The W-Z-Top Bags

Understand

We discuss a new family of multi-quanta bound states in the Standard Model, which exist due to the mutual Higgs-based attraction of the heaviest members of the SM, namely, gauge quanta $W,Z$ and (anti)top quarks, $\bar t, t $.

• We use a self-consistent mean-field approximation, up to a rather large particle number $N$.
• In this paper we do not focus on weakly-bound, non-relativistic bound states, but rather on "bags" in which the Higgs VEV is significantly modified/depleted.
• The minimal number $N$ above which such states appear strongly depends on the ratio of the Higgs mass to the masses of $W,Z,\bar{t}, t $: For a light Higgs mass $m_H \sim 50\, GeV$ bound states start from $N\sim O(10)$, but for a "realistic" Higgs mass, $m_H\sim 100\, GeV$, one finds metastable/bound $W,Z$ bags only for $N\sim O(1000)$.