Name this pawn structure

It's just a minor line from the Queen's Gambit Accepted. It looks like it has unfavorable results.

If you just want the name of the PAWN STRUCTURE (not the variation) it's a Slav Jump Formation.

Sounds like Kmoch's name for the structure. Soltis (Pawn Structure Chess) and Flores (Chess Structures: A Grandmaster Guide) both call it more simply the Slav Formation. 

What would dis one be called?

I find Kmoch's terminology to be more precise. The term "Slav Jump Formation" makes it clear that this arrangement of Pawns is related to other Jump Formations such as French, Spanish, Caro-Kann, Orthodox, etc. All share the same span characteristics and all require similar liberation levers.

The terminology used by Soltis et al omits this important information.

Good point. I obviously need to go through Kmoch again, having last studied it in the 1990s. It was excellent then, and I would surely get more from it now.

I credit that book with adding roughly 200 points to my playing strength.

... not all at once, of course. As you point out, it needs to be re-read periodically as your chess understanding ramps up.

What is a jump formation?

Kmoch and Pachman took me from 1650 to over 1800 in the early 1990s. Unfortunately, I stopped playing chess until a couple of years ago. With a lot of study and improvement of my thought process since resuming the game, my understanding is much greater now. Kmoch redux might well be what it takes to get to that elusive 2000 level.

Opposing center Pawns positioned a Knight's jump apart, with half-open files leading up to each Pawn.

Example: 

White's d-Pawn and Black's e-Pawn are sitting a Knight's jump apart, with half-open files leading up to them. Black's liberation levers are c7-c5 or e6-e5. Either move requires quite a bit of preparation, of course.

Thanks.

Thank you for all these replies.