Volume 171, Issue 5

D. R. Botterill, R. M. Brown, I. F. Corbett, G. Culligan, J. McL. Emmerson, R. C. Field, J. Garvey, P. B. Jones, N. Middlemas, D. Newton, T. W. Quirk, G. L. Salmon, P. Steinberg, and W. S. C. Williams

Phys. Rev. 171, 1402 (1968) - Published 25 July, 1968

Scattering of High-Energy Positive and Negative Muons on Electrons

Thomas B. W. Kirk and Seth H. Neddermeyer

Phys. Rev. 171, 1412 (1968) - Published 25 July, 1968

Measurement of the Lifetime of the Short-Lived Neutral $K$ Meson

D. G. Hill, D. K. Robinson, M. Sakitt, O. Skjeggestad, J. Canter, Y. Cho, A. Dralle, A. Engler, H. E. Fisk, R. W. Kraemer, and C. M. Meltzer

Phys. Rev. 171, 1418 (1968) - Published 25 July, 1968

Observation of $Y^{* +} (1385) K^{+}$ and $N^{* + +} (1236) ρ^{0}$ Decays of a Nucleon Resonance

W. Chinowsky, P. Condon, R. R. Kinsey, S. Klein, M. Mandelkern, P. Schmidt, J. Schultz, F. Martin, M. L. Perl, and T. H. Tan

Phys. Rev. 171, 1421 (1968) - Published 25 July, 1968

$A_{1} - ρ - π$ System and $π \to l ν γ$ Decay

Riazuddin and Fayyazuddin

Phys. Rev. 171, 1428 (1968) - Published 25 July, 1968

Formal Breakdown of Lorentz Invariance in Two-Dimensional Field Theories

G. S. Guralnik and C. R. Hagen

Phys. Rev. 171, 1431 (1968) - Published 25 July, 1968

Velocity-Dependent Potential Parametrization for ${}^{1}S_{0}$ Elastic Proton-Proton Scattering

John E. Brolley

Phys. Rev. 171, 1439 (1968) - Published 25 July, 1968

Construction of Local Quantum Fields Describing Many Masses and Spins

Henry D. I. Abarbanel and Y. Frishman

Phys. Rev. 171, 1442 (1968) - Published 25 July, 1968

${K_{2}}^{0} + p \to {K_{1}}^{0} + p$ and the Regge Trajectory of the $ω$ Meson

Frederick J. Gilman

Phys. Rev. 171, 1453 (1968) - Published 25 July, 1968

Theoretical Study of $K_{l 4}$ Decay

F. A. Berends, A. Donnachie, and G. C. Oades

Phys. Rev. 171, 1457 (1968) - Published 25 July, 1968

Daughter Regge Trajectory in a Field-Theory Model. II

Arthur R. Swift

Phys. Rev. 171, 1466 (1968) - Published 25 July, 1968

Properties of Mandelstam Cuts

D. I. Olive and J. C. Polkinghorne

Phys. Rev. 171, 1475 (1968) - Published 25 July, 1968

Parity-Conserving Hyperon Nonleptonic Decays in $SU (3)$

M. O. Taha

Phys. Rev. 171, 1481 (1968) - Published 25 July, 1968

Backward ( $θ = 180 °$ ) $π N$ Dispersion Relations: Applications to the Interference Model, $P$ and $P^{'}$ Trajectories, and to the Mechanical Form Factors of the Nucleon

Hyman Goldberg

Phys. Rev. 171, 1485 (1968) - Published 25 July, 1968

Kinematical Singularities and Zeros for the Reaction $γ N \to VN$

E. Gotsman and U. Maor

Phys. Rev. 171, 1495 (1968) - Published 25 July, 1968

Second-Order Weak Processes and Weak-Interaction Cutoff

R. N. Mohapatra, J. Subba Rao, and R. E. Marshak

Phys. Rev. 171, 1502 (1968) - Published 25 July, 1968

Threshold and Pseudothreshold Relations for Meson-Baryon Scattering

Frank S. Henyey

Phys. Rev. 171, 1509 (1968) - Published 25 July, 1968

Singularities of a Bethe-Salpeter Amplitude

H. S. Green and S. N. Biswas

Phys. Rev. 171, 1511 (1968) - Published 25 July, 1968

Complex Angular Momentum and Infinite Helicity Sums. II

G. A. Winbow

Phys. Rev. 171, 1517 (1968) - Published 25 July, 1968

Calculation of Some Three-Body Scattering Amplitudes

L. Schlessinger

Phys. Rev. 171, 1523 (1968) - Published 25 July, 1968

Embedding of $SU (3)$ in $SU (8)$

D. S. Carlstone

Phys. Rev. 171, 1527 (1968) - Published 25 July, 1968

Interference of Kaon Resonances

G. L. Kane and H. S. Mani

Phys. Rev. 171, 1533 (1968) - Published 25 July, 1968

Centrifugal-Barrier Effects in $\frac{N}{D}$ Calculations

R. W. Childers and A. W. Martin

Phys. Rev. 171, 1540 (1968) - Published 25 July, 1968

Nonleptonic Decays of Hyperons and Current Algebra

Francis C. P. Chan

Phys. Rev. 171, 1543 (1968) - Published 25 July, 1968

Vector and Axial-Vector Meson Dominance in the $K_{3 π}$ Decays

R. H. Graham and S. K. Yun

Phys. Rev. 171, 1550 (1968) - Published 25 July, 1968

Multiple Soft-Pion Production

A. N. Kamal

Phys. Rev. 171, 1556 (1968) - Published 25 July, 1968

Consequences of the Modified Hypothesis of Partially Conserved Axial-Vector Current in Photopion Production

M. L. Tapper

Phys. Rev. 171, 1561 (1968) - Published 25 July, 1968

High-Energy Hadron-Nucleus Collisions. I. Protons

Alfred S. Goldhaber and Charles J. Joachain

Phys. Rev. 171, 1566 (1968) - Published 25 July, 1968

Variational Principles for Crossing-Symmetric Off-Shell Equations

Richard W. Haymaker and R. Blankenbecler

Phys. Rev. 171, 1581 (1968) - Published 25 July, 1968

Coupling of the Spacelike and Timelike Wave Functions at Infinite Momentum

Shau-Jin Chang and L. O'Raifeartaigh

Phys. Rev. 171, 1587 (1968) - Published 25 July, 1968

Induction of Symmetries for a Set of Mesons of Both Parities

Richard H. Capps

Phys. Rev. 171, 1591 (1968) - Published 25 July, 1968

Field-Theoretic Formulation of the Bootstrap Hypothesis

P. Kaus and F. Zachariasen

Phys. Rev. 171, 1597 (1968) - Published 25 July, 1968

Form Factors and Electromagnetic Masses

Tung-mow Yan

Phys. Rev. 171, 1613 (1968) - Published 25 July, 1968

Regge Poles for Spinless Particles in the Backward Direction

Emmanuel A. Paschos

Phys. Rev. 171, 1620 (1968) - Published 25 July, 1968

Extension of the Contour-Distortion Method in Relativistic Three-Particle Scattering

G. D. McCartor and J. Nuttall

Phys. Rev. 171, 1627 (1968) - Published 25 July, 1968

Two Simple Approximation Schemes for Lippmann-Schwinger-Type Equations

L. A. P. Balázs and Sharashchandra H. Patil

Phys. Rev. 171, 1633 (1968) - Published 25 July, 1968

Incoherent-Scattering Function, Total Pair-Production Cross Section, and Pair-Production Length for Helium

T. M. Knasel

Phys. Rev. 171, 1643 (1968) - Published 25 July, 1968

$ρ^{+}$ Photoproduction and $π^{+}$ Production via $ρ^{+}$ Regge-Trajectory Exchange

Charles Picciotto

Phys. Rev. 171, 1648 (1968) - Published 25 July, 1968

Wave Equations with Broken $U (3, 1)$ Symmetry

Ernest E. H. Shin

Phys. Rev. 171, 1652 (1968) - Published 25 July, 1968

Pion-Nucleon Spin-Flip Current-Algebra Sum Rule

Eugen E. Radescu

Phys. Rev. 171, 1655 (1968) - Published 25 July, 1968

Renormalization of Weak Form Factors, and the Cabibbo Angle

H. R. Quinn and J. D. Bjorken

Phys. Rev. 171, 1660 (1968) - Published 25 July, 1968

Inelastic Contribution to the $p - n$ Mass Difference in Cottingham's Formula

Taizo Muta

Phys. Rev. 171, 1661 (1968) - Published 25 July, 1968

Conspiracy Relations for Unequal-Mass Processes

John D. Stack

Phys. Rev. 171, 1666 (1968) - Published 25 July, 1968

$Δ I = \frac{1}{2}$ Rule in Current-Current Models of $CP$ Violation

Barry R. Holstein

Phys. Rev. 171, 1668 (1968) - Published 25 July, 1968

Radiative Corrections to ${K_{e 3}}^{0}$ Decays and the $Δ I = \frac{1}{2}$ Rule

Edward S. Ginsberg

Phys. Rev. 171, 1675 (1968) - Published 25 July, 1968

Superconvergence and Regge Poles. I. Odd-Signature Exchanges

M. G. Olsson

Phys. Rev. 171, 1681 (1968) - Published 25 July, 1968

Pion-Nucleon Scattering and $SO (4)$ Symmetry

N. W. Macfadyen

Phys. Rev. 171, 1691 (1968) - Published 25 July, 1968

A Mass-Splitting Theorem for General Definitions of Mass

A. Böhm and L. O'Raifeartaigh

Phys. Rev. 171, 1698 (1968) - Published 25 July, 1968

Quantized Gauge Field Theory of Chiral Symmetry

York-Peng Yao

Phys. Rev. 171, 1702 (1968) - Published 25 July, 1968

Emission of Low-Energy Photons in Scattering and Decay Processes and a Possible Method for Determining Electromagnetic Properties of Short-Lived States

Saul Barshay and Tsu Yao

Phys. Rev. 171, 1708 (1968) - Published 25 July, 1968

Lewis-Oppenheimer-Wouthuysen Model Applied to Neutrino Reactions

Barbara Sakitt

Phys. Rev. 171, 1715 (1968) - Published 25 July, 1968

Process $π^{-} p \to π^{+} π^{-} n$ near Threshold

S. Humble and T. D. Spearman

Phys. Rev. 171, 1724 (1968) - Published 25 July, 1968

Intermediate Bosons and the Electromagnetic Field

T. D. Lee

Phys. Rev. 171, 1731 (1968) - Published 25 July, 1968

Sum Rules from Charge-Charge-Density and Charge-Charge Commutators

S. Matsuda and S. Oneda

Phys. Rev. 171, 1743 (1968) - Published 25 July, 1968

Subsidiary Condition in Quantum Electrodynamics

Kurt Haller and Leon F. Landovitz

Phys. Rev. 171, 1749 (1968) - Published 25 July, 1968

Pion Conspiracy and Pion Residue from the Finite-Energy Photoproduction Sum Rule

D. P. Roy and Shu-Yuan Chu

Phys. Rev. 171, 1762 (1968) - Published 25 July, 1968

Two-Body $K^{-} d$ Reactions as a Test of One-Meson Exchange

M. E. Schillaci and R. R. Silbar

Phys. Rev. 171, 1764 (1968) - Published 25 July, 1968

Approximate Bounds on Coupling Constants from Analyticity, Crossing, and Unitarity

D. Atkinson and F. Calogero

Phys. Rev. 171, 1767 (1968) - Published 25 July, 1968

Nonlocal Currents as Coordinates for Particles

J. Šoln

Phys. Rev. 171, 1773 (1968) - Published 25 July, 1968

Optical-Model Analysis of Pion-Nucleus Scattering. II. Pion Form Factor

E. H. Auerbach, D. M. Fleming, and M. M. Sternheim

Phys. Rev. 171, 1781 (1968) - Published 25 July, 1968

A Sum Rule Based on Unitarity

Farzam Arbab and Richard C. Slansky

Phys. Rev. 171, 1785 (1968) - Published 25 July, 1968

Enhancement of $SU (3)$ Breakings and Regge Trajectories

Mahiko Suzuki

Phys. Rev. 171, 1791 (1968) - Published 25 July, 1968

Pion Production, Current Algebra, and Coupling-Constant Relations

A. N. Mitra and R. Nath

Phys. Rev. 171, 1798 (1968) - Published 25 July, 1968

Determination of the Electromagnetic Couplings of the $ρ$ and $A_{1}$ Mesons

P. De Baenst and J. Pestieau

Phys. Rev. 171, 1805 (1968) - Published 25 July, 1968

Natural Zeros of Regge Residues

H. F. Jones and M. D. Scadron

Phys. Rev. 171, 1809 (1968) - Published 25 July, 1968

Relativistic Lagrangian Field Theory for Composite Systems

Christian Fronsdal

Phys. Rev. 171, 1811 (1968) - Published 25 July, 1968

Asymptotic Vertex Function in a Crossing-Symmetric Bootstrap Model of the Hadrons

John Harte

Phys. Rev. 171, 1825 (1968) - Published 25 July, 1968

Possible Enhancement of Two-Photon-Exchange Effects in Large-Momentum-Transfer Electron-Proton Scattering

John Harte

Phys. Rev. 171, 1832 (1968) - Published 25 July, 1968

ERRATA

Construction of Solutions to Superconvergence Relations

D. Atkinson and M. B. Halpern

Phys. Rev. 171, 1834 (1968) - Published 25 July, 1968

Quantum Theory of Gravity. I. The Canonicál Theory

Bryce S. DeWitt

Phys. Rev. 171, 1834 (1968) - Published 25 July, 1968

Quantum Theory of Gravity. II. The Manifestly Covariant Theory

Bryce S. DeWitt

Phys. Rev. 171, 1834 (1968) - Published 25 July, 1968

Quantum Theory of Gravity. III. Applications of the Covariant Theory

Bryce S. DeWitt

Phys. Rev. 171, 1834 (1968) - Published 25 July, 1968