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2018-08-28add path to the likelihood fittlatorre
This commit updates the likelihood fit to use the KL path expansion. Currently, I'm just using one coefficient for the path in both x and y.
2018-08-27update code to use get_index_snoman* functions to calculate the index of ↵tlatorre
refraction
2018-08-14fix how the RMS scattering angle is calculatedtlatorre
The RMS scattering angle calculation comes from Equation 33.15 in the PDG article on the passage of particles through matter. It's not entirely obvious if this equation is correct for a long track. It seems like it should be integrated along the track to add up the contributions at different energies, but it's not obvious how to do that with the log term. In any case, the way I was previously calculating it (by using the momentum and velocity at each point along the track) was definitely wrong. I will try this out and perhaps try to integrate it later.
2018-08-14move everything to src directorytlatorre