90 24 v 1 8 S ep 2 00 0 η Production in Hadronic Interactions

X iv : h ep - p h / 03 01 05 8 v 1 9 J an 2 00 3 Hadronic decays of η and η ′ with coupled channels 1

The hadronic decays η → πππ, η ′ → πππ and η ′ → ηππ are investigated within a U (3) chiral unitary approach. Final state interactions are included by deriving the effective s-wave potentials for meson meson scattering from the chiral effective Lagrangian and iterating them in a Bethe-Salpeter equation. With only a small set of parameters we are able to explain both rates and spectral shapes of...

ar X iv : h ep - p h / 00 12 24 8 1 9 D ec 2 00 0 1 The Naked Truth about Hadronic Regge Trajectories A . E .

ar X iv : h ep - p h / 98 06 20 9 v 1 1 J un 1 99 8 Exclusive Hadronic D Decays to η ′ and η

Hadronic decay modes D0 → (K, K)η() and (D+,D+ s ) → (π+, ρ+)η( ) are studied in the generalized factorization approach. Form factors for (D,D+ s ) → (η, η′) transitions are carefully evaluated by taking into account the wave function normalization of the η and η′. The predicted branching ratios are generally in agreement with experiment except for D0 → Kη′, D+ → π+η and D+ s → ρ+η′; the calcul...

ar X iv : h ep - e x / 02 08 00 8 v 1 7 A ug 2 00 2 1 B 0 s Oscillation Results

BBd) is estimated to be 1.18 ± 0.04 −0.00 from Lattice QCD [3]. This implies that the ratio |Vts/Vtd| can be determined with an uncertainty smaller than that for |Vtd| [4]. In the Wolfenstein parameterization of the CKM matrix, we have ∆md ∝ |Vtd| 2 ≃ Aλ[(1 − ρ) + η] and ∆ms ∝ |Vts| 2 ≃ Aλ, where λ = 0.2237 ± 0.0033 and A = 0.819 ± 0.040 [5], but ρ and η are not well known. Studies of B d and B...

ar X iv : h ep - l at / 0 20 90 64 v 1 4 S ep 2 00 2 1 Recent results using all - point quark propagators

Pseudofermion methods for extracting all-point quark propagators are reviewed, with special emphasis on techniques for reducing or eliminating autocorrelations induced by low eigenmodes of the quark Dirac operator. Recent applications, including high statistics evaluations of hadronic current correlators and the pion form factor, are also described.