Fit to the $^{113}$ Cd $\beta^{-}$ spectrum to extract the effective value of $g_{A}$.

Author: Toby Dixon ([email protected])

Date : June 1 2023

Step 0: Setup the enviroment

Use: source /software/LoadBat.sh This will load BAT, root etc.

Step 1: Convolution of theory with MC

The first step is a macro ConvolveMC.cxx This will create the input file for BAT, the options are precised on the command line if compile with:

 g++ macros/ConvolveMC.cxx -o ConvolveMC `root-config  --cflags --glibs`

This will create an output file of {OUTPATH}/{NAME}_{RESOTYPE}_{MODEL}.root used for the gA fit.

Note that the input file containing the resolution, bias etc must have been updated to include the range of efficiency curve parameters.

Step 2: gA fit

Inside:

Next you run the fit in gA_fit subdirectory, compile with make and then run: ./rungA_fit --help to see options.