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 00:00:00 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), Vol. 59:18
• Country of Publication: United States
• Language: English

Related Subjects

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