Volume 64, Issue 9

26 February 1990

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LETTERS

Elementary Particles and Fields

Forward-backward charge asymmetry in $e^{+}$ $e^{-}$ →hadron jets

D. Stuart et al.

Phys. Rev. Lett. 64, 983 (1990) - Published 26 February, 1990

Determination of $α_{s}$ from a differential-jet-multiplicity distribution in $e^{+}$ $e^{-}$ collisions at √s =29 and 91 GeV

S. Komamiya et al.

Phys. Rev. Lett. 64, 987 (1990) - Published 26 February, 1990

Mass-identified particle yields in antiproton-proton collisions at √s=1.8 TeV

T. Alexopoulos et al.

Phys. Rev. Lett. 64, 991 (1990) - Published 26 February, 1990

Single-spin asymmetry in inclusive reactions $p_{↑}$ +p→ $π^{+}$ +X, $π^{-}$ +X, and p+X at 13.3 and 18.5 GeV/c

S. Saroff, B. R. Baller, G. C. Blazey, H. Courant, K. J. Heller, M. L. Marshak, M. A. Shupe, D. S. Barton, G. Bunce, A. S. Carroll, S. Gushue, Y. I. Makdisi, L. Remsberg, S. Heppelmann, and J. J. Russell

Phys. Rev. Lett. 64, 995 (1990) - Published 26 February, 1990

Z decay and the search for dark matter

Lawrence M. Krauss

Phys. Rev. Lett. 64, 999 (1990) - Published 26 February, 1990

Glueball contribution to $K_{L}$ →2γ and its possible detection in $D_{s}$ decay

X.-G. He, S. Pakvasa, E. A. Paschos, and Y. L. Wu

Phys. Rev. Lett. 64, 1003 (1990) - Published 26 February, 1990

Soft-pion theorems and a light-cone quark model

Z-J. Cao and L. S. Kisslinger

Phys. Rev. Lett. 64, 1007 (1990) - Published 26 February, 1990

Nuclear Physics

Nuclear-bound quarkonium

Stanley J. Brodsky, Ivan Schmidt, and Guy F. de Téramond

Phys. Rev. Lett. 64, 1011 (1990) - Published 26 February, 1990

Atomic, Molecular, and Optical Physics

Squeezed-light generation with an incoherent pump

Prem Kumar, Orhan Aytür, and Jianming Huang

Phys. Rev. Lett. 64, 1015 (1990) - Published 26 February, 1990

Ionization of atomic hydrogen by positron impact

Gottfried Spicher, Björn Olsson, Wilhelm Raith, Günther Sinapius, and Wolfgang Sperber

Phys. Rev. Lett. 64, 1019 (1990) - Published 26 February, 1990

Plasma and Beam Physics

Observation of the limiter H mode in the JT-60 tokamak with lower-hybrid current drive

S. Tsuji et al. (JT-60 Team)

Phys. Rev. Lett. 64, 1023 (1990) - Published 26 February, 1990

Condensed Matter: Structure, Etc.

Superfluid ${}^{3}{He}$ in strong magnetic fields: Anomalous sound attenuation in the B phase and evidence for splitting of the AB transition

J. M. Kyynäräinen, J. P. Pekola, A. J. Manninen, and K. Torizuka

Phys. Rev. Lett. 64, 1027 (1990) - Published 26 February, 1990

Localizing periodicity in near-field images

P. Fraundorf

Phys. Rev. Lett. 64, 1031 (1990) - Published 26 February, 1990

Direct measurement of crystal surface stress

Robert E. Martinez, Walter M. Augustyniak, and Jene A. Golovchenko

Phys. Rev. Lett. 64, 1035 (1990) - Published 26 February, 1990

Mechanical stresses in (sub)monolayer epitaxial films

A. J. Schell-Sorokin and R. M. Tromp

Phys. Rev. Lett. 64, 1039 (1990) - Published 26 February, 1990

Condensed Matter: Electronic Properties, Etc.

Stretched-exponential relaxation of electric birefringence in polymer solutions

Vittorio Degiorgio, Tommaso Bellini, Roberto Piazza, Francesco Mantegazza, and Raymond E. Goldstein

Phys. Rev. Lett. 64, 1043 (1990) - Published 26 February, 1990

Excitation-energy dependence in the $L_{2}$ ,3 fluorescence spectrum of Si

J-E. Rubensson, D. Mueller, R. Shuker, D. L. Ederer, C. H. Zhang, J. Jia, and T. A. Callcott

Phys. Rev. Lett. 64, 1047 (1990) - Published 26 February, 1990

Atomically resolved carrier recombination at Si(111)-7×7 surfaces

R. J. Hamers and K. Markert

Phys. Rev. Lett. 64, 1051 (1990) - Published 26 February, 1990

Photoluminescence in short-period Si/Ge strained-layer superlattices

R. Zachai, K. Eberl, G. Abstreiter, E. Kasper, and H. Kibbel

Phys. Rev. Lett. 64, 1055 (1990) - Published 26 February, 1990

Curie temperature of ultrathin films of fcc-cobalt epitaxially grown on atomically flat Cu(100) surfaces

C. M. Schneider, P. Bressler, P. Schuster, J. Kirschner, J. J. de Miguel, and R. Miranda

Phys. Rev. Lett. 64, 1059 (1990) - Published 26 February, 1990

Dissipation in highly anisotropic superconductors

P. H. Kes, J. Aarts, V. M. Vinokur, and C. J. van der Beek

Phys. Rev. Lett. 64, 1063 (1990) - Published 26 February, 1990

Energy gaps of ${Nd}_{1.85}$ ${Ce}_{0.15}$ ${CuO}_{4 - y}$ and ${Nd}_{1.85}$ ${Th}_{0.15}$ ${CuO}_{4 - y}$ determined by far-infrared spectroscopy

S. H. Wang, Q. Song, B. P. Clayman, J. L. Peng, L. Zhang, and R. N. Shelton

Phys. Rev. Lett. 64, 1067 (1990) - Published 26 February, 1990

COMMENTS

Comment on ‘‘Spin dynamics at oxygen sites in ${YBa}_{2}$ ${Cu}_{3}$ $O_{7}$ ’’

L. Coffey

Phys. Rev. Lett. 64, 1071 (1990) - Published 26 February, 1990

ERRATA

New Photorefractive Effect in Graded-Gap Superlattices

Stephen E. Ralph, Federico Capasso, and Roger J. Malik

Phys. Rev. Lett. 64, 1072 (1990) - Published 26 February, 1990

CP-Violating Correlations in Electron-Positron Annihilation into $τ$ Leptons

W. Bernreuther and O. Nachtmann