Immediately after the Swiss won the last game, shouts of joy could be heard throughout the neighbourhood. Five minutes later, there were shorts blasts of honking and yelling. Then the rain came and washed it all away.
Even though you now know that you're entitled to call the police after 10 pm, I'd recommend that you don't, for all the reasons mentioned by others, above.
Rather just keep a list of the dates of the games, and on each one decide, for yourself, whether the noise can be tolerated, and whether any measures you've taken help, enough, or whether to stroll over there to the owner (or call him by phone, in case he can hear it ring) and ask him to turn the volume down a bit. And he will probably agree to do so, since he now knows who you are and where you live.
Yes, very annoying if you're trying to sleep. But generally accepted since it is a temporary thing, on a short list of dates that are known, so the whole thing won't persist forever.
Italians are the usual suspects, being both better at football and more likely to beep their horns at every opportunity.