Yukawa corrections to top pair production in photon-photon collision

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

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20 pages, 7 figures, This is the first one of a series of works and was submitted to Phys.Rev.D in Janury, 1996

Scientific paper

10.1103/PhysRevD.54.4662

The $O(\alpha m_t^2/m_W^2)$ Yukawa corrections to top pair production in photon-photon collision are calculated in the standard model (SM), the general two-Higgs-doublet model (2HDM) as well as the minimal supersymmetric model (MSSM). We found that the correction to the cross section can only reach a few percent in the SM, but can be quite significant ($>$10\%) in the 2HDM and MSSM for favorable parameter values, which may be observable at the high energy $e^+e^-$ colliders.

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