FlexibleDecay: An automated calculator of scalar decay widths

Wojciech Kotlarski

(NCBJ, Warsaw)

Room 2.8.3, IST, Physics Dept.
Wednesday, March 9th, 2022 at 02:30 PM


I will present FlexibleDecay, a tool to calculate decays of scalars in an arbitrary BSM model. The tool aims for high precision particularly in the case of Higgs boson decays. In the case of scalar and pseudoscalar Higgs boson decays the known higher order SM QED, QCD and EW effects are taken into account where possible. The program works in a modified MSbar scheme that exhibits a decoupling property with respect to heavy BSM physics, with BSM parameters themselves treated in the MSbar/DRbar-scheme allowing for an easy connection to high scale tests for, e.g., perturbativity and vacuum stability, and the many observable calculations readily available in MSbar/DRbar programs. Pure BSM effects are taken into account at the leading order, including all one-loop contributions to loop-induced processes. The program is implemented as an extension to FlexibleSUSY, which determines the mass spectrum for arbitrary BSM models, and does not require any extra configuration from the user.

Zoom link (Seminar slides)
[The seminar will be recorded]

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With support from FCT through project UIDB/00777/2020

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