Generalized unitarity and six-dimensional helicity

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.085022· OSTI ID:21541542

Bern, Zvi; Dennen, Tristan; Huang, Yu-tin; Ita, Harald ^[1]; Carrasco, John Joseph ^[2]

---

1. Department of Physics and Astronomy, UCLA, Los Angeles, California 90095-1547 (United States)
2. Department of Physics, Stanford University, Stanford, California 94305-4060 (United States)

We combine the unitarity method with the six-dimensional helicity formalism of Cheung and O'Connell to construct loop-level scattering amplitudes. As a first example, we construct dimensionally regularized QCD one-loop four-point amplitudes. As a nontrivial multiloop example, we confirm that the recently constructed four-loop four-point amplitude of N=4 super-Yang-Mills theory, including nonplanar contributions, is valid for dimensions D{<=}6. We comment on the connection of our approach to the recently discussed Higgs infrared regulator and on dual conformal properties in six dimensions.

• OSTI ID: 21541542
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 8; Other Information: DOI: 10.1103/PhysRevD.83.085022; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
HELICITY
HIGGS BOSONS
HIGGS MODEL
MANY-DIMENSIONAL CALCULATIONS
QUANTUM CHROMODYNAMICS
SCATTERING AMPLITUDES
UNITARITY
YANG-MILLS THEORY
AMPLITUDES
BOSONS
ELEMENTARY PARTICLES
FIELD THEORIES
MATHEMATICAL MODELS
PARTICLE MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES
QUANTUM FIELD THEORY