AsymmetryCalc-v1.rst



Description
This algorithm is used to calculate the asymmetry for a Muon workspace.
The asymmetry is given by:
Asymmetry = \frac{F-\alpha B}{F+\alpha B}

, where F is the front spectra, B is the back spectra
and \alpha is the balance parameter [1].
The errors in F-\alpha B and F+\alpha B are calculated
by adding the errors in F and B in quadrature; any
errors in \alpha are ignored. The errors for the asymmetry are
then calculated using the fractional error method with the values for
the errors in F-\alpha B and F+\alpha B.
The output workspace contains one set of data for the time of flight:
the asymmetry and the asymmetry errors.

Note
This algorithm does not perform any grouping. The grouping must be
done using :ref:`algm-MuonGroupDetectors` or AutoGroup option
of :ref:`algm-LoadMuonNexus`.


[1]
See :ref:`algm-AlphaCalc`


Usage
Example - Calculating asymmetry:
Output: