TY - GEN AU - Abdul Halim, A. AU - Bueno Villar, Antonio AU - Pierre Auger Collaboration PY - 2025 UR - https://hdl.handle.net/10481/103843 AB - We report an investigation of the mass composition of cosmic rays with energies from 3 to 100 EeV (1 EeV ¼ 10 18 eV) using the distributions of the depth of shower maximum Xmax . The analysis relies on ∼50;000 events recorded by the surface detector... LA - eng PB - American Physical Society TI - Measurement of the depth of maximum of air-shower profiles with energies between 10 18.5 and 10 20 eV using the surface detector of the Pierre Auger Observatory and deep learning DO - 10.1103/PhysRevD.111.022003 ER -