@Article{Dai_etal2018,
author="Dai, L. Y.
and Kang, X. W.
and Meissner, U. G.
and Song, X. Y.
and Yao, D. L.",
title="Amplitude analysis of the anomalous decay eta {\textquoteright} -> pi(+) pi(-) gamma",
journal="Physical Review D",
year="2018",
publisher="Amer Physical Soc",
volume="97",
number="3",
pages="036012--12pp",
abstract="In this paper we perform an amplitude analysis of eta {\textquoteright} -> pi(+)pi(-)gamma and confront it with the latest BESIII data. Based on the final-state interaction theorem, we represent the amplitude in terms of an Omnes function multiplied by a form factor that corresponds to the contributions from left-hand cuts and right-hand cuts in the inelastic channels. We also take into account the isospin violation effect induced by rho-omega mixing. Our results show that the anomaly contribution is mandatory in order to explain the data. Its contribution to the decay width of Gamma(eta {\textquoteright} -> pi pi gamma) is larger than that induced by isospin violation. Finally we extract the pole positions of the rho and omega as well as their corresponding residues.",
optnote="WOS:000424904000003",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3489), last updated on Mon, 26 Feb 2018 15:49:10 +0000",
issn="2470-0010",
doi="10.1103/PhysRevD.97.036012",
opturl="http://arxiv.org/abs/1712.02119",
opturl="https://doi.org/10.1103/PhysRevD.97.036012",
archivePrefix="arXiv",
eprint="1712.02119",
language="English"
}