Precision Observables in the MSSM: Leading Electroweak Two-loop Corrections
| dc.creator | Heinemeyer, S. | |
| dc.creator | Weiglein, G. | |
| dc.date | 2001-02-26 | |
| dc.date.accessioned | 2026-07-07T03:43:59Z | |
| dc.date.available | 2026-07-07T03:43:59Z | |
| dc.description | The leading electroweak MSSM two-loop corrections to the $ρ$-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. | |
| dc.description | 13 pages, 6 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0102317 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0102317 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/40436 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Precision Observables in the MSSM: Leading Electroweak Two-loop Corrections | |
| dc.type | text |