$Zb\bar{b}$ Loop Correction with Charge 2/3 Singlet Quarks

Details $Zb\bar{b}$ Loop Correction with Charge 2/3 Singlet Quarks $Zb\bar{b}$ Loop Correction with Charge 2/3 Singlet Quarks

1996-06-26

arxiv.org/abs/hep-ph/9606436v1

Phys.Lett. B387 (1996) 544-550

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, uses latex. Three figures included

Scientific paper

We calculate the non-universal correction to the $Zb\bar{b}$ vertex in a
simple extension of the Standard Model, where a charge $+2/3$ isosinglet quark
is added to the standard spectrum. Comparison is made with other solutions to
$R_b$ (and $R_c$) that demand particles lighter than $M_W$.

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