Published January 2009
| Version v1
Journal article
Sigma pole position and errors of a once and twice subtracted dispersive analysis of pi-pi scattering data
- 1. Department of Theoretical Physics, H. Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow (Poland)
- 2. Departamento de Fisica Teorica, II (Metodos Matematicos), Facultad de Ciencias Fisicas, Universidad Complutense de Madrid, E-28040, Madrid (Spain)
- 3. ul. Paulinska, 6/18 Krakow 31-065 (Poland)
Description
We show how the new precise data on kaon decays together with forward dispersion relations, sum rules and once- and twice-subtracted Roy's equations allow for a precise determination of the sigma meson pole position. We present a comparison and a study of the different sources of uncertainties when using either once- or twice-subtracted Roy's equations to analyze the data. Finally we present a preliminary determination of the σ pole from the constrained dispersive data analysis
Availability note (English)
Available from http://dx.doi.org/10.1016/j.nuclphysbps.2008.12.071Additional details
Identifiers
- DOI
- 10.1016/j.nuclphysbps.2008.12.071;
- arXiv
- arXiv:0811.4510v2;
- PII
- S0920-5632(08)00534-3;
Publishing Information
- Journal Title
- Nuclear Physics. B, Proceedings Supplements
- Journal Volume
- 186
- Journal Page Range
- p. 318-321
- ISSN
- 0920-5632
- CODEN
- NPBSE7
Conference
- Title
- 14. high-energy physics international conference on Quantum ChromoDynamics
- Acronym
- QCD 08
- Dates
- 7-12 Jul 2008
- Place
- Montpellier (France)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40067360
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- DATA ANALYSIS; DISPERSION RELATIONS; KAONS; PARTICLE DECAY; PION-PION INTERACTIONS; SCATTERING; SUM RULES
- Descriptors DEC
- BOSONS; DECAY; ELEMENTARY PARTICLES; EQUATIONS; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; MESON-MESON INTERACTIONS; MESONS; PARTICLE INTERACTIONS; PSEUDOSCALAR MESONS; STRANGE MESONS; STRANGE PARTICLES
Optional Information
- Copyright
- Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.