We give a comprehensive review of recent developments on using the pure spinor
formalism to compute massless superstring scattering amplitudes at tree level. The main …

We present a new method, exact in α′, to explicitly compute string tree-level amplitudes
involving one massive state and any number of massless ones. This construction relies on …

We construct the unintegrated vertex operator at the first mass level of the open superstring
from the OPE of massless vertices. Using BRST cohomology manipulations, the tree …

A bstract In any type II superstring background, the supergravity vertex operators in the pure
spinor formalism are described by a gauge superfield. In this paper, we obtain for the first …

A bstract As a check of the first massive integrated vertex operator in the pure spinor
formalism constructed in arxiv: 1802.04486, we compute the one loop 2-point function of the …

A bstract 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 …

Constructing massive superstring vertex operators from massless vertex operators using the
pure spinor formalism - ScienceDirect Skip to main contentSkip to article Elsevier logo Journals …

We uncover a relation between the scattering amplitudes of massive strings and the
$\alpha'$ expansion of the massless string amplitude at tree level. More precisely, the n …

In any type II superstring background, the supergravity vertex operators in the pure spinor
formalism are described by a gauge superfield. In this paper, we obtain for the first time an …

In this work we review the construction of string theory vertex operators. We then construct
the vertex operator for the first massive states of the open superstring in terms of d= 10 super …