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Scattering Amplitudes from Superconformal Ward Identities

D. Chicherin, J. M. Henn, and E. Sokatchev
Phys. Rev. Lett. 121, 021602 – Published 10 July 2018
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Abstract

We consider finite superamplitudes of N=1 matter, and use superconformal symmetry to derive powerful first-order differential equations for them. Because of on-shell collinear singularities, the Ward identities have an anomaly, which is obtained from lower-loop information. We show that in the five-particle case, the solution to the equations is uniquely fixed by the expected analytic behavior. We apply the method to a nonplanar two-loop five-particle integral.

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  • Received 19 April 2018
  • Revised 18 May 2018

DOI:https://doi.org/10.1103/PhysRevLett.121.021602

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

D. Chicherin1, J. M. Henn1,2, and E. Sokatchev1,3,4

  • 1PRISMA Cluster of Excellence, Johannes Gutenberg University, 55099 Mainz, Germany
  • 2Max-Planck-Institut für Physik, Werner-Heisenberg-Institut, 80805 München, Germany
  • 3LAPTh, Université Savoie Mont Blanc, CNRS, B.P. 110, F-74941 Annecy-le-Vieux, France
  • 4Theoretical Physics Department, CERN, 1211 Geneva 23, Switzerland

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Issue

Vol. 121, Iss. 2 — 13 July 2018

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