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Workshop on mesons and mesonic states up to slightly above 1 GeV/c{sup 2}

Conference:

Abstract

The new accelerator COSY-Juelich will provide protons with momenta up to 3.3 GeV/c. Thus an effective mass slightly above 1 GeV/c{sup 2} can be produced in the pp-interaction. Employing higher mass targets also heavier mesons can be observed. The production of single mesons and of mesonic states with and without strangeness can be investgated at COSY. The structure of some mesons in the mass range of 950 McV/c{sup 2} to 1020 MeV/c{sup 2} is still not well understood. While the {Phi}(1020) at the upper limit of this range is believed to be of rahter pure santi s nature the content of the {eta}`(958) meson at the lower limit of this range is still under discussion. New results suggest that what is called the f{sub o} meson (former notation S*) consists in reality of two close and narrow states; one of them being a santi s - quarks configuration while the other should be a flavour singlet which couples to {pi}{pi} and Kanti K with similar strengths. Also the discussion on possible gluonium candidates is still alive. It is speculated that some of these mesons - till now supposed to have widths of 30 to 50 MeV/c{sup 2} - could rather  More>>
Authors:
Oelert, W; Sefzick, T [1] 
  1. eds.
Publication Date:
Apr 01, 1991
Product Type:
Conference
Report Number:
Juel-2469; CONF-9002204-
Reference Number:
SCA: 662420; 662340; PA: DEN-92:000310; SN: 92000645189
Resource Relation:
Conference: Workshop on mesons and mesonic states up to slightly above 1 GeV/c{sup 2},Juelich (Germany),19-20 Feb 1990; Other Information: PBD: Apr 1991
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; MESONS; MEETINGS; KERNFORSCHUNGSANLAGE JUELICH; FEDERAL REPUBLIC OF GERMANY; HEAVY ION ACCELERATORS; SYNCHROTRONS; RELATIVISTIC RANGE; PHOTON-PHOTON INTERACTIONS; PHOTOPRODUCTION; MESON-NUCLEON INTERACTIONS; KAON-KAON INTERACTIONS; REST MASS; ETA MESONS; ETA PRIME-958 MESONS; A0-980 MESONS; F0-975 MESONS; OMEGA-783 MESONS; PHI-1020 MESONS; BOUND STATE; COUPLING CONSTANTS; ANNIHILATION; PROTON-ANTIPROTON INTERACTIONS; PARTICLE STRUCTURE; 662420; 662340; PROPERTIES OF MESONS AND MESON RESONANCES; HADRON INTERACTIONS
OSTI ID:
10113913
Research Organizations:
Forschungszentrum Juelich GmbH (Germany). Inst. fuer Kernphysik
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Other: ON: DE92758891; TRN: DE9200310
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
DEN
Size:
213 p.
Announcement Date:
Jun 30, 2005

Conference:

Citation Formats

Oelert, W, and Sefzick, T. Workshop on mesons and mesonic states up to slightly above 1 GeV/c{sup 2}. Germany: N. p., 1991. Web.
Oelert, W, & Sefzick, T. Workshop on mesons and mesonic states up to slightly above 1 GeV/c{sup 2}. Germany.
Oelert, W, and Sefzick, T. 1991. "Workshop on mesons and mesonic states up to slightly above 1 GeV/c{sup 2}." Germany.
@misc{etde_10113913,
title = {Workshop on mesons and mesonic states up to slightly above 1 GeV/c{sup 2}}
author = {Oelert, W, and Sefzick, T}
abstractNote = {The new accelerator COSY-Juelich will provide protons with momenta up to 3.3 GeV/c. Thus an effective mass slightly above 1 GeV/c{sup 2} can be produced in the pp-interaction. Employing higher mass targets also heavier mesons can be observed. The production of single mesons and of mesonic states with and without strangeness can be investgated at COSY. The structure of some mesons in the mass range of 950 McV/c{sup 2} to 1020 MeV/c{sup 2} is still not well understood. While the {Phi}(1020) at the upper limit of this range is believed to be of rahter pure santi s nature the content of the {eta}`(958) meson at the lower limit of this range is still under discussion. New results suggest that what is called the f{sub o} meson (former notation S*) consists in reality of two close and narrow states; one of them being a santi s - quarks configuration while the other should be a flavour singlet which couples to {pi}{pi} and Kanti K with similar strengths. Also the discussion on possible gluonium candidates is still alive. It is speculated that some of these mesons - till now supposed to have widths of 30 to 50 MeV/c{sup 2} - could rather be an overlay of structures with much smaller widths. Another features of resonances in this region is their partial decay into the Kanti K channel if their actual mass is large enough. Strong decays in Kanti K could be a signal of a Kanti K `molecular` nature of the resonance. In particular the atomic K{sup +}K{sup -} structure should exist. In order to have review of the physics related to these problems there was a workshop held on: MESONS and MESONIC STATES up to slightly above 1 GeV/c{sup 2} at the ZEL - Forschungszentrum - Juelich February 19 to 20, 1990. The following contains copies of the shown transparencies and short write-ups as far as available. (orig.).}
place = {Germany}
year = {1991}
month = {Apr}
}