Speaker
Description
It is demonstrated that the use of the higher covariant derivative regularization reveals some interesting features of quantum corrections in supersymmetric theories. In particular, it allows proving some all-loop exact relations between the renormalization group functions. For instance, in some supersymmetric theories the renormalization group behavior of the gauge and Yukawa couplings is restricted by certain constraints. Such a relation takes place in N=1 SQCD+SQED, where two gauge couplings do not run independently. Namely, it is possible to construct from them a certain combination which is a renormalization group invariant. It is also demonstrated that two similar invariants can be constructed for MSSM from the gauge and Yukawa couplings.
| Тематическая секция | Физика за пределами Стандартной модели |
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