Observation of spin-1 f/sub 1/(1285) in the reaction. gamma gamma. *. -->. eta/sup 0/. pi. /sup +/. pi. /sup -/

Journal Article · Mon Nov 02 04:00:00 EST 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.59.2012· OSTI ID:5742733

Gidal, G; Boyer, J; Butler, F; Cords, D; Abrams, G S; Amidei, D; Baden, A R; Barklow, T; Boyarski, A M; Burchat, P

We observe both the J/sup P//sup C/ = 1/sup + +/ f/sub 1/(1285) and the J/sup P//sup C/ = 0/sup - +/ eta'(958) in tagged two-photon interactions and the eta'(958) in untagged interactions. The measured Q/sup 2/ dependence and decay distribution support the f/sub 1/(1285) spin and parity assignment. The radiative width of the f/sub 1/(1285) is measured as (M/sup 2//Q/sup 2/)GAMMA/sub ..gamma..//sub ..gamma..//sub */ = 9.4 +- 2.5 +- 1.7 keV, on the assumption of a rho-pole form factor.

• Research Organization: Lawrence Berkeley Laboratory and Department of Physics, University of California, Berkeley, California 94720
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5742733
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 59:18; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BASIC INTERACTIONS
BOSONS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ETA MESONS
ETA-958 RESONANCES
F-1260 RESONANCES
FORM FACTORS
HADRONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LINEAR MOMENTUM
MASS SPECTRA
MESONS
PARITY
PARTICLE IDENTIFICATION
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PEP STORAGE RINGS
PHOTON-PHOTON INTERACTIONS
PIONS
PIONS MINUS
PIONS PLUS
PSEUDOSCALAR MESONS
RADIATIVE DECAY
SPECTRA
SPIN
STORAGE RINGS
TRANSVERSE MOMENTUM