@Article{BABARCollaborationLees_etal2016,
author="BABAR Collaboration (Lees, J. P. et al
and Martinez-Vidal, F.
and Oyanguren, A.",
title="Measurement of the I=1/2 K pi S-wave amplitude from Dalitz plot analyses of eta(c) -> K(K)over-bar pi in two-photon interactions",
journal="Physical Review D",
year="2016",
publisher="Amer Physical Soc",
volume="93",
number="1",
pages="012005--16pp",
abstract="We study the processes gamma gamma -> (KSK +/-)-K-0 pi(-/+) and gamma gamma -> K+K-pi(0) using a data sample of 519 fb(-1) recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e(+)e(-) collider at center-of-mass energies at and near the Upsilon(nS) (n = 2, 3, 4) resonances. We observe eta(c) decays to both final states and perform Dalitz plot analyses using a model-independent partial wave analysis technique. This allows a model-independent measurement of the mass-dependence of the I = 1/2 K pi S-wave amplitude and phase. A comparison between the present measurement and those from previous experiments indicates similar behavior for the phase up to a mass of 1.5 GeV/c(2). In contrast, the amplitudes show very marked differences. The data require the presence of a new a(0)(1950) resonance with parameters m = 1931 +/- 14 +/- 22 MeV/c(2) and Gamma = 271 +/- 22 +/- 29 MeV.",
optnote="WOS:000368515900001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2536), last updated on Thu, 11 Feb 2016 10:35:52 +0000",
issn="1550-7998",
doi="10.1103/PhysRevD.93.012005",
opturl="http://arxiv.org/abs/1511.02310",
opturl="https://doi.org/10.1103/PhysRevD.93.012005",
archivePrefix="arXiv",
eprint="1511.02310",
language="English"
}