Coherent photoproduction of π+ from He3

R. Nasseripour, B. L. Berman, K. P. Adhikari, D. Adikaram, M. Anghinolfi, J. Ball, M. Battaglieri, V. Batourine, I. Bedlinskiy, A. S. Biselli, D. Branford, W. J. Briscoe, W. K. Brooks, V. D. Burkert, D. S. Carman, L. Casey, P. L. Cole, P. Collins, V. Crede, A. D'AngeloA. Daniel, N. Dashyan, R. De Vita, E. De Sanctis, A. Deur, B. Dey, R. Dickson, C. Djalali, D. Doughty, R. Dupre, H. Egiyan, A. El Alaoui, L. El Fassi, S. Fegan, A. Fradi, M. Y. Gabrielyan, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, J. T. Goetz, W. Gohn, R. W. Gothe, L. Graham, K. A. Griffioen, B. Guegan, K. Hafidi, H. Hakobyan, C. Hanretty, D. Heddle, M. Holtrop

Research output: Contribution to journalArticlepeer-review

Abstract

We have measured the differential cross section for the γHe3→π+t reaction. This reaction was studied using the Continuous Electron Beam Accelerator Facility (CEBAF) Large Acceptance Spectrometer (CLAS) at Jefferson Lab. Real photons produced with the Hall-B bremsstrahlung tagging system in the energy range from 0.50 to 1.55 GeV were incident on a cryogenic liquid He3 target. The differential cross sections for the γHe3→π+t reaction were measured as a function of photon-beam energy and pion-scattering angle. Theoretical predictions to date cannot explain the large cross sections except at backward angles, showing that additional components must be added to the model.

Original languageEnglish (US)
Article number034001
JournalPhysical Review C - Nuclear Physics
Volume83
Issue number3
DOIs
StatePublished - Mar 3 2011

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