K. Hidaka

Improved supersymmetric QCD corrections to Higgs boson decays into quarks and squarks

We improve the calculation of the supersymmetric

Atmospheric neutrino fluxes

O(\alpha_s)

τsleptons andτsneutrino in the minimal supersymmetric standard model with complex parameters

QCD corrections to the decays of Higgs bosons into quarks and squarks in the Minimal Supersymmetric Standard Model. In the on-shell renormalization scheme these corrections can be very large, which makes the perturbative expansion unreliable. This is especially serious for decays into bottom quarks and squarks for large

Test of lepton flavour violation at the LHC

\tan\beta

Top Squarks and Bottom Squarks in the MSSM with Complex Parameters

. Their corrected widths can even become negative. We show that this problem can be solved by a careful choice of the tree-level Higgs boson couplings to quarks and squarks, in terms of the QCD and SUSY QCD running quark masses, running trilinear couplings

SUSY - QCD corrections to top and bottom squark decays into Higgs bosons

A_q

QCD corrections to Higgs boson decays into squarks in the minimal supersymmetric standard model

, and on-shell left-right mixing angles of squarks. We also present numerical results for the corrected partial decay widths for the large

Impact of CP phases on stop and sbottom searches

\tan\beta

Impact of CP phases on the search for sleptons and

case.

SUSY QCD corrections to stop and sbottom decays into W+- and Z0 bosons

Abstract A detailed Monte Carlo simulation of neutrino fluxes of atmospheric origin is made taking into account the muon polarization effect on neutrinos from muon decay. There still remains a significant discrepancy between the calculated ( v e + v e ) ( v μ + v μ ) ratio and that observed by the Kamiokande group, which can be explained by three neutrino oscillations. However, the ratio evaluated at the Frejus site and the total event number calculated for IMB-1 show good agreement with the data. Comparing our result with the previous Monte Carlo calculation by Barr et al., we find that the two calculations agree within 20% for the magnitude of neutrino fluxes and 5% for the ( v e + v e ) ( v μ + v μ ) ratio.