Measurement of np→d<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi>π</mi></mrow><mrow><mn>0</mn></mrow></msup></mrow></math></span> cross sections very near threshold

D. A. Hutcheon; E. Korkmaz; G. A. Moss; R. Abegg; N. E. Davison; G. W. R. Edwards; L. G. Greeniaus; D. Mack; C. A. Miller; W. C. Olsen; I. J. van Heerden; Ye Yanlin

doi:10.1103/PhysRevLett.64.176

Measurement of np→d $π^{0}$ cross sections very near threshold

D. A. Hutcheon, E. Korkmaz, G. A. Moss, R. Abegg, N. E. Davison, G. W. R. Edwards, L. G. Greeniaus, D. Mack, C. A. Miller, W. C. Olsen, I. J. van Heerden, and Ye Yanlin

Phys. Rev. Lett. 64, 176 – Published 8 January 1990

Abstract

We have measured np→d $π^{0}$ cross sections at eleven beam energies within 16 MeV of threshold. Total cross sections are only 0.67±0.10 of the value which has been generally accepted for s-wave pion production strength near threshold. The differential cross sections are anisotropic at only 1 MeV (c.m.) above threshold. Our results are compared to $π^{+}$ d→pp data and to predictions of two models.

Received 5 July 1989

DOI:https://doi.org/10.1103/PhysRevLett.64.176

Authors & Affiliations

D. A. Hutcheon, E. Korkmaz, G. A. Moss, R. Abegg, N. E. Davison, G. W. R. Edwards, L. G. Greeniaus, D. Mack, C. A. Miller, W. C. Olsen, I. J. van Heerden, and Ye Yanlin

TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3
Nuclear Research Center, Univesity of Alberta, Edmonton, Alberta, Canada T6G 2N5
Department of Physics, University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2
Department of Physics, University of Western Cape, Bellville 7573, South Africa