Published April 1, 2009
| Version v1
Journal article
Some remarks on dipole showers and the DGLAP equation
Creators
- 1. Theoretical Physics, Fermilab, MS 106, Box 500, Batavia, Illinois 60510 (United States)
- 2. Institut fuer Physik, Universitaet Mainz, D - 55099 Mainz (Germany)
Description
It has been argued recently that parton showers based on color dipoles conflict with collinear factorization and do not lead to the correct Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) equation. We show that this conclusion is based on an inappropriate assumption, namely, the choice of the gluon energy as evolution variable. We further show numerically that Monte Carlo programs based on dipole showers with 'infrared-sensible' evolution variables reproduce the DGLAP equation both in asymptotic form as well as in comparison to the leading behavior of second-order QCD matrix elements.
Additional details
Identifiers
- DOI
- 10.1103/PhysRevD.79.074021;
- arXiv
- arXiv:0903.2150v2;
Publishing Information
- Journal Title
- Physical Review. D, Particles Fields
- Journal Volume
- 79
- Journal Issue
- 7
- Journal Page Range
- p. 074021-074021.16
- ISSN
- 0556-2821
- CODEN
- PRVDAQ
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41052110
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ASYMPTOTIC SOLUTIONS; COLOR MODEL; COMPARATIVE EVALUATIONS; DIPOLES; EQUATIONS; FACTORIZATION; GLUONS; MATRIX ELEMENTS; MONTE CARLO METHOD; QUANTUM CHROMODYNAMICS; SHOWERS
- Descriptors DEC
- BOSONS; CALCULATION METHODS; COMPOSITE MODELS; EVALUATION; FIELD THEORIES; MATHEMATICAL MODELS; MATHEMATICAL SOLUTIONS; MULTIPOLES; PARTICLE MODELS; QUANTUM FIELD THEORY; QUARK MODEL
Optional Information
- Notes
- (c) 2009 The American Physical Society