In the reaction π- + A → π+ π- π- + A at 15.1 GeV/c the coherently produced 3π mass spectrum has a broad peak around 1.1 GeV which consists mainly of a JP = 1+ state and of a smaller fraction of 0-. Comparing the observed dependence of the production of these diffractive states on the atomic weight A of the target nuclei with the optical model, we have studied the absorption of the produced states in nuclear matter. We have found the following values of the absorption cross-sections: σ2(0-) = 49-7+9 mb and σ2(1+) = 15.8-1.3+1.5 mb.
|Titolo:||Evidence that absorption in the π+ π− π− system in nuclear matter is stronger in the JP = 0− than in the JP = 1+ state|
|Settore Scientifico Disciplinare:||Settore FIS/04 - Fisica Nucleare e Subnucleare|
|Data di pubblicazione:||1975|
|Digital Object Identifier (DOI):||10.1016/0370-2693(75)90196-3|
|Appare nelle tipologie:||01 - Articolo su periodico|