Data di Pubblicazione:
2011
Abstract:
The helicity dependence of the total cross-section for the γn → pπ -π 0 reaction has been measured for the first time at incident photon energies from 450 to 800MeV. The measurement was performed with the large-acceptance detector DAPHNE at the tagged photon beam facility of the MAMI accelerator in Mainz. Both the measured unpolarized and the helicity-dependent observables are not well described by the existing theoretical models.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
polarized photon
helicity
total cross section
Elenco autori:
Ahrens, J.; Altieri, Saverio; Annand, J. R. M.; Arends, H. J.; Beck, R.; Blackston, M. A.; Bradtke, C.; Braghieri, A.; D'Hose, N.; Dutz, H.; Fix, A.; Heid, E.; Jahn, O.; Klein, F.; Kondratiev, R.; Lang, M.; Lisin, V.; Martinez, Fabregate; M., Mcgeorge; J. C., Meyer; W., Panzeri; A., Pedroni; Pinelli, Tazio; T., Protopopescu; D., Reicherz; G., Rohlof; C., Rosner; G., Rostomyan; T., Ryckbosch; D., Tamas; G., Thomas; A., Weller; H., R.
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