Title: Measurements of $pi^-$ production in $^7$Be+$^9$Be collisions at beam momenta from 19$A$ to 15$A$GeV/$c$ in the NA61/SHINE experiment at the CERN SPS
Authors: NA61/SHINE Collaboration, A. Acharya et al.
Journal: The European Physical Journal C
Publication type: article
DOI: 10.1140/epjc/s10052-020-08514-6