What can we learn from the Z → bbbar vertex?
Abstract
I stress the fact that a complete study of possible New Physics effects in the $Z \rightarrow b\bar{b}$ vertex requires a combined analysis of the ratio $R_b= \Gamma(Z \rightarrow b\bar{b})/ \Gamma(Z \rightarrow hadrons)$ and the longitudinally polarized forward backward asymmetry, $A_b$. This is illustrated with a number of models such as the two Higgsdoublet model, the MSSM, Technicolour and models with an extra $Z'$. The use of effective lagrangean techniques is briefly discussed.
 Publication:

'95 Electroweak Interactions Unified Theories
 Pub Date:
 1995
 arXiv:
 arXiv:hepph/9505439
 Bibcode:
 1995eiut.conf...49C
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 4 pages,no figures, to appear in Proc. of XXXth Rencontres de Moriond Les Arcs France