Journal article
f1(1285) formation in two-photon collisions at LEP
Abstract
The ηπ+π− final state in two-photon collisions is studied with the L3 detector at LEP, at centre-of-mass energies from 183 to 209 GeV with an integrated luminosity of 664.6 pb−1. The f1(1285) meson is observed and the Q2 dependence of its production is compared to different form factor models. The γγ-coupling parameter Γγγ is found to be 3.5±0.6(stat.)±0.5(sys.) keV. The branching fraction Γ(f1(1285)→a0π)/Γ(f1(1285)→ηππ) is also measured.
Authors
Collaboration L; Achard P; Adriani O; Aguilar-Benitez M; Alcaraz J; Alemanni G; Allaby J; Aloisio A; Alviggi MG; Anderhub H
Journal
Physics Letters B, Vol. 526, No. 3-4, pp. 269–277
Publisher
Elsevier
Publication Date
February 2002
DOI
10.1016/s0370-2693(01)01477-0
ISSN
0370-2693