GLoBES Features and Examples

• Experiments are defined with the Abstract Experiment Definition Language (AEDL) . Pre-defined AEDL-files are available for a number of experiments. The parameters can be modified easily by changing the AEDL files.
• The GLoBES Library contains a variety of functions which allow to simulate various experiments on an event rate basis and to investigate their capabilities.
• Different analysis tools are provided.

New features in version 3.0:

• Customizable treatment of systematical errors
• User-defined priors to incorporate arbitrary external information on the oscillation parameters
• An interface for the implementation of non-standard physics
• Beta-beam fluxes are now built-in
• New and updated AEDL files
• Various bug fixes
• Improved performance

Abstract Experiment Definition Language (AEDL) features:

• Structured Channel->Rule->Experiment building block concept (see manual)
• Multiple energy resolution functions
• Different energy smearing algorithms
• Arbitrary efficiencies
• Definition of energy cuts, bin sizes and numbers etc.
• Various systematics parameters, such as normalization and energy calibration errors
• Different systematics modes, such as total rate or spectral analysis
• Arbitrary matter density profiles
• Arbitrary fluxes and cross sections; built-in neutrino factory and beta beam fluxes
• Any number of signal-background-combinations and oscillation channels within one experiment
• ...

GLoBES library features:

• Single and multiple experiment simulation (up to 32 experiments simultaneously)
• Low-level information: event rate vectors, oscillation probabilities etc.
• Simple Chi^2 for individual experiments and experiment combinations
• Inclusion systematical errors in Chi^2
• Chi^2-Cuts through the n-dimensional fit manifold
  Example for cut through manifold in theta13-deltacp-plane (including systematics):

  

• Projection of two- and multi-parameter correlations.
  Example for projection of two-parameter correlation:

  

• Projection of full n-parameter correlation by n-dimensional minimizer.
• Chi^2-Projections onto theta13- or deltacp-axis, and any other axis.
  Example for projection (onto theta13-axis) of the full n-parameter correlation (thick curve) compared to the projection of the theta13-deltacp-correlation only (thin curve):

  

• Chi^2-Projections onto theta13-deltacp-plane, and any other plane
  (Equivalent to first figure, but as projection of the fit manifold and not as cut)
• Projection of the n-dimensional fit-manifold onto any k-dimensional hyperplane (1<=k<n) 
• Numerical location of degeneracies
• Projections and cuts of degenerate solutions.
  Example for cut in theta13-deltacp-plane for original (black curve) and degenerate (gray curve) solution:

  

• Simulation of matter density uncertainties
• Run-time modification of experiment parameters: baseline, target mass, matter density profile etc.
• New in GLoBES 3.0: Inclusion of arbitrary external input on the oscillation parameters through the concept of user-defined priors
• New in GLoBES 3.0: User-defined treatment of systematical errors
  Example: Sensitivity of a reactor experiment with near and far detectors

  

• New in GLoBES 3.0: Interface for the implementation of non-standard physics
  Example: Sensitivity of a reactor experiments to wave package decoherence effects

  

• ...

GLoBES software package features

• User's interface (C library) for Linux
• Detailed User's and AEDL manual
• Many examples for immediate compilation
• AEDL prototype files for conventional beams, superbeams, neutrino factories, beta beams, reactor experiments
• A standalone program to test and debug AEDL files
• Utilities

(All figures are taken from the GLoBES User's manual)