Volume 21, Issue 25

Jean Alitti, Virgil E. Barnes, David J. Crennell, Enzo Flaminio, Marvin Goldberg, Uri Karshon, Kwan Wu Lai, Wesley J. Metzger, John S. O'Neall, Nicholas P. Samios, J. Michael Scarr, and Thomas G. Schumann

Phys. Rev. Lett. 21, 1705 (1968) - Published 16 December, 1968

Search for Muonium-Antimuonium Conversion

J. J. Amato, P. Crane, V. W. Hughes, J. E. Rothberg, and P. A. Thompson

Phys. Rev. Lett. 21, 1709 (1968) - Published 16 December, 1968

Four-Pion Decay of the $f^{0}$ Meson

G. Ascoli, H. B. Crawley, D. W. Mortàra, and A. Shapiro

Phys. Rev. Lett. 21, 1712 (1968) - Published 16 December, 1968

Electromagnetic Decay of the ${Y_{0}}^{*} (1520)$

Terry S. Mast, Margaret Alston-Garnjost, Roger O. Bangerter, Angela Barbaro-Galtieri, Lawrence K. Gershwin, Frank T. Solmitz, and Robert D. Tripp

Phys. Rev. Lett. 21, 1715 (1968) - Published 16 December, 1968

Cross Sections for the Reactions $\bar{p} p \to π^{+} π^{-}$ and $K^{+} K^{-}$ Near 2 GeV/c

J. W. Chapman, F. Hess, J. Lys, C. T. Murphy, and J. C. Vander Velde

Phys. Rev. Lett. 21, 1718 (1968) - Published 16 December, 1968

Direct Evidence for the Multiplet Assignments of $Λ (1520)$ and $Λ (1405)$

Robert D. Tripp, Roger O. Bangerter, Angela Barbaro-Galtieri, and Terry S. Mast

Phys. Rev. Lett. 21, 1721 (1968) - Published 16 December, 1968

Veneziano Formula with Trajectories Spaced by Two Units

Stanley Mandelstam

Phys. Rev. Lett. 21, 1724 (1968) - Published 16 December, 1968

ERRATA

Enhanced Superconductivity in Layered Metallic Films

Myron Strongin, O. F. Kammerer, J. E. Crow, R. D. Parks, D. H. Douglass, Jr., and M. A. Jensen

Phys. Rev. Lett. 21, 1728 (1968) - Published 16 December, 1968

$K^{+} d$ Partial Cross Sections Around 1 BeV/c

Allen A. Hirata, Charles G. Wohl, Gerson Goldhaber, and George H. Trilling

Phys. Rev. Lett. 21, 1728 (1968) - Published 16 December, 1968

Physical Review Letters

Volume 21, Issue 25

LETTERS

Diffusion of Electron Plasma Oscillations in a Large-Amplitude Ion-Wave Background

PbTe Debye-Waller Factors and Band-Gap Temperature Dependence

Spatial Effects in the Theory of the Phonon Avalanche

Magnetoreflection Dichroism of the Low-Energy Exciton of RbI

Multipole Field Effects in Donor-Acceptor Spectra of GaP

Transverse Hall Effect in the Electric Quantum Limit

Spectroscopic Determination of the Magnon Density of States of Gd ${Cl}_{3}$ , a Ferromagnetic Rare-Earth Salt

Binding Energies and Two-Particle Spectra

High-Energy Pickup Reactions and Nuclear Correlations

Detection of N $H_{3}$ Molecules in the Interstellar Medium by Their Microwave Emission

Evidence for the ${K_{1}}^{0} {K_{1}}^{0}$ Enhancement Near Threshold Produced by $K^{-} N$ Interactions