Published November 1, 2004
| Version v1
Journal article
Spectral density in the resonance region and analytic confinement
- 1. Institute of Theoretical Physics III, Erlangen-Nuremberg University, Erlangen (Germany)
- 2. Bogoliubov Laboratory of Theoretical Physics, JINR, 141980 Dubna (Russian Federation)
- 3. Special Research Centre for the Subatomic Structure of Matter, University of Adelaide, South Australia 5005 (Australia)
Description
We study the role of finite widths of resonances in a nonlocal version of the Wick-Cutkosky model. The spectrum of bound states is known analytically in this model and forms linear Regge tragectories. We compute the widths of resonances, calculate the spectral density in an extension of the Breit-Wigner ansatz and discuss a mechanism for the damping of unphysical exponential growth of observables at high energy due to finite widths of resonances
Additional details
Identifiers
- DOI
- 10.1103/PhysRevD.70.094037;
- arXiv
- arXiv:hep-ph/0406069v2;
Publishing Information
- Journal Title
- Physical Review. D, Particles Fields
- Journal Volume
- 70
- Journal Issue
- 9
- Journal Page Range
- p. 094037-094037.10
- ISSN
- 0556-2821
- CODEN
- PRVDAQ
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37020823
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BOUND STATE; BREIT-WIGNER FORMULA; PARTICLE MODELS; PARTICLE WIDTHS; REGGE TRAJECTORIES; RESONANCE PARTICLES; SPECTRAL DENSITY
- Descriptors DEC
- ELEMENTARY PARTICLES; FUNCTIONS; HADRONS; MATHEMATICAL MODELS; PARTICLE PROPERTIES; SPECTRAL FUNCTIONS
Optional Information
- Notes
- (c) 2004 The American Physical Society