scispace - formally typeset
Search or ask a question

Showing papers by "Université Paris-Saclay published in 1985"

Journal Article•DOI•
Measurement of epsilon '/ epsilon in the neutral Kaon system.

[...]

R. H. Bernstein1, R. H. Bernstein2, G. J. Bock1, G. J. Bock3, D. Carlsmith1, D. Carlsmith4, D. Coupl1, D. Coupl5, J. W. Cronin1, George D Gollin1, George D Gollin6, Wen Keling1, K. Nishikawa1, H. W. M. Norton1, B. Winstein1, B. Peyaud7, R. Turlay7, A. Zylberstejn7 •
University of Chicago1, Columbia University2, Fermilab3, University of Wisconsin-Madison4, Stanford University5, Princeton University6, Université Paris-Saclay7
15 Apr 1985-Physical Review Letters
TL;DR: A measurement of the ratio of the CP-nonconservation parameters, epsilon'/epsilon, in the K/sup 0/K /Sup 0/ system was performed through a study of two-pion decays with and without a regenerator, agreeing with previous less precise determinations but not able to test decisively the Kobayashi-Maskawa mechanism.
Abstract: A measurement of the ratio of the CP-nonconservation parameters, epsilon'/epsilon, in the K/sup 0/K /sup 0/ system was performed through a study of two-pion decays with and without a regenerator. To reduce systematic effects, K/sub L/ and K/sub S/ decays were recorded simultaneously with a double beam. Over 3100 K/sub L/..-->..2..pi../sup 0/ events were reconstructed leading to the result epsilon'/epsilon = -0.0046 +- 0.0053 +- 0.0024 (the first error is statistical, the second systematic). The measurement agrees with previous less precise determinations but, because of theoretical uncertainties, is not able to test decisively the Kobayashi-Maskawa mechanism.

70 citations

Journal Article•DOI•
Black body description of antiproton-nucleus scattering

[...]

J. Lichtenstadt1, Avivi I. Yavin1, S. Janouin2, P. Birien2, G. Bruge2, A. Chaumeaux2, D. Drake2, D. Garreta2, D. Legrand2, M. C. Lemaire2, B. Mayer2, Jen-Chieh Peng2, M. Berrada, J. P. Bocquet, E. Monnand, J. Mougey, P. Perrin, Elie Aslanides, O. Bing •
Tel Aviv University1, Université Paris-Saclay2
01 Sep 1985-Physical Review C
TL;DR: Angular distributions for elastic scattering of antiprotons from nuclei are analyzed in terms of a fuzzy black disk model and the obtained fits are qualitatively good concerning the slope and position of the extrema, but are too deep in the minima.
Abstract: Angular distributions for elastic scattering of antiprotons from nuclei are analyzed in terms of a fuzzy black disk model. Data from /sup 12/C, /sup 16/O, /sup 18/O, and /sup 40/Ca at incident antiproton energies of 47 and 180 MeV are analyzed. The obtained fits are qualitatively good concerning the slope and position of the extrema, but are too deep in the minima.

7 citations