The separation of overlapping transitions in β-carotene with broadband 2D electronic spectroscopy

► β-carotene at 77 K was studied with broadband 2D electronic spectroscopy. ► Overlapping transitions in the energetic region associated with S∗ were resolved. ► Dynamic lineshapes consistent with ISRS were observed and modeled. ► A nonrephasing signal of unknown origin was detected at long times.