SSFB/CPP-06-02 TTP06-03 Multiloop Calculations: towards R at Order α
نویسندگان
چکیده
We discuss recent developments in multiloop calculations aiming eventually in computing the total cross section for e + e − annihilation into hadrons σ had in order O(α 4 s).
منابع مشابه
CPP - 06 - 08 TTP / 06 - 08 WUB / 06 - 03 Dimensional Reduction applied to QCD at three loops
Dimensional Reduction is applied to QCD in order to compute various renor-malization constants in the DR scheme at higher orders in perturbation theory. In particular, the β function and the anomalous dimension of the quark masses are derived to three-loop order. Special emphasis is put on the proper treatment of the so-called ε-scalars and the additional couplings which have to be considered.
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تاریخ انتشار 2006