First measurement of the helicity dependence of He-3 photoreactions in the Delta(1232) resonance region

Bartolome, P. et al. (2013) First measurement of the helicity dependence of He-3 photoreactions in the Delta(1232) resonance region. Physics Letters B, 723(1-3), pp. 71-77. (doi:10.1016/j.physletb.2013.04.057)

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Abstract

The first measurement of the helicity dependence of the total inclusive He-3 photo-absorption cross section and of the partial cross sections for several reaction channels was carried out at MAMI (Mainz) in the photon energy range between 150 and 500 MeV. The experiment used the large acceptance Crystal Ball spectrometer, complemented by charged particle and vertex detectors, a circularly polarised tagged photon beam and a longitudinally polarised high-pressure He-3 gas target. The results obtained give information on the GDH integral on He-3 and on the neutron and allow an investigation of the modifications of nucleon properties inside He-3.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Middleton, Mr Duncan and Livingston, Dr Kenneth and Howdle, Mr David and Mancell, Mr Joe and Glazier, Dr Derek and McGeorge, Dr John and MacGregor, Professor I and Annand, Dr John and Hamilton, Dr David and Rosner, Professor Guenther
Authors: Bartolome, P., Mushkarenkov, A., Ahrens, J., Annand, J.R.M., Arends, H.J., Beck, R., Bekrenev, V., Berghaeuser, H., Braghieri, A., Briscoe, W.J., Cherepnya, S.N., Costanza, S., Drexler, P., Fil'kov, L. V., Fix, A., Giardina, G., Glazier, D. I., Hamilton, D., Heid, E., Heil, W., Hornidge, D., Howdle, D., Jaegle, I., Jahn, O., Jude, T., Kashevarov, V. L., Keshelashvili, I., Kondratiev, R., Korolija, M., Krimmer, J., Krusche, B., Kruglov, S., Kulbardis, A., Lisin, V., Livingston, K., Mancell, J., Middleton, D.G., MacGregor, I.J.D., Manley, D.M., McGeorge, J.C., Metag, V., Nefkens, B.M.K., Nikolaev, A., Oberle, M., Ostrick, M., Ortega, H., Otte, P.B., Oussena, B., Pedroni, P., Pheron, F., Prakhov, S., Polonski, A., Rigamonti, F., Romaniuk, M., Rosner, G., Rostomyan, T., Schumann, S., Sobers, D., Starostin, A., Supek, I., Thiel, M., Thomas, A., Unverzagt, M., Watts, D., and Werthmueller, D.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physics Letters B
Journal Abbr.:Phys. Lett. B
Publisher:Elsevier BV
ISSN:0370-2693
ISSN (Online):1873-2445

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
570711Nuclear Physics GroupDavid IrelandScience & Technologies Facilities Council (STFC)ST/J000175/1P&A - PHYSICS & ASTRONOMY