0000000000178521
AUTHOR
V. Kuznetsov
Precise Measurement of the Neutron Magnetic Form FactorGMnin the Few-GeV2Region
The neutron elastic magnetic form factor was extracted from quasielastic electron scattering on deuterium over the range Q;{2}=1.0-4.8 GeV2 with the CLAS detector at Jefferson Lab. High precision was achieved with a ratio technique and a simultaneous in situ calibration of the neutron detection efficiency. Neutrons were detected with electromagnetic calorimeters and time-of-flight scintillators at two beam energies. The dipole parametrization gives a good description of the data.
P-869 - „Two great masqueraders” in a psychiatry clinic - case series of neurosyphilis and neuroborreliosis
Background Neurosyphilis can develop at any stage of syphilis despite of previously recieved treatment, and it can mimic any neuropschychiatric disorder. The psychopathology of neuroborreliosis is less described. Objectives To describe the cases of schizophrenia - like psychosis in patients with these hronic neuroinfections. Methods and materials Retrospective chart review study of five inmates (four with neurosyphilis and one with neuroborreliosis) was performed. Results Psychiatric histories of two females (45 and 49 y.o.) and three males (31, 40, 45 y.o.) are achieved. In four cases they were initially misdiagnosed as paranoid schizophrenia and in one case - as a persistent alcoholic hal…
Inclusive production of ρ0(770), f0(980) and f2(1270) mesons in νμ charged current interactions
The inclusive production of the meson resonances $\rho^{0}(770)$, $f_0(980)$ and $f_2(1270)$ in neutrino-nucleus charged current interactions has been studied with the NOMAD detector exposed to the wide band neutrino beam generated by 450 GeV protons at the CERN SPS. For the first time the $f_{0}(980)$ meson is observed in neutrino interactions. The statistical significance of its observation is 6 standard deviations. The presence of $f_{2}(1270)$ in neutrino interactions is reliably established. The average multiplicity of these three resonances is measured as a function of several kinematic variables. The experimental results are compared to the multiplicities obtained from a simulation b…
Search for a new gauge boson in $\pi^{0}$ decays
A search was made for a new light gauge boson $X$ which might be produced in $\pi^{0}\to\gamma + X$ decay from neutral pions generated by 450-GeV protons in the CERN SPS neutrino target. The X's would penetrate the downstream shielding and be observed in the NOMAD detector via the Primakoff effect, in the process of $X \to\pi^{0}$ conversion in the external Coulomb field of a nucleus. With $1.45\times10^{18}$ protons on target, 20 candidate events with energy between 8 and 140 GeV were found from the analysis of neutrino data. This number is in agreement with the expectation of 18.1$\pm$2.8 background events from standard neutrino processes. A new 90% C.L. upper limit on the branching ratio…