Abstract
Pion photoproduction in the \(\gamma p \rightarrow \pi ^0 p\) reaction has been measured in the FROST experiment at the Thomas Jefferson National Accelerator Facility. In this experiment, circularly polarized photons with energies up to 3.082 GeV impinged on a transversely polarized frozen-spin target. Final-state protons were detected in the CEBAF Large Acceptance Spectrometer. Preliminary results of the polarization observables T and F have been extracted. The data generally agree with predictions of present partial-wave analyses, but also show marked differences. The data will constrain further partial wave analyses and improve the extraction of proton resonance properties.
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References
I.S. Barker, A. Donnachie, J.K. Storrow, Nucl. Phys. B 95, 347 (1975). https://doi.org/10.1016/0550-3213(75)90049-8
B.A. Mecking et al., Nucl. Instrum. Methods A503, 513 (2003). https://doi.org/10.1016/S0168-9002(03)01001-5
D. Sober et al., Nucl. Instrum. Methods A 440, 263 (2000). https://doi.org/10.1016/S0168-9002(99)00784-6
H. Olsen, L.C. Maximon, Phys. Rev. 114, 887 (1959). https://doi.org/10.1103/PhysRev.114.887
Circular Beam Polarization (2017). https://clasweb.jlab.org/rungroups/g9/wiki/index.php/Circular_Beam_Polarization
C. Keith, J. Brock, C. Carlin, S. Comer, D. Kashy, J. McAndrew, D. Meekins, E. Pasyuk, J. Pierce, M. Seely, Nucl. Instrum. Methods A 684, 27 (2012). https://doi.org/10.1016/j.nima.2012.04.067
D. Besset et al., Nucl. Instrum. Methods A 166(3), 515 (1979)
M. Dugger et al., CLAS-Note 2008-05 (2008)
P.T. Mattione et al., Phys. Rev. C 96(3), 035204 (2017). https://doi.org/10.1103/PhysRevC.96.035204
A.V. Anisovich, A. Sarantsev, O. Bartholomy, E. Klempt, V.A. Nikonov, U. Thoma, Eur. Phys. J. A 25, 427 (2005). https://doi.org/10.1140/epja/i2005-10120-5
D. Drechsel, S.S. Kamalov, L. Tiator, Eur. Phys. J. A 34, 69 (2007)
J.R.M. Annand et al., Phys. Rev. C 93, 055209 (2016). https://doi.org/10.1103/PhysRevC.93.055209
J. Hartmann et al., Phys. Rev. Lett. 113, 062001 (2014)
P. Feller et al., Nucl. Phys. B 110, 397 (1976)
M. Fukushima et al., Nucl. Phys. B 136, 189 (1978)
P. Booth et al., Nucl. Phys. B 121, 45 (1977)
P. Bussey et al., Nucl. Phys. B 154, 492 (1979)
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This work is supported in parts by NSF PHY-1505615.
This article belongs to the Topical Collection “NSTAR 2017—The International Workshop on the Physics of Excited Nucleons”.
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Jiang, H., Strauch, S. & For the CLAS Collaboration. Polarization Observables T and F in \(\pi ^0\) Photoproduction Off the Proton with CLAS g9 Experiment. Few-Body Syst 59, 125 (2018). https://doi.org/10.1007/s00601-018-1444-1
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DOI: https://doi.org/10.1007/s00601-018-1444-1