Preheat oven to 325F.
Heat EVOO in a large Dutch oven over medium-high heat. Season meat with salt and pepper, and brown all over in batches. Remove meat to a plate and add vegetables, garlic and bay to the pot; season with salt and pepper. Cook to soften 5-6 minutes. Stir in tomato paste, cook 1 minute then add wine. Reduce by half then add stock and tomatoes. Break up tomatoes and slide meat back in along with herb bundle. Cover and transfer to oven; cook to tender, 2 1/2 hours.
Remove meat and discard herb bundle. Cover and keep warm simmer sauce to thicken while you cook rigatoni.
Bring a large pot of water to a boil for the pasta. Season water with salt and cook rigatoni to al dente. Drain pasta and toss with butter and half to 2/3 of the sauce. Serve pasta topped with meat on or off the bone. Pass extra sauce at table with Romano cheese.