Published April 2, 1992 | Version v1
Journal article

Observation of f1(1285)→π+π-π+π- in radiative J/ψ decays

  • 1. Stanford Linear Accelerator Centre, Stanford Univ., CA (United States)
  • 2. Dept. of Physics, Univ. Washington, Seattle, WA (United States)
  • 3. Santa Cruz Inst. for Particle Physics, Univ. California, CA (United States)
  • 4. Dept. of Physics, California Inst. of Tech., Pasadena, CA (United States)
  • 5. Dept. of Physics, Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
  • 6. Dept. of Physics, Univ. Iowa, Iowa City, IA (United States)

Description

We present an analysis of J/ψ→γf1(1285), f1(1285)→π+π-π+π-, using the Mark III detector at SPEAR, based on 5.8x106 produced J/ψ events. We measure B(J/ψ→γf1(1285), f1(1285)→π+π-π+π-)=(4.8±1.3±0.9)x10-5. We obtain a new measurement of the absolute branching ratio of J/ψ→γf1(1285). The mixing angle of the f1(1285) and the f1(1420) in the 1++ nonet is determined. (orig.)

Additional details

Publishing Information

Journal Title
Physics Letters. Section B
Journal Volume
278
Journal Issue
4
Series
Phys. Lett., Sect. B.
Journal Page Range
495-498
ISSN
0370-2693
CODEN
PYLBA