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Amplitudes from superconformal Ward identities
Dmitry ChicherinJohannes M. HennEmery Sokatchevsubject
High Energy Physics - TheoryHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics - Theory (hep-th)symmetry: conformalFOS: Physical sciencesdifferential equationsanomaly[ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph]singularity: collinearWard identity: conformal[ PHYS.HTHE ] Physics [physics]/High Energy Physics - Theory [hep-th]description
We consider finite superamplitudes of N=1 matter, and use superconformal symmetry to derive powerful first-order differential equations for them. Due to 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 non-planar two-loop five-particle integral.
year | journal | country | edition | language |
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2018-04-23 |