  We present angle-resolved photoemission spectroscopy results on thin films of
the three-dimensional manganite perovskite La1-xSrxMnO3, with TC = 240 K. In
the low-binding energy region, we found two energy bands, one dispersing along
the (100) sample surface and the other along the normal to the surface. Through
a detailed polarization-dependent analysis, we have determined the symmetries
of the two bands. The initial states associated with the band that disperses
along the surface are dominantly odd with respect to the (110) mirror plane and
even with respect to the (010) mirror plane. Based upon this investigation, we
have derived the expression of the spatial term for the wave functions
describing these low-energy states.
