Amplitudes Involving Massive States Using Pure Spinor Formalism

Understand

Same amplitudes evaluated independently using RNS and pure spinor formalism are expected to agree.

• While for massless states, this fact has been firmly established, for massive states such an explicit check has been lacking so far.
• We compute all massless-massless-massive 3-point functions in open supertrings in pure spinor formalism for the first massive states and compare them with the corresponding RNS results.
• We fix the normalization of the vertex operators of the massive states by comparing same set of 3-point functions for a fixed ordering in the two formalisms.