Title: Experimental observation of left–right asymmetry in outer s-shell photoionization
Abstract: The double differential cross-sections of outer s-shells photoelectrons have been measured for noble gases He, Ne, Ar, Kr, Xe and the H2 molecule by linearly polarized photons. A nonzero left–right asymmetry has been observed relative to the mirroring plane that is perpendicular to the polarization direction of the photon beam.