First aid for "ripped" tree?

[AMumInScotland]

Our lovely little rowan tree - we put it in a few years ago and it's been doing really well - has been ripped in two by the wind . It divided into two branches a few feet up, and one has torn away, though it's still attached at the bottom of the rip IYSWIM.

Anyway - any suggestions what I should do to help it to heal up nicely? If it was flesh, I'd put the torn bit back in place over the "wound" and bandage it up, but I don't know if that's good or bad for trees. Would I be better just to cut the broken branch off completely and leave it open to the air, cut the broken one above the wound and put the torn bit back in place, or what?

TIA

Hi, I dont know for sure, but I remember being taught that to create a 'different' plant you would make a cut and graft the new piece of tree into the cut and tape or bandage it on and it would grow as part of the existing tree (i.e. red apples onto a green apple tree) so it should work if you strap it all back together quick enough so that it doesnt dry out - i've seen similar done with protected trees where they have been bolted together and survived. I would give it a go hope you save your lovely tree