Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-01-22
Phys.Rev.D80:015010,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
32 pages, 11 figures
Scientific paper
10.1103/PhysRevD.80.015010
We study double Higgs production in photon-photon collisions as a probe of the new dynamics of Higgs interactions in the framework of two Higgs Doublet Models. We analyze neutral Higgs bosons production and decay in the fusion processes, $\gamma \gamma \to S_iS_j$, $S_i=h^0, H^0, A^0$, and show that both $h^0h^0$ and $A^0A^0$ production can be enhanced by threshold effects in the region $E_{\gamma\gamma}\approx 2 m_{H\pm}$. Resonant effects due to the heavy Higgs, $H^0$, can also play a role in the cross section enhancement when it is allowed to decay to two light CP-even $h^0$ or to two light CP-odd $A^0$ scalars. We have scanned the allowed parameter space of the Two Higgs Doublet Model and found a vast region of the parameter space where the cross section is two orders of magnitude above the Standard Model cross section. We further show that the Standard Model experimental analysis can be used to discover or to constraint the two Higgs doublet model parameter space.
Arhrib Abdesslam
Benbrik Rachid
Chen Chuan-Hung
Santos Rui
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