Techniques for the SUSY-QCD corrections to pseudoscalar Higgs production via gluon fusion

27 Aug 2021, 17:00
20m
ZR2

ZR2

Electroweak, Top quark, and Higgs Physics Electroweak, Top quark, and Higgs Physics

Speaker

Thanh Tien Dat Nguyen (Karlsruhe Institute of Technology)

Description

We present the technical methods for the NLO SUSY-QCD corrections
to the production of the pseudoscalar MSSM Higgs boson in the gluon
fusion channel. While the genuine SUSY-QCD corrections have been cal-
culated in the limit of large SUSY particle masses some while ago, the
finite mass effects are unknown. In this talk, I will present the technical
details of our calculation of the NLO SUSY-QCD corrections including the
full mass dependence of the loop particle masses. Since analytic formulae
for the massive two-loop integrals of the virtual corrections are unknown
the calculation is performed numerically. The details of the computation
will be presented including the treatment of the threshold regions for nu-
merical stability by IBP methods. Our consistent renormalization scheme
worked out for the quark/squark sector and applied in the calculation will
be explained in detail.

Authors

Thanh Tien Dat Nguyen (Karlsruhe Institute of Technology) Dr Jens Spira Michael (Paul Scherrer Institute) Dr Liebler Stefan Rainer (KIT - Karlsruhe Institute of Technology (DE)) Lukas Fritz (Paul Scherrer Institut) Prof. Milada Margarete Mühlleitner (KIT - Karlsruhe Institute of Technology (DE))

Presentation materials