Associated production of Intermediate Higgs or Z-boson with $t \bar t$ pair in $γγ$ collision

Details Associated production of Intermediate Higgs or Z-boson with $t \bar t$ pair in $γγ$ collision Associated production of Intermediate Higgs or Z-boson with $t \bar t$ pair in $γγ$ collision

1992-11-17

arxiv.org/abs/hep-ph/9211262v1

Phys.Rev. D47 (1993) 3750-3756

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex(RevTex), 13 pages, 5 topdrawer figures (available on request)

Scientific paper

10.1103/PhysRevD.47.3750

Photon-photon linear colliders can be realized by laser back-scattering technique on the next generation linear $e^+e^-$ colliders. Here the associated productions of an intermediate mass Higgs (IMH) or Z-boson with $t \bar t$ pair in $\gamma\gamma$ collisions are studied. Since IMH is very unlikely to decay into $t\bar t$ pair, $t\bar tH$ production is the only direct channel to probe the Higgs-top Yukawa coupling in case of an IMH. $t\bar tZ$ production can be a potential background to $t\bar tH$ if the Higgs mass is close to $m_Z$. As an alternative to its parent $e^+e^-$ collider, $\gamma\gamma \to t\bar tH(Z)$ productions are compared with the corresponding productions in the $e^+e^-$ collisions.

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