Now showing items 1-10 of 196
Obtaining real parts of scattering amplitudes directly from cross section data using derivative analyticity relations
(Elsevier, 1974-04-15)
We show that one can obtain real parts of scattering amplitudes by knowing the imaginary parts at only nearby energies. This is accomplished by re-casting the dispersion integral into an equivalent form which we will calla ...
Euclidean Fermi fields with a hermitean Feynman-Kac-Nelson formula. I
(Springer-Verlag, 1974-03)
We construct free, Euclidean, spin one-half, quantum fields with the following properties: (i) CAR; (ii) Symanzik positivity; (iii) Osterwalder-Schrader positivity; (iv) no doubling of particle or spin states. They admit ...
Absence of goldstino decoupling in hierarchical superunified models
(Elsevier, 1983-08-25)
It is shown that there exist a class of hierarchical supersymmetric unified models in which the Goldstino field does not decouple from that light states. We illustrate this with an SUN model. The phenomenology and cosmology ...
Measurement of upper limits for the decay widths of D*+ and D*0
(Elsevier, 1988-10-06)
Upper limits for the decay widths of the D*+ and D*0 mesons have been measured using data from e+e- annihilations at [radical sign]s=29 GeV obtained with the High Resolution Spectrometer at PEP. We find [Gamma]D*+ c2 at ...
The elastic energy-momentum tensor in special relativity
(Elsevier, 1989-12)
We consider the standard nonrelativistic theory of a continuous, elastic medium with finite deformations, according to which the elastic energy is a function only of the state of strain, and the elastic stress tensor is ...
Alternative equations of motion for the radiating electron
(Springer-Verlag, 1995-02)
We have previously written down a simple second-order equation for the radiating electron and pointed out that its solutions are well behaved. A key feature of this equation is the presence of a term involving the time ...
Comparison of high energy neutron-nucleus total cross sections with theory
(Elsevier, 1976-06-07)
A recent paper by Julius purports to show that previous estimates of the effect of inelastic screening on neutron-nucleus total cross sections are much too large. However, we show that most of this discrepancy is due to ...
Supersymmetry and parastatistics
(Elsevier, 1983-08-25)
An analysis is made of the supersymmetry of parafields in Wess-Zumino-type models with two cases in which parabosons and parafermions form a supermultiplet. In case one the symmetry is realized by either the normal ...
Anomalous pp events and decay of new types of quark matter into e+e-
(Elsevier, 1984-11-15)
We analyze the consequences of the proposal by Glashow that monojet events observed by UA1 are related to a new form of quark matter. We find that this idea requires the production of about 2 e+e-, 2 [mu]+[mu]- and 2 [gamma] ...
On Travelling Waves for the Stochastic Fisher–Kolmogorov–Petrovsky–Piscunov Equation
(Kluwer Academic Publishers-Plenum Publishers; Springer Science+Business Media, Inc., 2005-08)
This paper is concerned with properties of the wave speed for the stochastically perturbed Fisher–Kolmogorov–Petrovsky–Piscunov (FKPP) equation. It was shown in the classical 1937 paper by Kolmogorov, Petrovsky and Piscunov ...