Abstract
We present results for the quasielastic weak production of and hyperons induced by scattering off nuclei in the kinematical region of interest for accelerator neutrino experiments. We employ realistic hole spectral functions and we describe the propagation of the hyperons in the nuclear medium by means of a Monte Carlo cascade. The latter strongly modifies the kinematics and the relative production rates of the hyperons, leading to a nonvanishing cross section, to a sizable enhancement of the production and to a drastic reduction of the and distributions. We also compute the quasielastic weak production cross section, paying special attention to estimate the uncertainties induced by the model dependence of the vacuum weak matrix element. In this regard, the recent BESIII measurements of the branching ratios of () are used to benchmark the available theoretical predictions.
3 More- Received 30 January 2019
DOI:https://doi.org/10.1103/PhysRevC.99.065503
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