Measurements of the virtual bremsstrahlung in the p+p and p+d systems

JG Messchendorp*, JCS Bacelar, MJ van Goethem, MN Harakeh, M Hoefman, H Huisman, N Kalantar-Nayestanaki, A Kugler, H Lohner, RW Ostendorf, S Schadmand, R Simon, M Volkerts, [No Value] Wagner, HW Wilschut

*Corresponding author voor dit werk

    OnderzoeksoutputAcademicpeer review

    Samenvatting

    Virtual bremsstrahlung yields measured in (p) over bar+p-->p+p+e(+)+e(-) and (p) over bar+d-->He-3+e(+)+e(-) are presented. The experiments were performed with a 190 MeV polarized proton beam obtained from the cyclotron AGOR at KVI in Groningen. Differential cross sections, response functions and analyzing powers were obtained for both reactions in exclusive measurements in which all outgoing particles were measured in a coincidence setup between SALAD and TAPS. The data are compared with gauge-invariant calculations using a NN T-matrix fitted to elastic phase-shifts. For pp-->ppe(+) e(-) a reasonable agreement is found for all measured virtual-photon invariant masses, M-gamma > 15 MeV/c(2) up to 80 MeV/c(2). For the pd-->He-3 e(+)e(-) angular distributions, the calculations underestimate the data for theta(CM) >100 degrees similar to what is found in the real-photon capture reaction.

    Originele taal-2English
    TitelFEW-BODY PROBLEMS IN PHYSICS '98
    RedacteurenB Desplanques, K Protasov, B SilvestreBrac, J Carbonell
    Plaats van productieVIENNA
    UitgeverijSpringer
    Pagina's355-358
    Aantal pagina's4
    ISBN van geprinte versie3-211-83280-7
    StatusPublished - 1999
    Evenement16th European Conference on Few-Body Problems in Physics - , France
    Duur: 1-jun.-19986-jun.-1998

    Publicatie series

    NaamFEW-BODY SYSTEMS SUPPLEMENTUM
    UitgeverijSPRINGER-VERLAG WIEN
    Volume10
    ISSN van geprinte versie0177-8811

    Other

    Other16th European Conference on Few-Body Problems in Physics
    Land/RegioFrance
    Periode01/06/199806/06/1998

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