Timelike transition form factor for CP-odd Higgs boson production
Timelike transition form factor for CP-odd Higgs boson production
We investigate the production of CP-odd Higgs boson A^0 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>A</mml:mi><mml:mn>0</mml:mn></mml:msup></mml:math> associated with a real \gamma <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>γ</mml:mi></mml:math> in e^+e^- <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mi>e</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:mrow></mml:math> collisions. Because of the properties of A^0 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>A</mml:mi><mml:mn>0</mml:mn></mml:msup></mml:math> coupling to the other fields, the main contribution comes from the top-quark triangle loop diagrams. …