Scalar mesons in a linear sigma model with (axial-)vector mesons

Journal Article · Mon Mar 25 00:00:00 EDT 2013 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4795961· OSTI ID:22113556

Parganlija, D. ^[1]; Kovacs, P.; Wolf, Gy. ^[2]; Giacosa, F.; Rischke, D. H. ^[3]

---

1. Institute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstr. 8-10, A-1040 Vienna (Austria)
2. Institute for Particle and Nuclear Physics, Wigner Research Center for Physics, Hungarian Academy of Sciences, H-1525 Budapest (Hungary)
3. Institute for Theoretical Physics, Johann Wolfgang Goethe University, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main (Germany)

The structure of the scalar mesons has been a subject of debate for many decades. In this work we look for qq states among the physical resonances using an extended Linear Sigma Model that contains scalar, pseudoscalar, vector, and axial-vector mesons both in the non-strange and strange sectors. We perform global fits of meson masses, decay widths and amplitudes in order to ascertain whether the scalar qq states are below or above 1 GeV. We find the scalar states above 1 GeV to be preferred as qq states.

• OSTI ID: 22113556
• Journal Information: AIP Conference Proceedings, Vol. 1520, Issue 1; Conference: 12. international workshop on hadron physics, Bento Goncalves, Rio Grande do Sul (Brazil), 22-27 Apr 2012; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
AXIAL VECTOR MESONS
AXIOMATIC FIELD THEORY
GEV RANGE
NONLINEAR PROBLEMS
PARTICLE DECAY
PARTICLE WIDTHS
QUARK MODEL
QUARKS
RESONANCE PARTICLES
REST MASS
SCALAR MESONS
SIGMA MODEL