Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-04-28
Phys.Rev.D52:3803,1995; Erratum-ibid.D53:1725,1996
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, plain TeX; 6 figures available upon request from arndb@axpwb.physik.rwth-aachen.de
Scientific paper
10.1103/PhysRevD.52.3803 10.1103
We investigate for two-Higgs doublet models with intrinsic CP violation in the scalar potential CP-nonconserving effects in unpolarized $\gamma \gamma \rightarrow t \bar{t} $ for a range of neutral Higgs boson masses which includes resonant $\varphi$ production and the subsequent decay of $\varphi \rightarrow t \bar{t}$. The importance of taking into account, even in the resonant case, the interference with the nonresonant background is shown. Further, we propose and calculate three asymmetries which efficiently trace CP-violating effects in $\gamma \gamma \rightarrow t \bar{t} $ using semileptonic $t \bar{t}$ decays.
Anlauf Harald
Bernreuther Werner
Brandenburg Axel
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