Higher Point Spin Field Correlators in D=4 Superstring Theory

Details Higher Point Spin Field Correlators in D=4 Superstring Theory Higher Point Spin Field Correlators in D=4 Superstring Theory

2009-11-27

arxiv.org/abs/0911.5168v3

Nucl.Phys.B834:163-221,2010

Physics

High Energy Physics

High Energy Physics - Theory

61 pages, LaTeX; v2: enlarged introduction; final version to appear in NP B; v3: little typos removed

Scientific paper

10.1016/j.nuclphysb.2010.03.015

Calculational tools are provided allowing to determine general tree-level scattering amplitudes for processes involving bosons and fermions in heterotic and superstring theories in four space-time dimensions. We compute higher-point superstring correlators involving massless four-dimensional fermionic and spin fields. In D=4 these correlators boil down to a product of two pure spin field correlators of left- and right-handed spin fields. This observation greatly simplifies the computation of such correlators. The latter are basic ingredients to compute multi-fermion superstring amplitudes in D=4. Their underlying fermionic structure and the fermionic couplings in the effective action are determined by these correlators.

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