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CP asymmetry in charged Higgs decays in the MSSM

Frank, Mariana
Turan, İsmail
We discuss and compare the charge-parity (CP) asymmetry in the charged Higgs boson decays H-->(u) over bar (i)d(j) for the second and third generation quarks in the minimal supersymmetric standard model. As part of the analysis, we derive some general analytical formulas for the imaginary parts of two-point and three-point scalar one-loop integrals and use them for calculating vectorial- and tensorial-type integrals needed for the problem under consideration. We find that, even though each decay mode has a potential to yield a CP asymmetry larger than 10%, further analysis based on the number of required charged Higgs events at colliders favors the (t) over barb, (c) over barb, and (c) over bars channels, whose asymmetry could reach 10%-15% in certain parts of the parameter space.