title: Amplitude for N-gluon superstring scattering.
abstract: We consider scattering processes involving N gluonic massless states of open superstrings with a certain Regge slope alpha'. At the semiclassical level, the string world-sheet sweeps a disk and N gluons are created or annihilated at the boundary. We present exact expressions for the corresponding amplitudes, valid to all orders in alpha', for the so-called maximally helicity violating configurations, with N = 4, 5 and N = 6. We also obtain the leading O(alpha '2) string corrections to the zero-slope N-gluon Yang-Mills amplitudes.
authors.affiliation: Arnold-Sommerfeld Center for Theoretical Physics, Ludwig-Maximilians-Universität München, Theresienstrasse 37, 80333 München, Germany.
authors.forename: Stephan
authors.initials: S
authors.lastname: Stieberger
authors.forename: Tomasz R
authors.initials: TR
authors.lastname: Taylor