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[en] We have calculated the two-loop strong interaction corrections to the chargino pole masses in the DR' scheme in the minimal supersymmetric standard model with complex parameters. We have performed a detailed numerical analysis for a particular point in the parameter space and found corrections of a few tenths of a percent. We provide a computer program that calculates chargino and neutralino masses with complex parameters up to O(ααS). (orig.)
Journal
European Physical Journal. C; ISSN 1434-6044; 
; v. 53(4); p. 621-626
; v. 53(4); p. 621-626
[en] The possibility of a resummation procedure in order to cure the UV/IR-mixing problem of noncommutative field theories is discussed. The method is presented for a scalar φ4 theory on Euclidean space. Finally, we sketch the idea of resummation for U(1)-gauge theories. (author)
Journal
Czechoslovak Journal of Physics; ISSN 0011-4626; ; v. 54(7); p. 711-719
; v. 54(7); p. 711-719
[en] We have calculated the two-loop strong interaction corrections to the neutralino pole masses in the DR-bar'-scheme in the Minimal Supersymmetric Standard Model (MSSM). We have performed a detailed numerical analysis for a particular point in the parameter space and found corrections of a few tenths of a percent. We agree with previously derived analytic formulae for two-loop corrections to fermion masses
Journal
[en] We have calculated the leading Yukawa corrections to the chargino, neutralino and gluino pole masses in the DR-bar scheme in the minimal supersymmetric Standard Model (MSSM) with the full set of complex parameters. We have performed a numerical analysis for a particular point in the parameter space and found typical corrections of a few tenths of a percent thus exceeding the experimental resolution as expected at the ILC. We provide a computer program which calculates two-loop pole masses for SUSY fermions with complex parameters up to O(ααS,Y4,αSY2)
Journal
[en] Quantum corrections to the magnetic central charge of the monopole in N=4 supersymmetric Yang-Mills theory are free from the anomalous contributions that are crucial for BPS saturation of the two-dimensional supersymmetric kink and the N=2 monopole. However, these quantum corrections are nontrivial and they require infinite renormalization of the supersymmetry current, central charges, and energy-momentum tensor, in contrast to N=2 and even though the N=4 theory is finite. Their composite-operator renormalization leads to counterterms which form a multiplet of improvement terms. Using on-shell renormalization conditions the quantum corrections to the mass and the central charge then vanish both, thus verifying quantum BPS saturation
Journal
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