Higher Spin Scattering in Superstring Theory

Abstract

We compute scattering amplitudes of leading Regge trajectory states in open superstring theories. Highest spin states at mass level n with spin s=n+1 for bosons and s=n+1/2 for fermions are generated by particularly simple vertex operators. Hence, the cubic couplings of bosons and fermions on the leading Regge trajectory are given for arbitrary n. The same can be achieved for higher point amplitudes, and this article focuses on four point level with one heavy maximum spin state and three massless states in any bose-fermi combination, putting particular emphasis on manifest cyclic symmetry. Except for the four fermion coupling, all our results remain valid in any D<10 dimensional compactification scenario, so they might become relevant at LHC in case of an experimentally accessible low string scale. But even if not directly observable, superstring amplitudes provide important clues on higher spin dynamics and their consistent interactions in field theory.

31 pages; v3: final version published in Nuclear Physics B

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Cited by in corpus (19)

• On the cubic interactions of massive and partially-massless higher spins in (A)dS
• Chaotic scattering of highly excited strings
• Classical Limit of Higher-Spin String Amplitudes
• DDF operators, open string coherent states and their scattering amplitudes
• Measure for chaotic scattering amplitudes
• Higher Loop Spin Field Correlators in Various Dimensions
• Three-point correlators from string amplitudes: Mixing and Regge spins
• Higher Level String Resonances in Four Dimensions
• Scattering higher spins off D-branes
• Topological mass generation in four-dimensional gauge theory
• Massive Supermultiplets in Four-Dimensional Superstring Theory
• String theory in target space
• Three particle superstring amplitudes with massive legs
• Amplitudes Involving Massive States Using Pure Spinor Formalism
• On Tensorial Spaces and BCFW Recursion Relations for Higher Spin Fields
• Fermionic one-loop amplitudes of the RNS superstring
• Asymmetrically twisted strings
• Duality and Decay of Macroscopic F-Strings
• Tension between string amplitude prescriptions with presumed spacetime supersymmetry