TY - GEN T1 - Observation of a cross-section enhancement near the $t\bar{t}$ production threshold in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector UR - https://doi.org/10.1088/1361-6633/ae60a0 PY - 2026/01/16 AU - Collaboration ATLAS ED - Y2 - 2026/11/10 ER -