User applied upper and lower bounds to asymmetry value while fitting muon data in the MuonAnalysis interface and set lower bound to 0.0 or a small positive real number. Expected that asymmetry value would be >0.
Negative value of parameter obtained even though lower bound implies a positive value is required.
Please see above screenshot. We were able to get the same A0 value for the flat background for a variety of LowerBound values.
3.11.2 Windows 10
P.S. Have sent Anthony Lim a link to this post.