Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-07-28
Physics
High Energy Physics
High Energy Physics - Phenomenology
27 pages, 10 figures. To appear in ``Perspectives on Supersymmetry'' G.L. Kane editor, World Scientific, Singapore 1997
Scientific paper
We review the loop effects of the low energy supersymmetry. The global success of the Standard Model rises two related questions: how strongly the mass scales of the superpartners are constrained and can they be, nevertheless, indirectly seen in precision measurements. The bulk of the electroweak data is well screened from supersymmetric loop effects, due to the structure of the theory, even with superpartners generically light, $O(M_Z)$. The only exception are the left-handed squarks of the third generation which have to be $\simgt O(300$ GeV) to maintain the success of the SM. The other superpartners can still be light, at their present experimental mass limits, and would manifest themselves through virtual corrections to the small number of observables such as $R_b, b \to s\gamma, K^0-\bar K^0$ and $B^0-\bar B^0$ mixing and a few more for large $tan\beta$. Those effects require still higher experimental precision to be detectable.
Chankowski Piotr H.
Pokorski Stefan
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