eta, eta-prime --> pi+ pi- l+ l- in a chiral unitary approach

Abstract

The decays eta, eta-prime --> pi+ pi- l+ l- (with l = e, mu) are investigated within a chiral unitary approach which combines the chiral effective Lagrangian with a coupled-channels Bethe-Salpeter equation. Predictions for the decay widths and spectra are given.

arXiv comment22 pages, 7 figures, 5 tables; additional material added and figures 6,7 revised

References in corpus (15)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Chiral dynamics in the presence of bound states: kaon-nucleon interactions revisited
• Large N_c in chiral perturbation theory
• K^- p scattering length from scattering experiments
• Measurement of the pseudoscalar mixing angle and ${\eta }^{\prime }$ gluonium content with KLOE detector
• Dilepton Spectra from Decays of Light Unflavored Mesons
• Hadronic eta and eta-prime decays
• Hadronic decays of eta and eta-prime with coupled channels
• Eta-eta' mixing in U(3) chiral perturbation theory
• Allowed Eta Decay Modes and Chiral Symmetry
• Two-photon decays of pi^0, eta and eta-prime
• Measurement of the eta->pi+pi-e+e- decay branching ratio
• eta, eta-prime -> pi^+ pi^- gamma with coupled channels
• S-wave Meson-Meson Scattering from Unitarized U(3) Chiral Lagrangians

Cited by in corpus (19)

• Physics with the KLOE-2 experiment at the upgraded DA$\varphi$NE
• Precision tests of fundamental physics with $\eta$ and ${\eta }^{\prime }$ mesons
• Measurement of eta meson decays into lepton-antilepton pairs
• Exclusive Measurement of the eta --> pi+ pi- gamma Decay
• Observation of ${\eta }^{\prime }$ decays to ${\pi }^{+}{\pi }^{-}{\pi }^0$ and $π^+π^-\e^+e^-$
• Measurement of the branching ratio and search for a CP violating asymmetry in the eta -> pi+pi-e+e-(gamma) decay at KLOE
• Measurement of ${\eta }^{\prime }\to {\pi }^{+}{\pi }^{-}{e}^{+}{e}^{-}$ and ${\eta }^{\prime }\to {\pi }^{+}{\pi }^{-}{\mu }^{+}{\mu }^{-}$
• An overview of $\eta$ and ${\eta }^{\prime }$ decays at BESIII
• Observation of ${\eta }^{\prime }\to {\pi }^{+}{\pi }^{-}{\mu }^{+}{\mu }^{-}$
• Observation of ${\eta }^{\prime }\to \omega e^{+}{e}^{-}$
• Rare Decays with a Light CP-Odd Higgs Boson in the NMSSM
• Observation of the rare decay of the $\eta$ meson to four muons
• Event generators for $\eta /{\eta }^{\prime }$ decays at BESIII
• Yangian description for decays and possible explanation of $X$ in the decay $K_L^0\to {\pi }^0{\pi }^{0}X$
• Measurement of the Branching Fraction of and Search for a CP-Violating Asymmetry in ${\eta }^{\prime }\to {\pi }^{+}{\pi }^{-}{e}^{+}{e}^{-}$ at BESIII
• $CP$ violation in ${\eta }^{(\prime )}\to {\pi }^{+}{\pi }^{-}{\mu }^{+}{\mu }^{-}$ decays
• Study of $\eta \to {\pi }^{+}{\pi }^{-}{l}^{+}{l}^{-}$
• ${\eta }^{{(}^{\prime })}\to {\pi }^{+}{\pi }^{-}{\gamma }^{(\ast )}$ in large-$N_c$ chiral perturbation theory
• Study of the ${\eta }^{\prime }$ $\to$ $V{e}^{+}{e}^{-}$ decay with hidden local symmetry model