2007/10/31 by David Eriksson, G. Ingelman, Gunnar Ingelman +2
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1088/1126-6708/2008/01/024
published as JHEP0801:024,2008 · 28 pages, 13 figures. Uses JHEP format
arxiv created 2007/10/31 · openalex publication_date 2008/01/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
To properly discover a charged Higgs Boson (H^±) requires its spin and couplings to be determined. We investigate how to utilize \ttbar spin correlations to analyze the H^± couplings in the decay t→ bH+→ bτ+ντ. Within the framework of a general Two-Higgs-Doublet Model, we obtain results on the spin analyzing coefficients for this decay and study in detail its spin phenomenology, focusing on the limits of large and small values for tanβ. Using a Monte Carlo approach to simulate full hadron-level events, we evaluate systematically how the H^±→τ^±ντ decay mode can be used for spin analysis. The most promising observables are obtained from azimuthal angle correlations in the transverse rest frames of t(t). This method is particularly useful for determining the coupling structure of H^± in the large tanβ limit, where differences from the SM are most significant.