The popular GENIE Generator product is used by nearly all accelerator neutrino experiments and it plays a key role in the exploitation of neutrino data. The Generator implements a modern software framework and it includes state-of-the-art physics modules. It captures the latest results of the GENIE global analysis of neutrino scattering data and includes several tunes that were produced using the proprietary Comparisons and Tuning products. The GENIE physics model is universal and comprehensive: It handles all neutrinos and targets, and all processes relevant from MeV to PeV energy scales. The Generator includes several tools (flux drivers, detector geometry navigators, specialized event generation apps, event reweighting engines) to simulate complex experimental setups in full detail and to support generator-related analysis tasks.
The correlated tail from previous work disappeared with the most recent modifications to the LFG model here. Forcing the computed removal energy to be nonnegative makes sense for momenta drawn from the bulk of the LFG distribution; negative removal energy ordinarily means the nucleon is not bound (i.e. outside the nucleus). However, for momenta drawn from the correlated tail, they will always be negative relative to the calculation from the LFG model: their associated KE is much larger because their internal (pairwise) potential energy offsets it. Obviously the LFG computation can't be aware of that.
Here we take cases where the LFG calculation winds up negative and simply reassign them a (more) sensible removal energy. In principle we would like something specific to SRC correlated pairs. In the absence of that, we fall back on the mean binding energy per nucleon, which is a (bad) proxy for the one-nucleon separation energy.
The correlated tail from previous work disappeared with the most recent modifications to the LFG model here. Forcing the computed removal energy to be nonnegative makes sense for momenta drawn from the bulk of the LFG distribution; negative removal energy ordinarily means the nucleon is not bound (i.e. outside the nucleus). However, for momenta drawn from the correlated tail, they will always be negative relative to the calculation from the LFG model: their associated KE is much larger because their internal (pairwise) potential energy offsets it. Obviously the LFG computation can't be aware of that.
Here we take cases where the LFG calculation winds up negative and simply reassign them a (more) sensible removal energy. In principle we would like something specific to SRC correlated pairs. In the absence of that, we fall back on the mean binding energy per nucleon, which is a (bad) proxy for the one-nucleon separation energy.