%0 Journal Article
%T Revising the f(1)(1420) resonance
%A Debastiani, V. R.
%A Aceti, F.
%A Liang, W. H.
%A Oset, E.
%J Physical Review D
%D 2017
%V 95
%N 3
%I Amer Physical Soc
%@ 2470-0010
%G English
%F Debastiani_etal2017
%O WOS:000393944900004
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3016), last updated on Fri, 07 Apr 2017 09:54:35 +0000
%X We have studied the production and decay of the f(1) (1285) into pi a(0)(980) and K* (K) over bar as a function of the mass of the resonance and find a shoulder around 1400 MeV, tied to a triangle singularity, for the pi a(0)(980) mode, and a peak around 1420 MeV with about 60 MeV width for the K* (K) over bar mode. Both of these features agree with the experimental information on which the f(1)(1420) resonance is based. In addition, we find that if the f(1)(1420) is a genuine resonance, coupling mostly to K* (K) over bar as seen experimentally, one finds unavoidably about a 20% fraction for pi a(0)(980) decay of this resonance, in drastic contradiction with all experiments. Altogether, we conclude that the f(1)(1420) is not a genuine resonance, but the manifestation of the pi a(0)(980) and K* (K) over bar decay modes of the f(1)(1285) at higher energies than the nominal one.
%R 10.1103/PhysRevD.95.034015
%U http://arxiv.org/abs/1611.05383
%U https://doi.org/10.1103/PhysRevD.95.034015
%P 034015-10pp