  We have performed high-resolution angle-resolved photoemission spectroscopy
(ARPES) on trigonal tellurium consisting of helical chains in the crystal.
Through the band-structure mapping in the three-dimensional Brillouin zone, we
found a definitive evidence for the band splitting originating from the chiral
nature of crystal. A direct comparison of the band dispersion between the ARPES
results and the first-principles band-structure calculations suggests the
presence of Weyl nodes and tiny spin-polarized hole pockets around the H point.
The present result opens a pathway toward studying the interplay among crystal
symmetry, band structure, and exotic physical properties in chiral crystals.
