Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-10-02
Physics
High Energy Physics
High Energy Physics - Phenomenology
Poster presented at ICHEP08, Philadelphia, USA, July 2008. 3 pages, 2 eps figures; new conference template used
Scientific paper
It is suggested that there is a fine tuning principle remarkably arranging the top-quark Yukawa coupling to be just so as to make the mass $m_{12}$ of a bound state of 6 top + 6 anti-top quarks become very small. The value of the top Yukawa needed for Higgs and gluon etc. exchanges just binding the 12 quarks to make this mass zero is $g_t|_{m_{12}=0} =1.01 \pm 0.15$, while the experimental running top Yukawa coupling is $g_t = .94$.
Froggatt Colin D.
Nielsen Holger Bech
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