The SUSY EW-like corrections to top pair production in photon-photon collisions

Abstract

We studied the one-loop contributions of the gaugino-Higgsino-sector to the process of top-pair production via $\gamma \gamma$ fusion at NLC in frame of the Minimal Supersymmetric Model(MSSM). We find that the corrections to $\gamma \gamma \to t\bar{t}$ and $e^{+}{e}^{-}\to \gamma \gamma \to t\bar{t}$ are found to be significant and can approach to a few percent and one percent, respectively. Furthermore, the dependences of the corrections on the supersymmetric parameters are also investigated. The corrections are not sensitive to $M_{SU(2)}$ (or $|\mu |$) when $M_{SU(2)}>>|\mu |$ (or $|\mu |>>M_{SU(2)}$) and are weakly dependent on the $\tan \beta$ with $M_Q$ (or $|\mu |$) being large enough. But they are sensitive to the c.m.s. energy of the incoming photons.

LaTex, 33 pages, 8 Eps figuers

References in corpus (6)

• Direct Measurement of the Top Quark Mass
• Measurement of the Top Quark Mass
• Measurement of the top quark mass and top-antitop production cross section from dilepton events at the Collider Detector at Fermilab
• Supersymmetric one-loop corrections to the process e^+e^- to f fbar
• Top quark pair production via polarized and unpolarized photons in Supersymmetric QCD
• CP Violation in $\gamma \gamma \to t\bar{t}$ within the Minimal Supersymmetric Standard Model

Cited by in corpus (4)

• High energy behaviour of gamma gamma to f f(bar) processes in SM and MSSM
• One-loop QCD and electroweak corrections to $t\bar{t}{Z}^0$ production at an $e^{+}{e}^{-}$ linear collider
• SUSY QCD impact on top-pair production associated with a $Z^0$-boson at a photon-photon collider
• R-parity violation effect on the top-quark pair production at linear colliders