Matching coefficients for αs and mb to O(αs2) in the MSSM

被引：34

作者：

Bauer, A. ^{[1
]}

Mihaila, L. ^{[1
]}

Salomon, J. ^{[1
]}

机构：

[1] Univ Karlsruhe TH, Karlsruhe Inst Technol KIT, Inst Theoret Teilchenphys, D-76128 Karlsruhe, Germany

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2009年 / 02期

关键词：

Supersymmetry Phenomenology; SOFT SUPERSYMMETRY-BREAKING; RENORMALIZATION-GROUP EQUATIONS; YUKAWA UNIFICATION; QCD CORRECTIONS; HIGGS SECTOR; QUARK; ELECTROWEAK; MASSES; REGULARIZATION; PREDICTIONS;

D O I：

10.1088/1126-6708/2009/02/037

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We compute the exact two-loop matching coefficients for the strong coupling constant alpha(s) and the bottom-quark mass m(b) within the Minimal Supersymmetric Standard Model (MSSM), taking into account O(alpha(2)(s)) contributions from Supersymmetric Quantum Chromodynamics (SQCD). We find that the explicit mass pattern of the supersymmetric particles has a significant impact on the predictions of alpha(s) and m(b) at high energies. Further on, the three-loop corrections exceed the uncertainty due to the current experimental accuracy. In case of the the running bottom-quark mass, they can reach in the large tan beta regime up to 30% of the tree-level value.

引用

页数：26

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