Fit Type B:  Fit the mass peak for the signal region definition
Obtain the error on the signal region definition from that fit:
Mean: 3.09367
Sigma:0.0199784
Norm: 1768.25
Signal fraction: 0.921611+/-0.00448813
The Pt cut is: 10<= pt < 15
The fitted value of tau:       0.0480564+/-0.00224201
The fitted value of Lambda+:   0.0363558+/-0.00597941
The fitted value of Lambda-:   0.0177942+/-0.00422109
The fitted value of LambdaSym: 0.066+/-0.255934
The fitted value of F+:        0.239171+/-0.0350565
The fitted value of F-:        0.123557+/-0.0272324
The fitted value of FSym:      0.0128131+/-0.0081485
The fitted value of Scale:     1.12801+/-0.0280336
The fitted value of alpha:     0.919285+/-0.00438819
The fitted value of Bfrac:     0.327245+/-0.0133572