Ursulino, Tiago2014-12-032014-12-032013-11-05Journal Of High Energy Physics. New York: Springer, n. 11, 26 p., 2013.1029-8479http://hdl.handle.net/11449/113043We extend the Berkovits-Maldacena prescription for MHV amplitudes of the open superstring to the closed superstring, showing that in the alpha'aEuro parts per thousand= 0 limit it reduces to the result of supergravity found recently by Hodges. We also verify that this prescription calculates the correct superstring tree level MHV amplitude for 4 gravitons including alpha' corrections.26engScattering AmplitudesSuperstrings and Heterotic StringsExtended SupersymmetryArtigo10.1007/JHEP11(2013)035WOS:000326703100001Acesso restrito