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  1. No Access

    Article

    Partial widths for the decays η:(1295) →γγ and η:(1440) →γγ

    We discuss γγ partial widths of pseudoscalar/isoscalar mesons η:(M) in the mass region M∼ 1000–1500 MeV. The transition amplitudes η:(1295) →γγ and η:(1440) →γγ are studied within an assumption that the decaying...

    A.V. Anisovich, V.V. Anisovich, V.A. Nikonov… in The European Physical Journal A - Hadrons … (1999)

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    Article

    First observations of Pontecorvo reactions with a recoiling neutron

    We report the first observations of Pontecorvo reactions of the type ¯pd →Xn. We fully reconstruct the outgoing meson and, for antiprotons stopped in liquid deuterium, we measure: BR(¯pd→π0)=(7.03±0.72)×10−6, BR(...

    C. Amsler, D. S. Armstrong, I. Augustin… in Zeitschrift für Physik A Hadrons and Nuclei (1995)