Matter Dependence of the Three-Loop Soft Anomalous Dimension Matrix

Journal Article · Fri Jan 23 00:00:00 EST 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevD.79.091501· OSTI ID:946446

Dixon, Lance J

The resummation of soft gluon exchange for QCD hard scattering requires a matrix of anomalous dimensions, which has been computed through two loops. The two-loop matrix is proportional to the one-loop matrix. Recently there have been proposals that this proportionality extends to higher loops. One can test such proposals by computing the dependence of this matrix on the matter content in a generic gauge theory. It is shown that for the matter-dependent part the proportionality extends to three loops for arbitrary massless processes.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 946446
• Report Number(s): SLAC-PUB-13517; PRLTAO; arXiv:0901.3414; TRN: US0900959
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANOMALOUS DIMENSION
GLUONS
QUANTUM CHROMODYNAMICS
SCATTERING
Phenomenology-HEP
HEPPH
HEPTH