Brown beef in oil over high heat in batches. Tip into slow cooker.
Cook onion, carrot, celery in same pan 10 min. Add garlic 1 min. Tip in. Add wine to pan, boil 2 min. Pour in.
Add tomatoes, tomato paste, rosemary, thyme, salt, pepper to cooker. Stir.
Cover. Cook low 8 hours (or high 5 hours).
Discard herb stems. Shred beef with two forks in the sauce. Tip into a wide pan, simmer uncovered 20 minutes to thicken.
Boil pappardelle. Drain reserving 1 cup of pasta water. Toss pasta with sauce, adding pasta water to loosen.
Top with parmesan. Serve immediately.