Power corrections in QCD: A matter of energy resolution

Journal Article · Fri Mar 01 00:00:00 EST 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.2238· OSTI ID:285405

Akhoury, R; Zakharov, V I ^[1]

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1. The Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1120 (United States)

We consider powerlike corrections in QCD which can be viewed as power suppressed infrared singularities. We argue that the presence of these singularities depends crucially on the energy resolution. In the case of poor energy resolution, i.e., inclusive cross sections, there are constraints on infrared singularities expressed by the Kinoshita-Lee-Nauenberg (KLN) theorem. We rewrite the theorem in covariant notations and argue that the KLN theorem implies the extension of the Bloch-Nordsieck cancellation of logarithmic singularities to the case of linear corrections. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 285405
• Journal Information: Physical Review Letters, Vol. 76, Issue 13; Other Information: PBD: Mar 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
QUANTUM CHROMODYNAMICS
CORRECTIONS
INFRARED DIVERGENCES
ENERGY RESOLUTION
MATTER
SINGULARITY
CROSS SECTIONS
LIMITING VALUES