Aug 23 – 28, 2010
Bonn
Europe/Berlin timezone

Stop and Sbottom Sector Renormalization in the Complex MSSM

Aug 27, 2010, 4:46 PM
15m
Gr. Hörsaal Mathematik (Bonn)

Gr. Hörsaal Mathematik

Bonn

Nussallee 12

Speaker

Sven Heinemeyer (IFCA (CSIC, Santander))

Description

Various renormalization schemes are defined, analyzed analytically and tested numerically in the decays Stop2 -> Sbot_i H+/W+ (i = 1,2). No scheme is found that produces numerically acceptable results over all the cMSSM parameter space, where problems occur mostly already for real parameters. Two schemes are identified that show the most robust behavior. A numerical analysis of the four partial stop} decay widths is performed in our ``preferred'' scheme, ``m_b, A_b DRbar''. The full one-loop corrections to the corresponding partial decay widths are evaluated including hard QED and QCD radiation. We find mostly modest corrections at the one-loop level.

Primary author

Sven Heinemeyer (IFCA (CSIC, Santander))

Presentation materials