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Full-Color Two-Loop Four-Gluon Amplitude in N=2 Supersymmetric QCD
CERN, Theoret Phys Dept, CH-1211 Geneva 23, Switzerland;UCLouvain, Ctr Cosmol Particle Phys & Phenomenol CP3, Chemin Cyclotron 2, B-1348 Louvain La Neuve, Belgium.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Theoretical Physics. Stockholm Univ, NORDITA, Roslagstullsbacken 23, S-10691 Stockholm, Sweden;KTH Royal Inst Technol, Roslagstullsbacken 23, S-10691 Stockholm, Sweden.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Theoretical Physics.ORCID iD: 0000-0002-6697-775x
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Theoretical Physics.
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2019 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 123, no 24, article id 241601Article in journal (Refereed) Published
Abstract [en]

We present the fully integrated form of the two-loop four-gluon amplitude in N = 2 supersymmetric quantum chromodynamics with gauge group SU(N-c) and with N-f massless supersymmetric quarks (hypermultiplets) in the fundamental representation. Our result maintains full dependence on N-c and N-f, and relies on the existence of a compact integrand representation that exhibits the duality between color and kinematics. Specializing to the N = 2 superconformal theory, where N-f = 2N(c), we obtain remarkably simple amplitudes that have an analytic structure close to that of N = 4 super-Yang-Mills theory, except that now certain lower-weight terms appear. We comment on the corresponding results for other gauge groups.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2019. Vol. 123, no 24, article id 241601
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Subatomic Physics
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URN: urn:nbn:se:uu:diva-400824DOI: 10.1103/PhysRevLett.123.241601ISI: 000501493200003OAI: oai:DiVA.org:uu-400824DiVA, id: diva2:1384933
Funder
Swedish Research Council, 621-2014-5722Knut and Alice Wallenberg Foundation, KAW 2013.0235EU, European Research Council, 637019Ragnar Söderbergs stiftelseAvailable from: 2020-01-13 Created: 2020-01-13 Last updated: 2020-01-13Bibliographically approved

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Johansson, HenrikKälin, GregorMogull, Gustav

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