Volume 29, Issue 25

J. W. Chapman, N. Green, B. P. Roe, A. A. Seidl, D. Sinclair, J. C. Vander Velde, C. M. Bromberg, D. Cohen, T. Ferbel, P. Slattery, S. Stone, and B. Werner

Phys. Rev. Lett. 29, 1686 (1972) - Published 18 December, 1972

Production of Charged $A_{2}$ Mesons at 4 $\frac{BeV}{c}$

C. M. Ankenbrandt, B. B. Brabson, R. R. Crittenden, R. M. Heinz, J. C. Krider, J. E. Mott, H. A. Neal, and A. J. Pawlicki

Phys. Rev. Lett. 29, 1688 (1972) - Published 18 December, 1972

Resonant Spin Rotation—a New Lepton $g - 2$ Technique

G. W. Ford, James L. Luxon, Arthur Rich, John C. Wesley, and V. L. Telegdi

Phys. Rev. Lett. 29, 1691 (1972) - Published 18 December, 1972

Possible Existence of a New Y Resonance at 1930 MeV

S. Dado, A. Birman, J. Goldberg, and H. Weiss

Phys. Rev. Lett. 29, 1695 (1972) - Published 18 December, 1972

Approximate Symmetries and Pseudo-Goldstone Bosons

Steven Weinberg

Phys. Rev. Lett. 29, 1698 (1972) - Published 18 December, 1972

Precise Test of SU(2) Chiral Breaking. A Coleman-Glashow Formula for Pseudoscalar Mesons

G. Cicogna, F. Strocchi, and R. Vergara-Caffarelli

Phys. Rev. Lett. 29, 1702 (1972) - Published 18 December, 1972

Cusps, Dips, and Resonances

G. T. Hoff

Phys. Rev. Lett. 29, 1705 (1972) - Published 18 December, 1972

Why Does the Pomeranchuk Singularity Have a Unit Intercept?

Haim Harari

Phys. Rev. Lett. 29, 1708 (1972) - Published 18 December, 1972

O(4) Treatment of the Electromagnetic-Weak Synthesis

A. Pais

Phys. Rev. Lett. 29, 1712 (1972) - Published 18 December, 1972

Physical Review Letters

Volume 29, Issue 25

LETTERS

Atoms, Molecules, and Related Topics

Electron Transmission Spectroscopy in Atomic Hydrogen

Zero-Field Level-Crossing Resonances in Optically Pumped $2^{3} S_{1}$ ${He}^{4}$

Near-Threshold Polarization of the $6^{1} S_{0} - 6^{3} P_{1}$ Line of Mercury Excited by Electron Impact

Atoms, Nuclei, and Particles in Matter

Long-Lived Reductions in Recoilless Fractions Following Coulomb Excitation

Electron Spin Polarization in Field Emission from EuS-Coated Tungsten Tips

Establishment of a Molecular-Vibration Decay Route in a Liquid

Plasmas, Fluids, Thermodynamics, and Related Topics

Interpretation of an Enhanced Diffusion Observed in a Solid-State Plasma

Dynamical Behavior of ${He}^{3}$ - ${He}^{4}$ Mixtures near the Tricritical Point

Onset of Striations in Barium Clouds

Spectral-Line Structures of Saturated Parametric Instabilities

Logarithmic Terms in the Diffusion Coefficient for the Lorentz Gas

Solids

Pressure-Induced Electronic Collapse and Semiconductor-to-Metal Transition in EuO

Experimental Evidence of the Anomalous Hall Effect in a Nonmagnetic Semiconductor

Translational Mobility of Hard Ferromagnetic Bubbles

Nuclei

Elastic Scattering of ${}^{16}O$ on ${}^{18}O$ Including Backward Angles

Elementary Particles and Fields

Measurement of the Charged-Particle Multiplicity in pp Collisions at 102 $\frac{GeV}{c}$