• Corpus ID: 239885956

Analyticity Domain for Off-shell Five-point Superstring Loop Amplitudes

  title={Analyticity Domain for Off-shell Five-point Superstring Loop Amplitudes},
  author={Ritabrata Bhattacharya and Ratul Mahanta},
In an earlier work [1], we showed that for arbitrary Feynman loop diagrams (with no massless internal propagators) in closed superstring field theory, a known domain can be analytically extended by simply adjoining convex combinations of points drawn from it. Such extension yielded 350 of the well-known 370 primitive tubes for 5-point functions. In this paper, we consider the remaining 20 primitive tubes. We show that different types of convex combinations cover different sections of these… 
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