Berkovits, Nathan [UNESP]Vallilo, Brenno Carlini [UNESP]2014-05-272014-05-272000-12-01Journal of High Energy Physics, v. 4, n. 7 PART A, 2000.1029-8479http://hdl.handle.net/11449/66321Using pure spinors, the superstring was recently quantized in a manifestly ten-dimensional super-Poincaré covariant manner and a covariant prescription was given for tree-level scattering amplitudes. In this paper, we prove that this prescription is cyclically symmetric and, for the scattering of an arbitrary number of massless bosons and up to four massless fermions, it agrees with the standard Ramond-Neveu-Schwarz prescription.engExtended SupersymmetrySuperstrings and Heterotic StringsArtigo10.1088/1126-6708/2000/07/015WOS:000168153900015Acesso restrito2-s2.0-7744237745