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Evidence Concerning Pion-Pion Interactions below the 765-Mev Pion-Pion Resonance
Physical Review, 1962A search has been made for pion-pion resonances in the reaction ${\ensuremath{\pi}}^{\ensuremath{-}}+p\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}+{\ensuremath{\pi}}^{0}+p$ at incident pion energies of 871 Mev and 775 Mev, using a sodium-iodide luminescent chamber as a detector. The spectra of ${m}^{*}$, the total energy of the two pions
Lawrence W. Jones +2 more
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Pion in the medium and pion optics
Il Nuovo Cimento A, 1993The description of π-nucleus interaction in the energy region of the Δ-resonance in terms of pion optics is reviewed. From the phenomenological π-optical potential analysis of Masutani and Yazaki it is inferred that the pion dispersion equation cannot be solved perturbatively at the effective nuclear-surface density at which the interaction occurs.
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Il Nuovo Cimento A Series 10, 1966
AnS-matrix calculation is made using theN/D method for the low-energyS-wave π-π scattering. The approximation involves replacing the left-hand cut by two poles whose positions are fixed a priori. Their residues are then determined using the approximate crossing relations at the symmetry point.
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AnS-matrix calculation is made using theN/D method for the low-energyS-wave π-π scattering. The approximation involves replacing the left-hand cut by two poles whose positions are fixed a priori. Their residues are then determined using the approximate crossing relations at the symmetry point.
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Physical Review Letters, 1961
The possibility of using a decay mcde as a test for pi - pi resonance is examined in terms of statistical theory. The annihilation p-bar + n yields pi /sup -/ + pi /sup -/ + pi /sup +/ should be ideal for detecting pi - pi resonances, particularly in the (+ -) correlation. Some pion mass squared distributions are shown for the p-bar + n reaction.
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The possibility of using a decay mcde as a test for pi - pi resonance is examined in terms of statistical theory. The annihilation p-bar + n yields pi /sup -/ + pi /sup -/ + pi /sup +/ should be ideal for detecting pi - pi resonances, particularly in the (+ -) correlation. Some pion mass squared distributions are shown for the p-bar + n reaction.
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Pion-Pion Scattering and Low-Energy Pion Production
Physical Review, 1962A model for the reaction $\ensuremath{\pi}+N\ensuremath{\rightarrow}2\ensuremath{\pi}+N$ at low energies, with $\ensuremath{\pi}\ensuremath{-}\ensuremath{\pi}$ scattering lengths as parameters, discussed in a previous analysis is extended by removing the assumption that $\frac{{a}_{0}}{{a}_{2}}=\frac{5}{2}$. The parameters are determined by using the ${
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