In the search results page, each row has an "Actions" button. If you click it, the first item in the list is "Download". So you can download without opening the result in a separate tab.
At the top of the search results page there is a selection box. And, each search result has a check box. If you select all or use the checkboxes to select what you want, you can then choose Selected Items, Download as Zip.
Additionally to Jeff Potts' comment, and also assuming 5.2, just to say that Smart folders have also "Download as Zip" action, so if your search is specific enough, you may configure it as an smart query, and then simply to use the cited action.