K. Strauch

Bio: K. Strauch is an academic researcher from Harvard University. The author has contributed to research in topics: Production (computer science) & Gamma ray. The author has an hindex of 8, co-authored 11 publications receiving 216 citations.

CHARGE EXCHANGE AND PRODUCTION OF eta MESONS AND MULTIPLE NEUTRAL PIONS IN $pi$$sup -$p REACTIONS BETWEEN 654 AND 1247 MeV/c.

Abstract: An experiment designed to study the ${\ensuremath{\pi}}^{\ensuremath{-}}p$ total neutral cross section and its breakdown into several channels has been performed at eleven incident pion momenta ranging from 654 to 1247 MeV/c. Angular distributions for the charge exchange ${\ensuremath{\pi}}^{0}$ and for ${\ensuremath{\eta}}^{0}$ production are given in terms of Legendre-polynomial expansion coefficients. Forward and backward differential cross sections are presented for the charge-exchange channel and comparisons with recent dispersion-relation predictions for the forward cross section are made.

PHOTOPRODUCTION OF HYDROGEN OF /rho/$sup 0$ MESONS BETWEEN THRESHOLD AND 6 Bev

Abstract: Data are presented on the details of the interaction $\ensuremath{\gamma}+p\ensuremath{\rightarrow}p+{\ensuremath{\rho}}^{0}$ observed in a 12-in. hydrogen bubble chamber exposed to a bremsstrahlung photon beam of 6-BeV maximum energy at the Cambridge Electron Accelerator. The energy dependence of the cross sections, the production angular distributions, and the decay angular distributions of the ${\ensuremath{\rho}}^{0}'\mathrm{s}$ are compared with the predictions of the one-pion-exchange (OPE) mechanism and with a diffraction or multiperipheral model proposed by Berman and Drell. These data, as well as a comparison with ${\ensuremath{\omega}}^{0}$ and with ${\ensuremath{\rho}}^{0}+{N}^{*}(1238)$ production, reject the OPE model and favor a diffraction mechanism.

Sum rule for high-energy electron - proton scattering

Abstract: We show that the nonrelativistic quark model leads to an exceptionally simple sum rule involving a form factor determined by high-energy inelastic electron-proton scattering. The simplicity of this result appears to be a unique consequence of the peculiar quark charges.

Dispersion relation constrained partial wave analysis of pi N elastic and pi N ---> eta N scattering data: The Baryon spectrum

Abstract: We present results from a comprehensive partial-wave analysis of pi+-p elastic scattering and charge-exchange data, covering the region from threshold to 2.1 GeV in the lab pion kinetic energy, employing a coupled-channel formalism to simultaneously fit pi-p\to\eta n data to 0.8 GeV. Our main result, solution FA02, utilizes a complete set of forward and fixed-t dispersion relation constraints, from threshold to 1 GeV, and from t = 0 to -0.4 (GeV/c)^2, applied to the piN elastic amplitude. A large number of systematic checks have been performed, including fits with no charge-exchange data and other database changes, fits with few or no dispersion relation constraints, and changes to the Coulomb correction scheme. We have also reexamined methods used to extract Breit-Wigner resonance parameters. The quality of fit to both data and dispersion relation constraints is superior to our earlier work. The results of these analyses are compared with previous solutions in terms of their resonance spectra and preferred values for couplings and low-energy parameters, including the piNN coupling constant.