First results on meson spectroscopy using antineutrons as projectiles are reported. Three-body (π+π+π−) and five-body (π+π+π+π−π−) final states following the annihilation of 100 to 290 MeV/c antineutrons on hydrogen were analyzed. The (π+π−) invariant mass spectrum in the three-body reaction is accounted for by the ϱ0 anf f2(1270) resonances, together with an enhancement around 1540 MeV, in the region of the AX (1565) and the f2(1515) resonances, whereas the best fit for the (π+π+π−π−) invariant mass in five-body events shows the already reported structure ζ(1480) and suggests the presence of a second structure around 1650 MeV.
|Titolo:||Meson spectroscopy with antineutrons|
|Data di pubblicazione:||1992|
|Digital Object Identifier (DOI):||10.1016/0370-2693(92)90998-J|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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