The European Physical Journal A (EPJ A)

Eur. Phys. J. A 8, 299-302

Abnormally large neutron polarizability or long-range strong-interaction potential at fast neutron scattering by heavy nuclei?

Yu.N. Pokotilovski

Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia

Received: 27 January 2000 / Revised version: 10 June 2000
Communicated by B. Povh

Abstract
It is shown that the discrepancy between the results obtained for different neutron energy ranges, when neutron polarizability is derived from the neutron scattering data, can be removed if one assumes that at the fast neutron scattering a strong-interaction long-range potential of Van der Waals ( $\sim r^$ ) or Casimir-Polder ( $\sim r^$ ) is observed. This strong-interaction long-range potential has possibly some experimental confirmation in the elastic p-p scattering.

PACS
13.40.Gp Electromagnetic form factors - 13.75.Cs Nucleon-nucleon interactions - 25.40.Dn Elastic neutron scattering - 28.20.Cz Neutron scattering

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