Differential cross section of gamma n -> K+Sigma(-) on bound neutrons with incident photons from 1.1 to 3.6 GeV

CLAS Collaboration, S. Anefalos Pereira, M. Mirazita, P. Rossi, E. De Sanctis, G. Niculescu, I. Niculescu, S. Stepanyan, K. P. Adhikari, M. Aghasyan, M. Anghinolfi, H. Baghdasaryan, J. Ball, M. Battaglieri, B. L. Berman, A. S. Biselli, C. Bookwalter, D. Branford, W. J. Briscoe, W. K. BrooksV. D. Burkert, S. L. Careccia, D. S. Carman, P. L. Cole, P. Collins, V. Crede, A. D'Angelo, A. Daniel, N. Dashyan, R. De Vita, A. Deur, B. Dey, S. Dhamija, R. Dickson, C. Djalali, D. Doughty, M. Dugger, R. Dupre, A. El Alaoui, P. Eugenio, S. Fegan, T. A. Forest, M. Y. Gabrielyan, G. Gavalian, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, J. T. Goetz, W. Gohn, R. W. Gothe, D. P. Watts

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Abstract

Differential cross sections of the reaction gamma d -> K+Sigma(-)(p) have been measured with the CLAS detector at Jefferson Lab using incident photons with energies between 1.1 and 3.6 GeV. This is the first complete set of strangeness photoproduction data on the neutron covering a broad angular range. At energies close to threshold and up to E-gamma similar to 1.8 GeV. the shape of the angular distribution is suggestive of the presence of s-channel production mechanisms. For E-gamma > 1.8 GeV, a clear forward peak appears and becomes more prominent as the photon energy increases, suggesting contributions from t-channel production mechanisms. These data can be used to constrain future analysis of this reaction. (c) 2010 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)289-293
Number of pages5
JournalPhysics Letters B
Volume688
Issue number4-5
DOIs
Publication statusPublished - 10 May 2010

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