The processes $\bf {e^+e^-\rightarrow b\bar bW^\pm H^\mp}$ and $\bf {e^+e^-\rightarrow b\bar bH^+H^-}$ at the next linear collider in the minimal supersymmetric standard model

Stefano Moretti; Kosuke Odagiri

doi:doi:10.1007/s100520050112

EPJ

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2024 Impact factor 4.8

Particles and Fields

Eur. Phys. J. C 1, 633-647

The processes $\bf {e^+e^-\rightarrow b\bar bW^\pm H^\mp}$ and $\bf {e^+e^-\rightarrow b\bar bH^+H^-}$
at the next linear collider in the minimal supersymmetric
standard model

Stefano Moretti - Kosuke Odagiri

Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge, CB3 0HE, United Kingdom
(e-mail: moretti, odagiri@hep.phy.cam.ac.uk)

Received: 24 March 1997

Abstract
The complete matrix elements for $e^+e^-\rightarrow$ $b\bar bW^\pm H^\mp$ and $e^+e^-\rightarrow b\bar bH^+H^-$ are computed at tree-level within the Minimal Supersymmetric Standard Model. Rates of interest to phenomenological analyses at the Next Linear Collider are given. In particular, we analyse: (i) $t\bar t$ pair production followed by the top decays into $b\bar bW^\pm H^\mp$ and $b\bar b H^+H^-$ final states; (ii) H⁺H^- signals in which $H^\pm\rightarrow h W^{\pm} \rightarrow b\bar b W^{\pm}$ and $H^\pm\rightarrow tb\rightarrow b\bar b W^\pm$ . Top and Higgs finite width effects are included as well as all those due to the irreducible backgrounds.