Document Type
Article
Publication Date
2005
DOI
10.1103/PhysRevLett.95.162003
Publication Title
Physical Review Letters
Volume
95
Issue
16
Pages
1-5
Abstract
Beam-helicity asymmetries for the two-pion-photoproduction reaction 𝛾⃗p → p π+π- have been studied for the first time in the resonance region for center-of-mass energies between 1.35 and 2.30 GeV. The experiment was performed at Jefferson Lab with the CEBAF Large Acceptance Spectrometer using circularly polarized tagged photons incident on an unpolarized hydrogen target. Beam-helicity-dependent angular distributions of the final-state particles were measured. The large cross-section asymmetries exhibit strong sensitivity to the kinematics and dynamics of the reaction. The data are compared with the results of various phenomenological model calculations, and show that these models currently do not provide an adequate description for the behavior of this new observable.
Original Publication Citation
Bültmann, S., Dodge, G., Hyde-Wright, C.E., Klien, A, Kuhn, S.E., Weinstein, L.B., CLAS Collaboration (2005). Beam-helicity asymmetries in double-charged-pion photoproduction on the proton. Physical Review Letters, 95(16), 1-5, Article 162003. https://doi.org/10.1103/PhysRevLett.95.162003
ORCID
0000-0003-1582-2376 (Dodge), 0000-0001-7282-8120 (Hyde-Wright), 0000-0003-2243-6836 (Kuhn)
Repository Citation
Bagdasaryan, H.; Bektasoglu, M.; Bültmann, S.; Dodge, Gail; Guler, N.; Hyde-Wright, C. E.; Juengst, H. G.; Klein, A.; Kuhn, S. E.; Qin, L. M.; Roberts, W.; Sabatié, F.; Tkachenko, S.; Weinstein, L. B.; Yun, J.; Zhang, J.; et al.; and CLAS Collaboration, "Beam-Helicity Asymmetries in Double-Charged-Pion Photoproduction on the Proton" (2005). Physics Faculty Publications. 461.
https://digitalcommons.odu.edu/physics_fac_pubs/461
Comments
© 2005 American Physical Society
"Yes, the author or the author's employer may use all or part of the APS published article, including the APS-prepared version (e.g., the PDF from the online journal) without revision or modification, on the author's or employer's website as long as a fee is not charged. If a fee is charged, then APS permission must be sought. In all cases, the appropriate bibliographic citation and notice of the APS copyright must be included."
Publisher's version available at: https://doi.org/10.1103/PhysRevLett.95.162003