Archivio Istituzionale della RicercaAntineutron 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; Agnello, Michelangelo; Iazzi, Felice. - In: NUCLEAR PHYSICS. A. - ISSN 0375-9474. - 697:1-2(2002), pp. 209-224. [10.1016/S0375-9474(01)01252-]
Antineutron-nucleus annihilation cross sections below 400 MeV/c
AGNELLO, MICHELANGELO;IAZZI, Felice
2002
Abstract
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.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/11583/1845786
Attenzione
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo