neumann-py/NeutrinoFog

Neutrino fog and floor for direct dark matter searches

NeutrinoFog

Code to reproduce the results from my paper arXiv:[2109.03116]

Requirements

• CMasher
• gfortran (or equivalent f95 compiler, but make sure to edit src/like/Makefile)

Running the code

The heavy lifting of the likelihood analysis is done in a short fortran program (src/like/like.f95), which can be executed via python. To start, compile the fortran likelihood code by doing

make -C src/like

Then to run one of the python scripts do e.g.

cd src
python runNuFloor_SI.py Xe

using one of the following scrips:

• src/runNuFloor_SI.py - SI limits
• src/runNuFloor_SDp.py - SD (proton) limits
• src/runNuFloor_SDn.py - SD (neutron) limits
• src/runNuFloor_NuFluxUncertainties.py - To test the effect of neutrino flux uncertainties

Each takes about 30 minutes per target on my machine, but the resolutions can be lowered to generate them faster.

Contents

• src/ - Contains python and fortran code to produce the main results
• plots/ - Contains all the plots in pdf and png formats
• notebooks/ - Jupyter notebooks for plotting results
• data/ - data files, including neutrino fluxes, experimental exclusion limits, and the data produced by this code

Python modules

• WIMPFuncs.py - Functions needed to calculate WIMP rates
• NeutrinoFuncs.py - Functions needed to calculate neutrino rates
• Like.py - Functions for wrapping and running the likelihood code
• LabFuncs.py - Various utilities
• PlotFuncs.py - Plotting functions

Notebooks

• Main.ipynb - Figures 1 and 3b of the paper
• ExplanationFigure.ipynb - Figure 2
• SI.ipynb - Figure 3a and S1
• SDp.ipynb - Figure S2a
• SDn.ipynb - Figure S2b

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If you just want .txt files for the neutrino floors themselves here they are:

Spin independent

• Xenon: Xe_SI.txt
• Germanium: Ge_SI.txt
• Argon: Ar_SI.txt
• Helium: He_SI.txt
• Fluorine: F_SI.txt
• CaWO4: CaWO4_SI.txt
• NaI: NaI_SI.txt

Spin dependent (proton)

• Xenon: Xe_SDp.txt
• Germanium: Ge_SDp.txt
• Silicon: Si_SDp.txt
• Fluorine: F_SDp.txt
• NaI: NaI_SDp.txt

Spin dependent (neutron)

• Xenon: Xe_SDn.txt
• Germanium: Ge_SDn.txt
• Silicon: Si_SDn.txt
• NaI: NaI_SDn.txt

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If you need any further assistance or have any questions, contact me at ciaran.aj.ohare@gmail.com. And if you do use anything here please cite the paper, O'Hare 2021

@article{OHare:2021utq,
    author = "O'Hare, Ciaran A. J.",
    title = "{Fog on the horizon: a new definition of the neutrino floor for direct dark matter searches}",
    eprint = "2109.03116",
    archivePrefix = "arXiv",
    primaryClass = "hep-ph",
    month = "9",
    year = "2021"
}