Journal article

Publication year: 2003

Pages: 171-179

Journal: The European Physical Journal C

Volume number: 29

Issue number: 2

ISSN: 1434-6044

eISSN: 1434-6052

DOI Link: https://doi.org/10.1140/epjc/s2003-01232-3

Publisher: SpringerOpen

Abstract: 
Double-spin asymmetries in the cross section of electroproduction of rho(0) and phi mesons on the proton and deuteron are measured at the HERMES experiment. The photoabsorption asymmetry in exclusive rho(0) electroproduction on the proton exhibits a positive tendency. This is consistent with theoretical predictions that the exchange of an object with unnatural parity contributes to exclusive rho(0) electroproduction by transverse photons. The photoabsorption asymmetry on the deuteron is found to be consistent with zero. Double-spin asymmetries in rho(0) and phi meson electroproduction by quasi-real photons were also found to be consistent with zero; the asymmetry in the case of the phi meson is compatible with a theoretical prediction which involves ss knockout from the nucleon.

Harvard Citation style: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V., Andrus, A., et al. (2003) Double-spin asymmetries in the cross section of ρ⁰ and φ production at intermediate energies, The European Physical Journal C, 29(2), pp. 171-179. https://doi.org/10.1140/epjc/s2003-01232-3

APA Citation style: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V., Andrus, A., Aschenauer, E., Augustyniak, W., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Baturin, V., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Blok, H., ...Di Nezza, P. (2003). Double-spin asymmetries in the cross section of ρ⁰ and φ production at intermediate energies. The European Physical Journal C. 29(2), 171-179. https://doi.org/10.1140/epjc/s2003-01232-3