LUMINA: A Multi-Vendor Mammography Benchmark with Energy Harmonization Protocol. - Hongyi Pan; Gorkem Durak; Halil Ertugrul Aktas; Andrea Mia Bejar; Baver Tutun; Emre Uysal; Ezgi Bulbul; Mehmet Fatih Dogan; Berrin Erok; Berna Akkus Yildirim; Sukru Mehmet Erturk; Ulas Bagci (CoRR, 2026)