Antineutron annihilation cross sections on C, Al, Cu, Ag, Sn and Pb targets were measured in the momentum range 50–400 MeV/c. The full set of data is very well described by a parameterization in which the target mass number and momentum dependence are factorized. The A dependence is, within 2%, consistent with a A2/3 scaling law, indicating a pure surface process. The momentum dependence is, within 20%, consistent with that expected from a properly averaged contribution of the elementary cross section for and annihilation, indicating that the process is due to the interaction with single nucleons on the surface.
Antineutron-nucleus annihilation cross sections below 400 MeV/c / M. Astrua; E. Botta; T. Bressani; D. Calvo; C. Casalegno; A. Feliciello; A. Filippi; S. Marcello; M. Agnello; F. Iazzi. - In: NUCLEAR PHYSICS. A. - ISSN 0375-9474. - 697:1-2(2002), pp. 209-224. [10.1016/S0375-9474(01)01252-]
Titolo: | Antineutron-nucleus annihilation cross sections below 400 MeV/c | |
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Data di pubblicazione: | 2002 | |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/S0375-9474(01)01252- | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/11583/1845786