Hairy magnetic and dyonic black holes in the Standard Model

Spherically symmetric magnetic and dyonic black holes with a magnetic charge Q = 2 are studied in the Standard Model and general relativity. A magnetically charged black hole with mass below 9.3 x 10(35) GeV has a hairy cloud of electroweak gauge and Higgs fields outside the event horizon with 1/m(W) in size. An extremal magnetic black hole has a hair mass of 3.6 TeV, while an extremal dyonic black hole has an additional mass of q(2) x 1.6 GeV for a small electric charge q << 2 pi /e(2). A hairy dyonic black hole with an integer charge is not stable and can decay into a magnetic one plus charged fermions. On the other hand, a hairy magnetic black hole can evolve via Hawking radiation into a nearly extremal one that is cosmologically stable and an interesting object to be searched for.

Automated summary

This study focuses on spherically symmetric magnetic and dyonic black holes within the Standard Model and general relativity. It is found that a magnetically charged black hole with mass below 9.3 x 10^35 GeV has a cloud of electroweak gauge and Higgs fields outside the event horizon. Additionally, a hairy dyonic black hole with an integer charge may decay into a magnetic black hole plus charged fermions.