Heat the oil in a heavy 12-inch skillet over MEDIUM heat. Add the onion, bell pepper, and jalapeño, and cook, stirring, until the vegetables begin to soften, approximately 4 to 5 minutes. Add the garlic and cook for 1 minute more. Add the beans, broth, oregano, cumin, paprika, salt, pepper, bay leaf, vinegar, and sugar. Increase the heat to bring the mixture to a low boil, then reduce the heat to LOW and simmer, stirring occasionally, until the mixture thickens and the flavors blend, about 15 minutes.