Abstract
One of the future goals of the LHC is to precisely measure the properties of the Higgs boson. The associated production of a Higgs boson and top quark pair is a promising process to investigate the related Yukawa interaction and the properties of the Higgs. Compared with the pure scalar sector in the Standard Model, the Higgs sector contains both scalars and pseudoscalars in many new physics models, which makes the tt̄H interaction more complex and provides a variety of phenomena. To investigate the tt̄H interaction and the properties of the Higgs, we study the top quark spin correlation observables at the LHC.
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