6 research outputs found

    t.~ RENORMALIZATION SCHEMES: WHERE DO WE STAND?*

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    We consider t,he status of the current approaches to the application of the renormalization program to the standard SU?L x Ur theory from the standpoint of the int,erplay. of the scheme chosen for such an application and the attendant high-precision tests of the respective loop effects. We thus review the available schemes and discuss their theoretical relationships. We also show how such schemes stand in numerical relation t,o one another in the context of high-precision 2 ’ physics, as an illustration. As it is by now well-known, ’ a primary objective of the SLC/LEP 2 ’ physics program is to test the standard SUZL x Ur theory at a level below 1%. When one rea.ches the precision of O.l%, one is indeed at the level of the so-called electroweak quantum loop effects, so that these loop effects must be calculated in a precise way if this aspect o
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