"I don't accept this behaviour, and nobody accepts it", he said.
"It is alleged that, in the 32nd minute, they failed to ensure that their players conducted themselves in an orderly fashion".
They have until 6pm on 6 December to respond.
However, Xhaka picked up his fifth booking of the season with a foul shortly after half time and will now serve an immediate one-game suspension meaning the Swiss worldwide will now miss Wednesday night's trip to Old Trafford.
Wednesday's trip to Manchester United is another test, given that Gunners haven't beaten a big six team away from home since January 2015, but they will head to Old Trafford in buoyant mood.
Image Gabon striker Aubameyang scored two goals for the Gunners
Emery has already earned a reputation for changing formation or tactics depending on the opponent, and Torreira said the flexibility introduced is well received by Arsenal players.
Speaking in his pre-match press conference on Monday afternoon, Emery revealed that Ozil is still training by himself as he works his way back to full fitness. We're not happy and yesterday was no different. "In the first half we started very strong, pressing very high, sometimes we managed to steal the ball very high we had many chances after scoring the first goal".
"We have many goals this season". It's one situation that was closed one or two months ago.
"I think we talk a lot about how much we've progressed in terms of dealing with racism in our country, but we still have moments like this that disturb you and concern you".
Unai Emery's pre-match comments - which stated that he "didn't know" how Ozil picked up the problem or if he was at the ground to watch the match - have ignited speculation of a supposed fallout.
I'm A Celebrity: Fans CALL OUT Malique Thompson-Dwyer exit 'FAKE'
It looks like the producers of I'm A Celebrity Get Me Out Of Here have a bit of explaining to do after last night's elimination. I'm A Celebrity bosses have confirmed John Barrowman is back in the jungle after spraining his ankle in camp.