Maia scored 19 points and grabbed 15 rebounds for the Bears (3-3), while Halpern made 5 of 8 shots from 3-point range, finishing with 17 points overall.
Halpern hit four of his 3s in the second half, including two that came 43 seconds apart and capped a 15-6 run at the start of the half that gave Brown a 46-33 lead with 12:53 remaining.
The Bears launched 36 3-point attempts, but Halpern's teammates were less successful, combining to make 5 of 28. Sean McGonagill was 2-for-14 behind the arc but handed out eight assists and made three steals.
Louis Montes scored 17 points, including 10 of 10 from the free-throw line, to lead the Pioneers (3-3).
Thurl Bailey, a member of the 1983 NC State title team, has helped get the Wolfpack an invitation to the White House to meet President Barack Obama on May 9.
It's about time for someone other than Duke and Kentucky to grab the top class. Could it be Shaka Smart and Texas in 2017?
Which teams have enjoyed the most NCAA tournament success since 2000? Kansas' recent run to the Elite Eight vaulted the Jayhawks up the list.