Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-02-26
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, 6 figures
Scientific paper
The leading electroweak MSSM two-loop corrections to the $\rho$-parameter are calculated. They are obtained by evaluating the two-loop self-energies of the Z and the W boson at O(Gf^2 m_t^4) in the limit of heavy scalar quarks. A very compact expression is derived, depending on the ratio of the CP-odd Higgs boson mass, M_A, and the top quark mass, m_t. Expressions for the limiting cases M_A >> m_t and M_A << m_t are also given. The decoupling of the non-SM contribution in the limit M_A -> oo is verified at the two-loop level. The numerical effect of the leading electroweak MSSM two-loop corrections is analyzed in comparison with the leading corrections of O(Gf^2 m_t^4) in the SM and with the O(alpha alpha_s) corrections in the MSSM.
Heinemeyer Sven
Weiglein Georg
No associations
LandOfFree
Precision Observables in the MSSM: Leading Electroweak Two-loop Corrections does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Precision Observables in the MSSM: Leading Electroweak Two-loop Corrections, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Precision Observables in the MSSM: Leading Electroweak Two-loop Corrections will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-612460