TY  - JOUR
AU  - Debastiani, V. R.
AU  - Aceti, F.
AU  - Liang, W. H.
AU  - Oset, E.
PY  - 2017
DA  - 2017//
TI  - Revising the f(1)(1420) resonance
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 034015
EP  - 10pp
VL  - 95
IS  - 3
PB  - Amer Physical Soc
AB  - 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.
SN  - 2470-0010
UR  - http://arxiv.org/abs/1611.05383
UR  - https://doi.org/10.1103/PhysRevD.95.034015
DO  - 10.1103/PhysRevD.95.034015
LA  - English
N1  - WOS:000393944900004
ID  - Debastiani_etal2017
ER  -