The process $e^{+}{e}^{-}\to b\bar{b}{W}^{+}{W}^{-}$ at the Next Linear Collider in the Minimal Supersymmetric Standard Model

Abstract

The complete matrix element for $e^{+}{e}^{-}\to b\bar{b}{W}^{+}{W}^{-}$ is 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 study: - $t\bar{t}$ production and decay $t\bar{t}\text{ar}(b{W}^{+})(\bar{b}{W}^{-})$; - $ZH$ production followed by $Z\text{ar}b\bar{b}$ and $H\text{ar}{W}^{+}{W}^{-}$; - $AH$ production followed by $A\text{ar}b\bar{b}$ and $H\text{ar}{W}^{+}{W}^{-}$; - $h{W}^{+}{W}^{-}$ production followed by $h\text{ar}b\bar{b}$. Top and Higgs finite width effects are included, as well as all those of the irreducible backgrounds.

Comments: 43 pages, latex, 20 PostScript figures included, complete file and full resolution figures available at ftp://axpa.hep.phy.cam.ac.uk/moretti or at http://www.hep.phy.cam.ac.uk/theory/papers/