Polarization Effects in ρ0-Meson Production in Antiproton-Proton Interactions at 22.4, 12, and 5.7 GeV/cстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация: The ρ0-meson spin alignment is studied in p¯p interactions at 22.4 and 12 GeV/c and in the reaction p¯p-->2π+2π-+neutrals at 5.7 GeV/c. An essential ρ0-meson spin alignment is observed. The values of the ρT00 element of the ρ0-meson spin-density matrix in the transversity frame are 0.56+/-0.07, 0.53+/-0.05, and 0.54+/-0.04 for the above-mentioned interactions, respectively. An increase of ρT00 with ρ0 transverse momentum is obtained.