123024852
Results Of A Scintillating Fiber Preshower Detector For Identifying Electrons Via Synchrotron Radiation
122369339
Electron identification and the detection of synchrotron radiation with a preshower detector
Abstract Results are presented from testbeam measurements made with a scintillating fiber preshower detector. The detector was designed to study the early development of electromagnetic showers and the conversion of synchrotron radiation photons. It was constructed with a 0.5 mm transverse granularity, and eight 0.25 radiation length ( X 0 ) longitudinal samplings. Data were taken with 50 GeV pions and electrons with energies between 10 and 200 GeV. Measurements, for electrons, of both the energy deposited and the shower width as a function of depth are presented in this paper. In addition, data were taken with a 1.8 m long magnet with a 2.5 T field placed directly upstream of the detector and the synchrotron radiation photons, generated by the electrons traversing it, were observed in our detector. Electron identification efficiencies and pion rejection factors based on the synchrotron radiation signal and the energy deposited in the last sampling layer (1.75 X 0 ) are presented.
121664310
Energy and action of the colour fields around static quarks
Abstract Results on the profiles of the confining tube in the energy and action densities are discussed. Lattice sum rules are tested in detail.
123928883
GRAND UNIFICATION AND THE BIG BANG COSMOLOGY
84922592
Bounds on Form Factors and Propagators
123509819
Generalized coherent states and the uncertainty principle
We derive from a dynamical symmetry property that the linear and nonlinear Schrodinger equations with harmonic potential possess an infinite string of shape-preserving coherent wave-packet states with classical motion. Unlike the Schroedinger state with ..delta..x..delta..p = h/2, the uncertainty product can be arbitrarily large for these states showing that classical motion is not necessarily linked with minimum uncertainty. We obtain a generalization of Sudarshan's diagonal coherent-state representation in terms of these states.
124715654
Search for an effect of shell closure on nuclear dissipation via a neutron-multiplicity measurement