The n̄-Fe absorption cross section sigma(nbarFe) has been measured at LEAR (the Low Energy Antiproton Ring at CERN) using tagged n̄'s produced in the p̄p → n̄n charge-exchange reaction. With incident p̄ momenta of 875 and 545 MeV/c sigma(nbarFe) has been measured in the momentum interval between 125 and 780 MeV/c, in a region where only a few measurements presently exist. The overall statistical and systematic errors range from 20 to 5%; the normalisation error is less than 3%. The measured cross sections are well reproduced by a parametrisation a+b/p, with a = 0.680 ± 0.051 barn and b = 0.228 ± 0.024 barn·GeV/c.
Measurement of the n̄-Fe absorption cross section between 125 and 780 MeV/c / C., Barbina; A., Ahmidouch; Birsa, Renato; Bradamante, Franco; Bressan, Andrea; S., Dalla Torre Colautti; Giorgi, Marcello; R., Hess; F., Iazzi; R. A., Kunne; M., Lamanna; C., Lechanoine Leluc; M. P., Macciotta; Martin, Anna; A., Musso; D., Rapin; Schiavon, Paolo; F., Tessarotto. - In: NUCLEAR PHYSICS. A. - ISSN 0375-9474. - STAMPA. - 612:(1997), pp. 346-358. [10.1016/S0375-9474(96)00331-4]
Measurement of the n̄-Fe absorption cross section between 125 and 780 MeV/c
BIRSA, RENATO;BRADAMANTE, FRANCO;BRESSAN, Andrea;GIORGI, MARCELLO;MARTIN, ANNA;SCHIAVON, PAOLO;
1997-01-01
Abstract
The n̄-Fe absorption cross section sigma(nbarFe) has been measured at LEAR (the Low Energy Antiproton Ring at CERN) using tagged n̄'s produced in the p̄p → n̄n charge-exchange reaction. With incident p̄ momenta of 875 and 545 MeV/c sigma(nbarFe) has been measured in the momentum interval between 125 and 780 MeV/c, in a region where only a few measurements presently exist. The overall statistical and systematic errors range from 20 to 5%; the normalisation error is less than 3%. The measured cross sections are well reproduced by a parametrisation a+b/p, with a = 0.680 ± 0.051 barn and b = 0.228 ± 0.024 barn·GeV/c.Pubblicazioni consigliate
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