Maximal R-symmetry violating amplitudes in type IIB superstring theory

Abstract

On-shell superspace techniques are used to quantify R-symmetry violation in type IIB superstring theory amplitudes in a flat background in ten dimensions. This shows the existence of a particularly simple class of non-vanishing amplitudes in this theory which violate R-symmetry maximally. General properties of the class and some of its extensions are established which at string tree level are shown to determine the first three non-trivial effective field theory contributions to all multiplicity. This leads to a natural conjecture for the exact analytic part of the first two of these.

10 pages. minute modifications, references added

References in corpus (5)

• HypExp 2, Expanding Hypergeometric Functions about Half-Integer Parameters
• Multi-Gluon Scattering in Open Superstring Theory
• Stringy KLT relations, global symmetries, and E_7(7) violation
• On-shell Recursion in String Theory
• Three particle superstring amplitudes with massive legs

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