A novel analysis of the electroweak radiative corrections to e+ + e- --> f + fBAR, carried out in three different schemes, is presented. The first parametrizes the corrections in terms of G-mu, m(Z) and sin2-theta-W = 1 - m(W)2/m(Z)2 and employs recently proposed renormalized self-energies satisfying simple renormalization conditions. The second is parametrized in terms of m(Z) and the MSBAR couplings e2(m(Z)) and sin2-theta-W(m(Z)). The third introduces an effective gauge-invariant angle sin2-theta-W(eff). Compact formulae to evaluate the differential cross sections, partial widths and asymmetries are given. A numerical comparison is made of various predictions obtained on the basis of the first two schemes as well as on Hollik's formulation.
Degrassi, G., Sirlin, A. (1991). COMPARATIVE-ANALYSIS OF ELECTROWEAK CORRECTIONS TO E++E--]F+FBAR IN ON-SHELL AND MSBAR FRAMEWORKS. NUCLEAR PHYSICS. B, 352(2), 342-366 [10.1016/0550-3213(91)90446-5].
COMPARATIVE-ANALYSIS OF ELECTROWEAK CORRECTIONS TO E++E--]F+FBAR IN ON-SHELL AND MSBAR FRAMEWORKS
DEGRASSI, GIUSEPPE;
1991-01-01
Abstract
A novel analysis of the electroweak radiative corrections to e+ + e- --> f + fBAR, carried out in three different schemes, is presented. The first parametrizes the corrections in terms of G-mu, m(Z) and sin2-theta-W = 1 - m(W)2/m(Z)2 and employs recently proposed renormalized self-energies satisfying simple renormalization conditions. The second is parametrized in terms of m(Z) and the MSBAR couplings e2(m(Z)) and sin2-theta-W(m(Z)). The third introduces an effective gauge-invariant angle sin2-theta-W(eff). Compact formulae to evaluate the differential cross sections, partial widths and asymmetries are given. A numerical comparison is made of various predictions obtained on the basis of the first two schemes as well as on Hollik's formulation.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
