We calculate the long distance contribution to D +,0 → π +,0 l + l − decays by the use of a vector meson dominance model, in which the φ-meson plays the central role. The branching ratios obtained are 10 −6 and a few times 10 −7 for the resonance and non-resonance regions respectively. The analysis includes a calculation of D + → π + φ, consistent with the experimental value.

The report is a description of the analysis of the 23gPu neutron cross-sections in .the resolved resonance region at ORNL using the multilevel-multichannel Reich-Moore code SAMMY. The a resonance parameters were obtained in the energy range 0 eV to

We formulate a quasi-particle random phase approximation (QRPA) in the coordinate space representation. This model is a natural extension of the RPA model of Shlomo and Bertsch to open-shell nuclei in order to take into account pairing correlations together with the coupling to the continuum. We apply it to the 120Sn nucleus and show that low-lying excitation modes are significantly influenced ...

The predictions of an isospin model are compared with the branching ratios of the 5 and 6 pion decays of the tau lepton. In both cases, the isospin model suggests that the tau favours decays in which there is an ω resonance. Recent measurements of such tau decays confirm this hypothesis. If the decay of the tau to 7 pions also proceeds through an intermediate ω, then the isospin model predicts ...

Based on the Weinberg lagrangian or, in a new language, the lagrangian of hidden local symmetry added with the term induced by the anomalous lagrangian of Wess and Zumino, the dynamics of the decays ρ → 4π and ω → 5π is considered. The excitation curves of ρ resonance in its decay to 4π are obtained for the first time. The comparison with recent CMD-2 data is given.

For the first time the e+e− spectroscopy study was performed in Novosibirsk in 60th at the VEPP-2 collider. The shape of the ρ(770) resonance have been measured [1]. Since a lot of different experiments for spectroscopy have been done [2] and as a rule the most precise data on vector meson parameters were obtained in e+e− production. The current status of the vector meson spectroscopy is as fol...

This study follows in the tradition of research into the relationship between teachers’ espoused beliefs and their enacted practices (Beswick, 2007; Skott, 2009; Thompson, 1984). It draws on a multiple case study of the whole class interactive phases of the mathematics lessons of six English primary teachers and the rationales they offer for their actions. The data yielded two distinct groups o...

We study wavespeed selection in a staged invasion process. That is, we study a model in which an unstable homogeneous state is replaced via an invading front with a secondary state. This secondary state is also unstable and, in turn, replaced by a stable homogeneous state via a secondary invasion front. In particular, we are interested in the selected wavespeed of the secondary front and under ...

The Particle Data Group decided to split the η(1440) into two states, called ηL and ηH . The η(1295) and the ηH are supposed to be the radial excitations of the η and η, respectively. The ηL state cannot be accomodated in a quark model; it cannot be a qq̄ state, however, it might be a glueball. In this contribution it is shown that that the η(1295) does not have the properties which must be expe...