Compton backscattering gamma ray beams are characterized by a high degree of linear and circular polarization with low unpolarized backgrounds and have proven to provide very precise measurements of polarization observables. Latest results from LEGS and GRAAL experiments on proton and deuteron targets are presented. The Sigma beam asymmetry for omega photoproduction has been measured by the GRAAL collaboration for both the omega -> pi(0)gamma and the omega -> pi(+)pi(+)pi(0) decay channels on the proton target; single and double polarization asymmetries have been provided also for the K photoproduction channel. E and G double polarization asymmetries for single pion photoproduction on the proton and deuteron have been measured at LEGS using a frozen spin HD target.

D'Angelo, A., Ardashev, K., Bade, C., Bartalini, O., Bellini, V., Blecher, M., et al. (2012). Results from polarized experiments at LEGS and GRAAL. In 8TH INTERNATIONAL WORKSHOP ON THE PHYSICS OF EXCITED NUCLEONS (NSTAR 2011) (pp.56-61). Melville, New York -- USA : American Institute of Physics [10.1063/1.3701189].

Results from polarized experiments at LEGS and GRAAL

D'ANGELO, ANNALISA;BARTALINI, ORIETTA;FANTINI, ALESSIA;FRANCO, DOMENICO;LAPIK, ALEXANDER;SCHAERF, CARLO;
2012-01-01

Abstract

Compton backscattering gamma ray beams are characterized by a high degree of linear and circular polarization with low unpolarized backgrounds and have proven to provide very precise measurements of polarization observables. Latest results from LEGS and GRAAL experiments on proton and deuteron targets are presented. The Sigma beam asymmetry for omega photoproduction has been measured by the GRAAL collaboration for both the omega -> pi(0)gamma and the omega -> pi(+)pi(+)pi(0) decay channels on the proton target; single and double polarization asymmetries have been provided also for the K photoproduction channel. E and G double polarization asymmetries for single pion photoproduction on the proton and deuteron have been measured at LEGS using a frozen spin HD target.
8TH International Workshop on the Physics of Excited Nucleons (NSTAR 2011)
Newport News, VA USA
2011
8th
Rilevanza internazionale
su invito
2012
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Photoreactions; polarized photon beams; polarized targets; SIGMA-BEAM ASYMMETRY; NUCLEONIC RESONANCE EXCITATIONS; POSITIVE PION-PHOTOPRODUCTION; BARYON RESONANCES; MESON PHOTOPRODUCTION; PRECISE MEASUREMENT; GAMMA-P; N-PI; PROTON; DECAYS
http://scitation.aip.org/content/aip/proceeding/aipcp/10.1063/1.3701189
Intervento a convegno
D'Angelo, A., Ardashev, K., Bade, C., Bartalini, O., Bellini, V., Blecher, M., et al. (2012). Results from polarized experiments at LEGS and GRAAL. In 8TH INTERNATIONAL WORKSHOP ON THE PHYSICS OF EXCITED NUCLEONS (NSTAR 2011) (pp.56-61). Melville, New York -- USA : American Institute of Physics [10.1063/1.3701189].
D'Angelo, A; Ardashev, K; Bade, C; Bartalini, O; Bellini, V; Blecher, M; Bocquet, J; Capogni, M; Caracappa, A; Casano, L; Castoldi, M; Di Salvo, R; Fantini, A; Franco, D; Gervino, G; Ghio, F; Giardina, G; Gibson, C; Girolami, B; Giusa, A; Glukler, H; Hicks, K; Hoblit, S; Honig, A; Kageya, T; Khandaker, M; Kistner, O; Kizilgul, S; Kucuker, S; Lapik, A; Lehmann, A; Sandri, P; Lieres, A; Lowry, M; Lucas, M; Mahon, J; Mammoliti, F; Mandaglio, G; Manganaro, M; Miceli, L; Moricciani, D; Mushkarenkov, A; Nedorezov, V; Norum, B; Pap, M; Preedom, B; Seyfarth, H; Randieri, C; Rebreyend, D; Rudnev, N; Russo, G; Sandorfi, A; Schaerf, C; Sperduto, M; Stroher, H; Sutera, M; Thorn, C; Turinge, A; Vegna, V; Whisnant, C; Wang, K; Wei, X
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/97538
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