# Coherent Photoproduction of $\pi^+$ from $^3$He

Abstract : We have measured the differential cross section for the $\gamma$^3He\rightarrow \pi^+ t reaction. This reaction was studied using the 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 ^3He target. The differential cross sections for the \gamma$^3$He$\rightarrow \pi^+ t$ 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.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00573745
Contributor : Emmanuelle Vernay <>
Submitted on : Monday, March 7, 2011 - 11:17:34 AM
Last modification on : Friday, November 27, 2020 - 5:52:10 AM

### Citation

R. Nasseripour, B.L. Berman, K.P. Adhikari, D. Adikaram, M. Anghinolfi, et al.. Coherent Photoproduction of $\pi^+$ from $^3$He. Physical Review C, American Physical Society, 2011, 83, pp.034001. ⟨10.1103/PhysRevC.83.034001⟩. ⟨in2p3-00573745⟩

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