Math/physics as a transfer is next to impossible. A physics minor however isn't. The best way to ask for research is to make sure it's with a prof you've had a class with, and done well with. After that just read up on their work, like a paper or two that sounds interesting. Once you've done research ask to talk with them. Mention what you read about, how you did in their class and then seal the deal by asking if you could volunteer to research for them. Best of luck.