INELASTIC SCATTERING AMPLITIJDES”
New results from inelastic two-body scattering reactions are reviewed. Although predictions of SU(3), factorization and simple Regge theory are found to be qualitatively in agreement with the data, direct channel or absorption effects afford the simplest interpretation of the detailed features of the scattering amplitudes.
A determination of the effective B and ϱ trajectories from the reaction π+p→ωΔ++
Abstract We present results of two high-statistics bubble chamber measurements of the reaction π + → ω 0 Δ ++ at incident momenta of 2.67 and 7.1 GeV/ c . The energy dependence of the natural parity exchange projection gives a Regge trajectory consistent with the accepted ϱ trajectory. The unnatural parity exchange projection gives a B trajectory consistent with our current knowledge of the pion trajectroy.
Definitions of efficiency
This is the third in a series of occasional notes on economics

Decision makers are increasingly faced with the challenge of reconciling growing demand for health care services with available funds.1 Economists argue that the achievement of (greater) efficiency from scarce resources should be a major criterion for priority setting. This note examines three concepts of efficiency: technical, productive, and allocative.

Efficiency measures whether healthcare resources are being used to get the best value for money.1 Health care can be seen an intermediate product, in the sense of being a means to the end of improved health. Efficiency is concerned with the relation between resource inputs (costs, in the form of labour, capital, or equipment) and either intermediate outputs (numbers treated, waiting time, etc) or final health outcomes (lives saved, life years gained, quality adjusted life years (QALYs)). Although many evaluations use intermediate outputs as a measure of effectiveness, this can …