  We discuss the direct production of light stringy states. Those states
correspond to the lightest stringy excitations localized at the intersection of
two D-brane stacks and their mass can be parametrically smaller than the string
scale. Thus in a low string scale scenario one may observe stringy signatures
at LHC even in the absence of the usual string resonances. We compute the tree
level string scattering amplitude involving two gauge bosons and two such light
stringy states. We give the squared amplitude summed over all polarization and
gauge configuration and eventually apply the result to the quark sector of a
D-brane realization of the Standard Model.
