<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>π</mi><mi mathvariant="italic">NN</mi></math></span> Coupling from High Precision <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="italic">np</mi></math></span> Charge Exchange at 162 MeV

T. E. O. Ericson; B. Loiseau; J. Nilsson; N. Olsson; J. Blomgren; H. Condé; K. Elmgren; O. Jonsson; L. Nilsson; P.-U. Renberg; A. Ringbom; T. Rönnqvist; G. Tibell; R. Zorro

doi:10.1103/PhysRevLett.75.1046

$π NN$ Coupling from High Precision $np$ Charge Exchange at 162 MeV

T. E. O. Ericson, B. Loiseau, J. Nilsson, N. Olsson, J. Blomgren, H. Condé, K. Elmgren, O. Jonsson, L. Nilsson, P.-U. Renberg, A. Ringbom, T. Rönnqvist, G. Tibell, and R. Zorro

Phys. Rev. Lett. 75, 1046 – Published 7 August 1995

Abstract

Differential $np$ cross sections for unpolarized neutrons of 162 MeV have been measured to high precision with particular attention to the absolute normalization. These data can be extrapolated precisely and model independently to the pion pole and give a $π NN$ coupling constant $g^{2} = 14.62 \pm 0.06 \pm 0.29$ or $f^{2} = 0.0808 \pm 0.0003 \pm 0.0017$ . This is higher than recently suggested values.

Received 21 February 1995

DOI:https://doi.org/10.1103/PhysRevLett.75.1046

Authors & Affiliations

T. E. O. Ericson^1,2, B. Loiseau^3,4, J. Nilsson⁵, N. Olsson⁵, J. Blomgren⁵, H. Condé⁵, K. Elmgren⁵, O. Jonsson⁶, L. Nilsson⁶, P.-U. Renberg⁶, A. Ringbom⁷, T. Rönnqvist⁷, G. Tibell⁷, and R. Zorro⁷

¹European Organization for Nuclear Research, CH-1211 Geneva 23, Switzerland,
²and Department of Theoretical Physics, Box 803, S-75108 Uppsala, Sweden
³Division de Physique Théorique, Institut de Physique Nucléaire, 91406 Orsay Cedex,
⁴and LPTPE Université P. & M. Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France
⁵Department of Neutron Research, Uppsala University, Box 535, S-75121 Uppsala, Sweden
⁶The Svedberg Laboratory, Uppsala University, Box 533, S-75121 Uppsala, Sweden
⁷Department of Radiation Sciences, Uppsala University, Box 535, S-75121 Uppsala, Sweden

Comments & Replies

Ericson et al. Reply:

T. E. O. Ericson, B. Loiseau, J. Rahm, N. Olsson, J. Blomgren, H. Condé, K. Elmgren, O. Jonsson, L. Nilsson, P.-U. Renberg, A. Ringbom, T. Rönnqvist, G. Tibell, and R. Zorro

Phys. Rev. Lett. 81, 5254 (1998)

Comment on “ $π NN$ Coupling from High Precision $np$ Charge Exchange at 162 MeV”

M. C. M. Rentmeester, R. A. M. Klomp, and J. J. de Swart

Phys. Rev. Lett. 81, 5253 (1998)

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Physical Review Letters

πNN Coupling from High Precision np Charge Exchange at 162 MeV

T. E. O. Ericson, B. Loiseau, J. Nilsson, N. Olsson, J. Blomgren, H. Condé, K. Elmgren, O. Jonsson, L. Nilsson, P.-U. Renberg, A. Ringbom, T. Rönnqvist, G. Tibell, and R. Zorro

Phys. Rev. Lett. 75, 1046 – Published 7 August 1995

Abstract

Authors & Affiliations

Comments & Replies

Ericson et al. Reply:

T. E. O. Ericson, B. Loiseau, J. Rahm, N. Olsson, J. Blomgren, H. Condé, K. Elmgren, O. Jonsson, L. Nilsson, P.-U. Renberg, A. Ringbom, T. Rönnqvist, G. Tibell, and R. Zorro

Phys. Rev. Lett. 81, 5254 (1998)

Comment on “ πNN Coupling from High Precision np Charge Exchange at 162 MeV”

M. C. M. Rentmeester, R. A. M. Klomp, and J. J. de Swart

Phys. Rev. Lett. 81, 5253 (1998)

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$π NN$ Coupling from High Precision $np$ Charge Exchange at 162 MeV

Comment on “ $π NN$ Coupling from High Precision $np$ Charge Exchange at 162 MeV”