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    • The annihilation frequencies of 19 (p) over barp annihilation reactions at rest obtained in different target densities are analysed in order to determine the values of the P-wave annihilation percentage at each target density and the average hadronic branching ratios from P- and S-states. Both the assumptions of linear dependence of the annihilation frequencies on the P-wave annihilation percentage of the protonium state and the approach with the enhancement factors of Batty are considered. Furthermore the cases of incompatible measurements are discussed. (C) 2001 Elsevier Science B.V. All rights reserved.

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    Titolo: Contribution from S and P waves in p(p)over-bar annihilation at rest
    Autori: 
    DE FALCO, ALESSANDRO
    PUDDU, GIOVANNA
    USAI, GIANLUCA
    mostra contributor esterni 
    Data di pubblicazione: 2001
    Rivista: 
    NUCLEAR PHYSICS. A  
    Citazione: Contribution from S and P waves in p(p)over-bar annihilation at rest / Bendiscioli G; Filippini V; Fontana A; Montagna P; Rotondi A; Salvini P; Bertin A; Bruschi M; Capponi M; De Castro S; Dona' R; Galli D; Giaobbe B; Marconi U; Massa I; Piccinini M; Cesari NS; Spighi R; Vecchi S; Vagnoni V; Villa M; Vitale A; Zoccoli A; Bianconi A; Bonomi G; Rizzini EL; Venturelli L; Zenoni A; Cicalo C; De Falco A; Masoni A; Puddu G; Serci S; Usai G; Gorchakov OE; Prkahov SN; Rozhdestvensky AM; Tretyak VI; Poli M; Gianotti P; Guaraldo C; Lanaro A; Lucherini V; Petrascu C; Kudryavtsev AE; Balestra F; Bussa MP; Busso L; Cerello P; Denisov OY; Ferrero L; Grasso A; Maggiora A; Panzarasa A; Panzieri D; Tosello F; Botta E; Bressani T; Calvo D; Costa S; D'Isep D; Feliciello A; Filippi A; Marcello S; Mirfakhrai N; Agnello M; Iazzi F; Minetti B; Tessaro S. - 686(2001), pp. 317-340.
    Abstract: The annihilation frequencies of 19 (p) over barp annihilation reactions at rest obtained in different target densities are analysed in order to determine the values of the P-wave annihilation percentage at each target density and the average hadronic branching ratios from P- and S-states. Both the assumptions of linear dependence of the annihilation frequencies on the P-wave annihilation percentage of the protonium state and the approach with the enhancement factors of Batty are considered. Furthermore the cases of incompatible measurements are discussed. (C) 2001 Elsevier Science B.V. All rights reserved.
    Handle: http://hdl.handle.net/11584/43550
    Tipologia:1.1 Articolo in rivista

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    http://hdl.handle.net/11584/43550
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