VIRTUAL CORRECTIONS ON THE ZB(B)OVER-BAR VERTEX FROM CHARGED PGBS ANDTHE NEW ELECTROWEAK DATA

Authors
XIAO ZJ WAN LD LU GG YANG JM WANG XL GUO LP YUE CX
Citation
Zj. Xiao et al., VIRTUAL CORRECTIONS ON THE ZB(B)OVER-BAR VERTEX FROM CHARGED PGBS ANDTHE NEW ELECTROWEAK DATA, Journal of physics. G, Nuclear and particle physics, 20(6), 1994, pp. 901-910
Citations number
53
Categorie Soggetti
Physics, Particles & Fields","Physics, Nuclear
Journal title
Journal of physics. G, Nuclear and particle physics → ACNP
ISSN journal
09543899
Volume
20
Issue
6
Year of publication
1994
Pages
901 - 910
Database
ISI
SICI code
0954-3899(1994)20:6<901:VCOTZV>2.0.ZU;2-Z
Abstract
In the one-generation technicolour model, the one-loop virtual correct ions on the ZbbBAR vertex from the P+/- and P8+/- can be rather large; the shift deltaR(b) = (R(b) - R(b)SM)/R(b)SM is in the range of 0-9.6 % in the considered parameter space. By comparing the vertex correctio ns with the new electroweak data one can put some primary limits on th e mass of the colour octet P8+/-: m(p2) > 335 GeV (at 95% CL) for m(t) = 150 GeV.