Computing one-loop amplitudes from the holomorphic anomaly of unitarity cuts

Journal Article · Sat Jan 15 00:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.71.025012· OSTI ID:20705869

Britto, Ruth; Cachazo, Freddy; Feng, Bo ^[1]

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1. School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540 (United States)

We propose a systematic way to carry out the method introduced in F. Cachazo, hep-th/0410077 for computing certain unitarity cuts of one-loop N=4 amplitudes of gluons. We observe that the class of cuts for which the method works involves all next-to-MHV n-gluon one-loop amplitudes of any helicity configurations. As an application of our systematic procedure, we obtain the complete seven-gluon one-loop leading-color amplitude A{sub 7;1}(1{sup -},2{sup -},3{sup -},4{sup +},5{sup +},6{sup +},7{sup +})

• OSTI ID: 20705869
• Journal Information: Physical Review. D, Particles Fields, Vol. 71, Issue 2; Other Information: DOI: 10.1103/PhysRevD.71.025012; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
ANGULAR MOMENTUM
COLOR MODEL
GLUONS
HELICITY
QUANTUM CHROMODYNAMICS
UNITARITY
UNITARY SYMMETRY