ar X iv : h ep - p h / 00 05 10 6 v 1 1 1 M ay 2 00 0 Weak - Interaction Evidence for a Broad σ ( 500 - 600 ) Resonance

ar X iv : h ep - p h / 00 05 10 6 v 3 2 2 M ay 2 00 2 Footprints of a Broad σ ( 600 ) in Weak - Interaction Processes

We explore how chiral-symmetry constraints on weak-interaction matrix elements point toward the existence of an intermediate-state σ in several different weak-interaction processes. Particular attention is directed toward recent evidence for a σ within three-body nonleptonic weak decays. PACS numbers: 11.30.Rd, 11.40.Ha, 14.40.Cs HIP-2000-22/TH The existence of a broad scalar-isoscalar ππ reson...

ar X iv : h ep - p h / 06 05 13 6 v 1 1 1 M ay 2 00 6 Lepton Flavor Violating τ and μ decays

ar X iv : h ep - p h / 06 05 34 0 v 1 3 1 M ay 2 00 6 Neutrino scattering as a probe for the strange content of the nucleon ∗

We consider different methods and observables which can be obtained by the measurement of neutrino scattering off nucleons and nuclei with the purpose of finding evidence for the strange form factors of the nucleon, which enter into structure of the nucleonic weak neutral current.

ar X iv : h ep - p h / 02 05 01 6 v 1 2 M ay 2 00 2 Scalar a 0 ( 980 ) meson in φ → π 0 ηγ decay

ar X iv : h ep - p h / 05 05 16 1 v 1 1 8 M ay 2 00 5 Productions of σ meson in J / ψ and ψ ( 2 s ) decays Bing

Productions of σ meson in J/ψ and ψ(2s) decays Abstract Productions of scalar meson(σ) in the decays of J/ψ → ω + σ,J/ψ → γ + σ and ψ(2s) → ω + σ, J/ψ + σ, γ + σ and ee + annihilations in the regions of J/ψ and ψ are studied 1