The Radphi experiment at Jefferson Lab

Journal Article · Fri May 01 04:00:00 EDT 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.56079· OSTI ID:647286

Jones, R T ^[1]

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1. University of Connecticut, Storrs, Connecticut (United States)

The scalar mesons, the f{sub 0}(980) and the a{sub 0}(980), have been receiving much attention of late. The low values of their masses and widths bring into question their assignment to the {sup 3}P{sub 0} {bar q}q scalar nonet and recent Crystal Barrel results have uncovered scalar states with more appropriate masses and widths. It has been suggested that the f{sub 0}(980) and the a{sub 0}(980) are molecules or 4-quark states. This talk reviews the theoretical status of these states, and the variety of experimental observations which have a bearing on their interpretation. At JLab (formerly CEBAF), an experiment is underway to look for the rare radiative decays {phi}{r_arrow}f{sub 0}(980){gamma} and {phi}{r_arrow}a{sub 0}(980){gamma} using {phi}{close_quote}s photoproduced from an intense 6GeV photon beam. The ratio of these branching ratios is expected to discriminate between competing models of the substructure of these scalars. The experiment will also measure the poorly-known branching ratio for {phi}{r_arrow}{eta}{sup {prime}}{gamma}. {copyright} {ital 1998 American Institute of Physics.}

• Sponsoring Organization: USDOE
• OSTI ID: 647286
• Report Number(s): CONF-970842--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 432; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
A0-980 MESONS
BRANCHING RATIO
D S MESONS
ETA PRIME-958 MESONS
F0-980 MESONS
MASS SPECTRA
PHI-1020 MESONS
PHOTON BEAMS
PHOTONS
RADIATIVE DECAY