The phi(1020) a0(980) S-wave scattering and hints for a new vector-isovector resonance

Abstract

We have studied the phi(1020)a0(980) S-wave scattering at threshold energies employing chiral Lagrangians coupled to vector mesons by minimal coupling. The interaction is described without new free parameters by considering the scalar isovector a0(980) resonance as dynamically generated in coupled channels, and demanding that the recently measured e+ e- -> phi(1020) f0(980) cross section is reproduced. For some realistic choices of the parameters, the presence of a dynamically generated isovector companion of the Y(2175) is revealed. We have also investigated the corrections to the e+ e- -> phi(1020) pi0 eta reaction cross section that arise from phi(1020)a0(980) re-scattering in the final state. They are typically large and modify substantially the cross section. For a suitable choice of parameters, the presence of the resonance would manifest itself as a clear peak at sqrt{s}~2.03 GeV in e+ e- -> phi(1020) pi0 eta.

16 pages, 9 figures, 2 tables

References in corpus (33)

• Chiral dynamics in the presence of bound states: kaon-nucleon interactions revisited
• Chiral Symmetry Amplitudes in the S-Wave Isoscalar and Isovector Channels and the σ, f_0(980), a_0(980) Scalar Mesons
• Chiral symmetry amplitudes in the s-wave isoscalar and isovector channels and the $\sigma ,f_0(980),a_0(980)$ scalar mesons
• Meson-Meson interaction in a non-perturbative chiral approach
• N/D Description of Two Meson Amplitudes and Chiral Symmetry
• On the structure of the scalar mesons $f_0(975)$ and $a_0(980)$
• Low lying axial-vector mesons as dynamically generated resonances
• Hybrid and Conventional Mesons in the Flux Tube Model: Numerical Studies and their Phenomenological Implications
• Strong Decays of Strange Quarkonia
• Identification of a Scalar Glueball
• A Structure at 2175 MeV in $e^{+}{e}^{-}\to \varphi f_0(980)$ Observed via Initial-State Radiation
• X(2175) as a resonant state of the $\varphi K\bar{K}$ system
• New Hadron States
• Observation of Y(2175) in $J/\psi \to \eta \varphi f_0(980)$
• Analysis of Y(2175) as a tetraquark state with QCD sum rules
• The $e^{+}{e}^{-}\to K^{+}{K}^{-}{\pi }^{+}{\pi }^{-}$, $K^{+}{K}^{-}{\pi }^0{\pi }^0$ and $K^{+}{K}^{-}{K}^{+}{K}^{-}$ Cross Sections Measured with Initial-State Radiation
• Observation of the $\varphi (1680)$ and the Y(2175) in $e^{+}{e}^{-}\to \varphi {\pi }^{+}{\pi }^{-}$
• A Candidate for $1^{--}$ Strangeonium Hybrid
• Y(2175): Distinguish Hybrid State from Higher Quarkonium
• Higher Tetraquark Particles
• Theoretical Study of the γγ-->meson-meson Reaction
• Final State Interactions in Hadronic D decays
• The Mixing Angle of the Lightest Scalar Nonet
• The Y(2175) State in the QCD Sum Rule
• On the ϕ(1020)f_0(980) S-wave scattering and the Y(2175) resonance
• The Case of a WW Dynamical Scalar Resonance within a Chiral Effective Description of the Strongly Interacting Higgs Sector
• Finite width effects in ϕradiative decays
• $\eta \to {\pi }^0\gamma \gamma$ decay within unitarized chiral perturbation theory
• Multichannel calculation of excited vector $\varphi$ resonances and the $\varphi (2170)$
• The S-wave Λπphase shift is not large
• ϕK^{+}K^{-} production in electron-positron annihilation
• Meson-meson interactions and Regge propagators
• Is there an isovector companion of the X(2175)?

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