. The optimal-observable analysis is carried out for the charged-lepton distributions in pp → tt̅X → ℓ +X' (ℓ = e or μ) in order to estimate the expected statistical uncertainties in measurements of those non-standard tt̅g and tbW couplings that contribute to this process in the leading order.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.