Recent progress in one-loop multi-parton calculations

Conference · Thu Sep 01 00:00:00 EDT 1994

OSTI ID:10109104

Bern, Z ^[1]; Dixon, L ^[2]; Dunbar, D C ^[3]; Kosower, D A ^[4]

---

1. Univ. of California, Los Angeles, CA (United States). Dept. of Physics
2. Stanford Univ., CA (United States). Stanford Linear Accelerator Center
3. Univ. College of Swansea, Wales (United Kingdom)
4. Centre d`Etudes de Saclay, Gif-sur-Yvette (France). Service de Physique Theorique de Saclay

The authors describe techniques that simplify the calculation of one-loop QCD amplitudes with many external legs, which are needed for next-to-leading-order (NLO) corrections to multi-jet processes. The constraints imposed by perturbative unitarity, collinear singularities and a supersymmetry-inspired organization of helicity amplitudes are particularly useful. Certain sequences of one-loop helicity amplitudes may be obtained for an arbitrary number of external gluons using these techniques. They also report on progress in completing the set of one-loop helicity amplitudes required for NLO three-jet production at hadron colliders, namely the amplitudes with two external quarks and three gluons.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (United States); California Univ., Los Angeles, CA (United States). Dept. of Physics
• Sponsoring Organization: USDOE, Washington, DC (United States); Sloan (Alfred P.) Foundation, New York, NY (United States); National Science Foundation, Washington, DC (United States); North Atlantic Treaty Organization, Brussels (Belgium)
• DOE Contract Number: AC03-76SF00515; FG03-91ER40662
• OSTI ID: 10109104
• Report Number(s): SLAC-PUB-6658; CONF-9407135-2; ON: DE95006062; IN: hep-ph/9409214; CNN: Grant BR-3222; Grant PHY-9218990; Grant CRG-921322; Grant CRG-910285; TRN: 95:001076
• Resource Relation: Conference: QCD workshop `94 on high energy physics,Montpellier (France),7-13 Jul 1994; Other Information: PBD: Sep 1994
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUANTUM CHROMODYNAMICS
RADIATIVE CORRECTIONS
CALCULATION METHODS
PERTURBATION THEORY
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