I personally learned a lot from the Google News Webmaster Hangout on Google+ from a couple weeks ago and I keep pulling out pieces of that knowledge for you guys.
The next thing I learned was that if you wanted to, you can tell Google News to only crawl content they find in your sitemap file. This is called "Sitemap Only Crawl" and Stacie Chan from the Google News explained it in greater detail at the 20:50 minute mark in the video. She said:
Or you could always use site map only crawl, which is also equally accepted.Instead of listing all of your news sections in the Publisher Center you can tell us that you only want us to crawl articles from your sitemap, not news sections at all.
And you can actually do that through the Publisher Center by contacting us because then we'll have to then note that you want to only be crawled from your site map.
You can submit a site map through your Webmaster Tools account and we'll crawl that in addition to your news sections,
But if you're really concerned that we're crawling non-news content, I would suggest submitting a site map and letting us know that you want us to only crawl the articles from that site map.
Google actually explains this in the help center saying:
Create a Google News Sitemap for your news articles only, and let us know that you'd prefer to have your articles crawled exclusively through your sitemap. Once you've created it, please send us a link to the exact location.
Here is the video:
Forum discussion at Google+.
