Eur. Phys. J. C (2006) 47: 207-217
https://doi.org/10.1140/epjc/s2006-02526-6

Theoretical Physics

Flavour-changing effects on e⁺e^-→Hbs̄,Hb̄s in the MSSM

¹ Max-Planck-Institut für Physik, Föhringer Ring 6, 80805, Munich, Germany
² Department of Physics, CERN-TH Division, 1211, Geneva 23, Switzerland

^* e-mail: hollik@mppmu.mpg.de

Received: 14 November 2005
Revised: 9 February 2006
Published online: 27 April 2006

Abstract

Flavour-changing effects originating from the exchange of scalar particles in the processes e⁺e^-→H^xbs̄,H^xb̄s, with H^x≡h⁰,H⁰,A⁰, are investigated in the minimal supersymmetric standard model with non-minimal flavour violation at the one-loop level. The dominating SUSY-QCD contributions with squark–gluino loops are calculated and discussed. We consider the SUSY scenario with non-minimal flavour mixing in the down-type squark-mass matrix. The flavour-changing cross sections are derived, and we discuss the dependence on the MSSM parameters and the strength of flavour mixing. The values for the cross section can reach 10^-4 pb for the production of the heavy Higgs boson H⁰ or A⁰, and only 10^-7 pb for the light Higgs boson h⁰. Non-decoupling behaviour occurs for both h⁰,H⁰ production in the case of a common heavy SUSY mass scale.