Speaker
Ms
Karina Williams
(IPPP, Physics Department, University of Durham)
Description
The analysis of the LEP results showed that, in parts of the MSSM parameter space
with non-zero complex phases, it's possible that a Higgs boson could have been as
light as 40 GeV and yet still have escaped detection. This region is dominated by the
Higgs cascade decay (h2 -> h1 + h1, where h1 is the lightest and h2 is the second
lightest neutral Higgs boson respectively). Full 1-loop results for this vertex are
presented and combined with 2-loop Higgs propagator corrections from the program
FeynHiggs. It is shown that, in this region of parameter space, these new vertex
corrections can increase the decay width by a factor of 50.
Author
Ms
Karina Williams
(IPPP, Physics Department, University of Durham)