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FIZIKA B 13 (2004) 1, 179-184
 
HELICITY-DEPENDENT ANGULAR DISTRIBUTIONS IN DOUBLE-CHARGED-PION
PHOTOPRODUCTION
S. STRAUCH
for the CLAS Collaboration
The George Washington University, Washington, D.C. 20052, USA
Received 28 August 2003; Accepted 26 April 2004
Online 10 October 2004
Two-pion photoproduction in the reaction gp ® pp+p- has been
studied at Jefferson Lab Hall B using a circularly polarized tagged-photon beam in the
energy range between 0.6 GeV and 2.3 GeV. Owing to the large angular acceptance
of the CLAS detector, complete beam-helicity-dependent angular distributions of the
final-state particles were measured. The large cross-section asymmetries exhibit strong
sensitivity to the kinematics of the reaction and provide valuable information on the
reaction dynamics. Preliminary results are presented.
PACS numbers: 13.60.-4, 13.60.Le, 13.88.+e
UDC 539.12
Keywords: double-charged pion photoproduction, circularly polarized photons
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