[en] Experimental data on πN scattering in the elastic energy region w ≤ 1.45 GeV are analyzed within the K-matrix approach with effective lagrangians. The charge splitting in δ₃₃⁺⁺ and δ₃₃⁰ phases obtained in the phase-shift analisys is studed. It is shown that the change in the sign in the energy dependence of the phase difference can be obtained with different form factors of the Δ⁺⁺ and Δ⁰ only. This means that πNΔ⁺⁺ and πNΔ⁰ interactions have a different range. The underlying nature of the observed phenomena is discussed.

[en] K⁺ -meson production in pA (A=C,Cu,Au) collisions has been studied using the ANKE spectrometer at an internal target position of the COSY-Juelich accelerator. The complete momentum spectrum of kaons emitted at forward angles, θ≤12^o, has been measured for a beam energy of T_p=1.0 GeV , far below the free NN threshold of 1.58GeV. The spectrum does not follow a thermal distribution at low kaon momenta and the larger momenta reflect a high degree of collectivity in the target nucleus

[en] The main achievements in the chemistry of palladium-catalysed amination of chloroarenes are discussed. The general mechanism of the Buchwald-Hartwig reaction and the main types of catalytic systems used for the amination of aryl and hetaryl chlorides are considered

No abstract available

[en] Measured values of the differential cross section for pion-nucleon charge exchange, π^-p→π⁰n, are presented at π^- momenta of 148, 174, 188, 212, 238, 271, 298, and 323 MeV/c, a region dominated by the Δ(1232) resonance. Complete angular distributions were obtained using the Crystal Ball detector at the Alternating Gradient Synchrotron (AGS) at Brookhaven National Laboratory (BNL). Statistical uncertainties of the differential cross sections are typically 2-6 %, exceptions being the results at the lowest momentum and at the most forward measurements at the five lowest momenta. We estimate the systematic uncertainties to be 3-6 %

[en] We report the first measurements of the total cross section of the reaction K^-p→Σ⁰γ at eight beam momenta from 514 to 750 MeV/c. The data were obtained at the Alternating Gradient Synchrotron (AGS) at Brookhaven National Laboratory using the Crystal Ball detector consisting of 672 NaI crystals. All charged particles were vetoed by a barrel of plastic scintillators, resulting in a study of only the neutral decays of the Σ⁰. The prompt photon and the photons from the decay products of Σ⁰ were detected for each reconstructed event; the neutron was also detected in a small fraction of the events

[en] Measured values of the differential cross sections for pion-nucleon charge exchange, π^-p→π⁰n, are presented for π^- momenta of 103,112,120,130,139,152, and 178 MeV/c. Complete angular distributions were obtained by using the Crystal Ball detector at the Alternating Gradient Synchrotron at Brookhaven National Laboratory. Statistical uncertainties of the differential cross sections vary from 3 to 6% in the backward angle region and from 6 to about 20% in the forward region with the exception of the two most forward angles. The systematic uncertainties are estimated to be about 3% for all momenta.

[en] The reaction K^-p→Σ⁰π⁰→ neutrals was studied with the Crystal Ball detector at the BNL Alternating Gradient Synchrotron for beam momenta between 514 and 750 MeV/c. The photons from Σ⁰ and π⁰ decays were detected, as well as the neutron in a small fraction of the events. The differential cross section and the Σ⁰ polarization are reported at eight momenta and nearly the full angular range. Total cross sections are derived from Legendre polynomial fits to the data. The measurements presented are of considerably higher precision than previous results

[en] Published in summary form only

[en] A universal or the study o three dipole magnets. This 0 Facility will separate ejectiles or positively and negatively charged particles. A major goal o the K⁺-meson production at projectile energies below the NN thershold. The detector concept urther planned experiments is given. (orig.)