Photo-stationary Lifshitz transition in High Tc superconductor Bi2Sr2CaCu2O8+&

This dataset contains the processed and analyzed time- and angle-resolved photoemission spectroscopy (tr-ARPES) data underlying the figures and conclusions presented in the associated manuscript. The repository includes: Processed tr-ARPES spectra and analysis results in OriginPro project files (.opju), including energy- and momentum-dependent spectra, fitting procedures, extracted band dispersions, and temporal evolutions used in the manuscript figures. Fermi surface maps and related momentum-space analysis in Igor Pro packed experiment format (.pxp). Supporting metadata and plotting information necessary to reproduce the main data visualizations presented in the paper. The data were acquired on Bi2Sr2CaCu2O8+δ samples under ultrafast optical excitation conditions described in the manuscript. The deposited files correspond to the analyzed datasets used for figure generation and interpretation. Raw experimental data are available from the corresponding author upon reasonable request.