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(English) Results from polarized experiments at LEGS and GRAAL


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 Σ beam asymmetry for ω photoproduction has been measured by the GRAAL collaboration for both the ω→π0γ and the ω→π+ππ0 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.

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A. D’Angelo, K. Ardashev, C. Bade, O. Bartalini, V. Bellini, M. Blecher, J. P. Bocquet, M. Capogni, A. Caracappa, L. E. Casano, M. Castoldi, R. Di Salvo, A. Fantini, D. Franco, G. Gervino, F. Ghio, G. Giardina, C. Gibson, B. Girolami, A. Giusa, H. Glükler, K. Hicks, S. Hoblit, A. Honig, T. Kageya, M. Khandaker, O. C. Kistner, S. Kizilgul, S. Kucuker, A. Lapik, A. Lehmann, P. Levi Sandri, A. Lleres, M. Lowry, M. Lucas, J. Mahon, F. Mammoliti, G. Mandaglio, M. Manganaro, L. Miceli, D. Moricciani, A. Mushkarenkov, V. Nedorezov, B. Norum, M. Pap, B. Preedom, H. Seyfarth, C. Randieri, D. Rebreyend, N. Rudnev, G. Russo, A. Sandorfi, C. Schaerf, M. L. Sperduto, H. Ströher, M. C. Sutera, C. E. Thorn, A. Turinge, V. Vegna, C. S. Whisnant, K. Wang, X. Wei (2012)

NSTAR 2011, The 8th International Workshop on the Physics of Excited Nucleons, Newport News, VA, (USA) 17-20 May 2011. AIP Conference Proceedings – April 2012, Vol. 1432, Issue 1, pp. 56-61, ISSN: 0094-243X, doi: 10.1063/1.3701189.

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AIP Conference ProceedingsAIP Conference Proceedings report findings presented at many of the most important scientific meetings around the world. Published proceedings are valuable as topical status reports providing quick access to information before it appears in the traditional journal literature.

Cristian Randieri

Cristian Randieri is a brilliant intelligent and great proactivity person and an effective communicator and visionary. He has built a strong (and deserved) reputation as someone with vision, diligence and honour. Cristian is not a simple engineer but he is a real Scientist. His knowledge is not restricted to the area it covers, but its impressive passion for all the technical topics led him to acquire great skills even in areas far from his original studies. Cristian is able to address and solve complex technical problems with excellent results. He is a valuable writer with great scientific background formed with more than 15 years of active research on experimental Nuclear Physics performed in the most famous international research laboratories such as CERN, ESRF, INF. He write about HI-Tech solutions topics and advanced research study applied to industry. With more than 150 scientific & technical publications, he is also, a technical and famous writer in Italy due to his interviews released to the most famous Industrial Italian magazines. Actually, he is the President & CEO of Intellisystem Technologies an Italian Research & Developments company committed to develop and sell innovative and advanced solutions.

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