Monday's contest was the fifth in six games featuring an appearance by the right-hander.
"I don't think, if anything, it's [anything] major," Braves manager Fredi Gonzalez said following Monday's game. "Maybe it's just a situation where I think he's gone -- a bunch of them have gone -- three in a row or four out of five days, six out of eight days."
A long-term absence for Carpenter could spell trouble for the Atlanta bullpen, which struggled to replace right-hander Jordan Walden while he was sidelined with a left hamstring strain from May 5 to June 10.
Lovell and Gonzalez came out to the mound to check on the reliever following his fifth pitch in the 12th, a 2-2 fastball that Brown hit into center field.
Right-hander Anthony Varvaro entered the game in relief of Carpenter and stranded Brown by retiring all three batters he faced.
Beato has given up one hit in 1 2/3 innings out of the Braves' bullpen this season.
Joe Morgan is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.