Legal Question in Criminal Law in California

The quick answer to your question is under California Penal Code, Section 2972 the Standard of Proof required is beyond a reasonable doubt and there is a right to a jury trial and if the petition is taken to a hearing with a jury then it must be unanimous.

So what this means is that under 2970 if the district attorney files a petition with the court to continue the involuntary treatment and no agreement is reached between the parties then under 2972, the next step is a hearing. The person being treated has the right to a jury trial and the decision must be unanimous.