Showing papers by "Giovanni Darbo published in 1993"
TL;DR: In this paper, a study of the meson resonances View the MathML source in hadronic decays of the Z0 is presented, where the measured mean meson multiplicity per hadronic event is 0.83 ± 0.14.
33 citations
TL;DR: In this paper, the authors used the Nachtmann Reiter angle θNR* and the opening angle of the two least energetic jets to determine the contribution of the triple-gluon vertex.
Abstract: From the combined data of 1990 and 1991 of the DELPHI experiment at LEP, 13057 4-jet events are obtained and used for determining the contribution of the triple-gluon vertex. The relevant variables are the generalized Nachtmann Reiter angle θNR* and the opening angle of the two least energetic jets. A fit to their two-dimensional distribution yields
$$C_A /C_F = 2.12 \pm 0.35 and N_C /N_A = 0.46 \pm 0.19,$$
whereCA/CF is the ratio of the coupling strength of the triple-gluon vertex to that of gluon bremsstrahlung from quarks, andNC/NA, the ratio of the number of quark colours to the number of gluons.
20 citations
01 Jan 1993
3 citations