Speaker
Yeo Woong Yoon
(Konkuk Univ.)
Description
We show that a pure resonance dip signal can arise in general due to imaginary interference term in a invariant mass distribution of heavy resonance search. The necessary and sufficient condition in which the pure resonance dip signal arises is described by two parameters $w/R$ and $\phi$, where $w$ is ratio of decay width to heavy resonance mass, $R$ and $\phi$ are relative signal strength and phase between the SM and new physics. We show that the pure resonance dip condition can be realized in heavy Higgses decays into $\gamma\gamma, ZZ$ and $t{\bar t}$ within 2HDM after they are produced via gluon fusion process. In addition, we discuss not only the pure resonance dip signal, several distinctive resonance shapes are also solely determined by $w/R$ and $\phi$. Those resonance shapes play important role for interpreting the observed resonance search data with provided invariant mass resolution.
Authors
Prof.
Jeonghyeon Song
(assistant professor)
Sunghoon Jung
Yeo Woong Yoon
(Konkuk Univ.)