Polarization Transfer in Wide-Angle Compton Scattering and Single-Pion Photoproduction from the Proton

Fanelli, C.; Cisbani, E.; Hamilton, D. J.; Salmé, G.; Wojtsekhowski, B.; Ahmidouch, A.; Annand, J. R.  M.; Baghdasaryan, H.; Beaufait, J.; Bosted, P.; Brash, E. J.; Butuceanu, C.; Carter, P.; Christy, E.; Chudakov, E.; Danagoulian, S.; Day, D.; Degtyarenko, P.; Ent, R.; Fenker, H.; Fowler, M.; Frlez, E.; Gaskell, D.; Gilman, R.; Horn, T.; Huber, G. M.; de Jager, C. W.; Jensen, E.; Jones, M. K.; Kelleher, A.; Keppel, C.; Khandaker, M.; Kohl, M.; Kumbartzki, G.; Lassiter, S.; Li, Y.; Lindgren, R.; Lovelace, H.; Luo, W.; Mack, D.; Mamyan, V.; Margaziotis, D. J.; Markowitz, P.; Maxwell, J.; Mbianda, G.; Meekins, D.; Meziane, M.; Miller, J.; Mkrtchyan, A.; Mkrtchyan, H.; Mulholland, J.; Nelyubin, V.; Pentchev, L.; Perdrisat, C. F.; Piasetzky, E.; Prok, Y.; Puckett, A. J.  R.; Punjabi, V.; Shabestari, M.; Shahinyan, A.; Slifer, K.; Smith, G.; Solvignon, P.; Subedi, R.; Wesselmann, F. R.; Wood, S.; Ye, Z.; Zheng, X.

doi:10.1103/PhysRevLett.115.152001

Polarization Transfer in Wide-Angle Compton Scattering and Single-Pion Photoproduction from the Proton

Journal Article · Thu Oct 01 04:00:00 EDT 2015 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.115.152001· OSTI ID:1390919

Fanelli, C.; Cisbani, E.; Hamilton, D. J.; Salmé, G.; Wojtsekhowski, B.; Ahmidouch, A.; Annand, J. R. M.; Baghdasaryan, H.; Beaufait, J.; Bosted, P.; Brash, E. J.; Butuceanu, C.; Carter, P.; Christy, E.; Chudakov, E.; Danagoulian, S.; Day, D.; Degtyarenko, P.; Ent, R.; Fenker, H. more »

Wide-angle exclusive Compton scattering and single-pion photoproduction from the proton have been investigated via measurement of the polarization transfer from a circularly polarized photon beam to the recoil proton. The wide-angle Compton scattering polarization transfer was analyzed at an incident photon energy of 3.7 GeV at a proton scattering angle of theta(p)(cm) cm = 70 degrees. The longitudinal transfer K-LL, measured to be 0.645 +/- 0.059 +/- 0.048, where the first error is statistical and the second is systematic, has the same sign as predicted for the reaction mechanism in which the photon interacts with a single quark carrying the spin of the proton. However, the observed value is similar to 3 times larger than predicted by the generalized-parton-distribution-based calculations, which indicates a significant unknown contribution to the scattering amplitude.

Research Organization:: Argonne National Laboratory (ANL)

Sponsoring Organization:: USDOE Office of Science - Office of Nuclear Physics; United Kingdom Science and Technology Facilities Council; National Science Foundation (NSF)

DOE Contract Number:: AC02-06CH11357

OSTI ID:: 1390919

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 15 Vol. 115; ISSN 0031-9007; ISSN PRLTAO

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

References (36)

Compton-Scattering Cross Section on the Proton at High Momentum Transfer Danagoulian, A.; Mamyan, V. H.; Roedelbronn, M. Physical Review Letters, Vol. 98, Issue 15 https://doi.org/10.1103/PhysRevLett.98.152001	journal	April 2007
Wave Functions, Evolution Equations and Evolution Kernels from Light-Ray Operators of QCD Müller, D.; Robaschik, D.; Geyer, B. Fortschritte der Physik/Progress of Physics, Vol. 42, Issue 2 https://doi.org/10.1002/prop.2190420202	journal	January 1994
Proton elastic form factor ratios to Q 2 = 3.5 GeV 2 by polarization transfer Punjabi, V.; Perdrisat, C. F.; Aniol, K. A. Physical Review C, Vol. 71, Issue 5 https://doi.org/10.1103/PhysRevC.71.055202	journal	May 2005
QCD radiative corrections to the soft spectator contribution in the wide angle Compton scattering Kivel, N.; Vanderhaeghen, M. Nuclear Physics B, Vol. 883 https://doi.org/10.1016/j.nuclphysb.2014.03.019	journal	June 2014
Compton scattering and the nucleon valence wavefunction Vanderhaeghen, M.; Guichon, P. A. M.; Van de Wiele, J. Nuclear Physics A, Vol. 622, Issue 1-2 https://doi.org/10.1016/S0375-9474(97)00339-4	journal	August 1997
Recalculation of proton Compton scattering in perturbative QCD Brooks, T.; Dixon, L. Physical Review D, Vol. 62, Issue 11 https://doi.org/10.1103/PhysRevD.62.114021	journal	November 2000
Measurement of G E p / G M p in e → p → e p → to Q 2 = 5.6 GeV 2 Gayou, O.; Aniol, K. A.; Averett, T. Physical Review Letters, Vol. 88, Issue 9 https://doi.org/10.1103/PhysRevLett.88.092301	journal	February 2002
Two-photon exchange corrections to elastic electron-proton scattering at large momentum transfer within the SCET approach Kivel, N.; Vanderhaeghen, M. Journal of High Energy Physics, Vol. 2013, Issue 4 https://doi.org/10.1007/JHEP04(2013)029	journal	April 2013
Nonforward parton densities and soft mechanism for form factors and wide-angle Compton scattering in QCD Radyushkin, A. V. Physical Review D, Vol. 58, Issue 11 https://doi.org/10.1103/PhysRevD.58.114008	journal	October 1998
Light front cloudy bag model: Nucleon electromagnetic form factors Miller, Gerald A. Physical Review C, Vol. 66, Issue 3 https://doi.org/10.1103/PhysRevC.66.032201	journal	September 2002
Scaling Laws at Large Transverse Momentum Brodsky, Stanley J.; Farrar, Glennys R. Physical Review Letters, Vol. 31, Issue 18 https://doi.org/10.1103/PhysRevLett.31.1153	journal	October 1973
Real and virtual Compton scattering in a Regge approach Cano, F.; Laget, J. -M Physics Letters B, Vol. 551, Issue 3-4 https://doi.org/10.1016/S0370-2693(02)03075-7	journal	January 2003
Polarization measurements in neutral pion photoproduction Wijesooriya, K.; Afanasev, A.; Amarian, M. Physical Review C, Vol. 66, Issue 3 https://doi.org/10.1103/PhysRevC.66.034614	journal	September 2002
Survey of Nucleon Electromagnetic Form Factors Cloët, I. C.; Eichmann, G.; El-Bennich, B. Few-Body Systems, Vol. 46, Issue 1 https://doi.org/10.1007/s00601-009-0015-x	journal	March 2009
Perturbative QCD calculation of real and virtual Compton scattering Farrar, Glennys R.; Zhang, Huayi Physical Review D, Vol. 41, Issue 11 https://doi.org/10.1103/PhysRevD.41.3348	journal	June 1990
Unraveling hadron structure with generalized parton distributions Belitsky, A. V.; Radyushkin, A. V. Physics Reports, Vol. 418, Issue 1-6 https://doi.org/10.1016/j.physrep.2005.06.002	journal	October 2005
Automodellism in the large-angle elastic scattering and structure of hadrons Matveev, V. A.; Muradyan, R. M.; Tavkhelidze, A. N. Lettere Al Nuovo Cimento Series 2, Vol. 7, Issue 15 https://doi.org/10.1007/BF02728133	journal	August 1973
Final analysis of proton form factor ratio data at Q 2 = 4.0 , 4.8, and 5.6 GeV 2 Puckett, A. J. R.; Brash, E. J.; Gayou, O. Physical Review C, Vol. 85, Issue 4 https://doi.org/10.1103/PhysRevC.85.045203	journal	April 2012
COSY INFINITY version 8 Makino, Kyoko; Berz, Martin Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 427, Issue 1-2 https://doi.org/10.1016/S0168-9002(98)01554-X	journal	May 1999
Neutral-pion photoproduction and proton Compton scattering at large angles Shupe, M. A.; Milburn, R. H.; Quinn, D. J. Physical Review D, Vol. 19, Issue 7 https://doi.org/10.1103/PhysRevD.19.1921	journal	April 1979
Handling the handbag diagram in Compton scattering on the proton Miller, Gerald A. Physical Review C, Vol. 69, Issue 5 https://doi.org/10.1103/PhysRevC.69.052201	journal	May 2004
Large-momentum-transfer Compton scattering Farrar, Glennys; Zhang, Huayi Physical Review Letters, Vol. 65, Issue 14 https://doi.org/10.1103/PhysRevLett.65.1721	journal	October 1990
Flavor Decomposition of the Elastic Nucleon Electromagnetic Form Factors Cates, G. D.; de Jager, C. W.; Riordan, S. Physical Review Letters, Vol. 106, Issue 25 https://doi.org/10.1103/PhysRevLett.106.252003	journal	June 2011
Perturbative and non-perturbative QCD corrections to wide-angle Compton scattering Huang, H. W.; Kroll, P.; Morii, T. The European Physical Journal C, Vol. 23, Issue 2 https://doi.org/10.1007/s100520100883	journal	March 2002
Nucleon Compton scattering in perturbative QCD Kronfeld, A. S.; Nižić, B. Physical Review D, Vol. 44, Issue 11 https://doi.org/10.1103/PhysRevD.44.3445	journal	December 1991
G E p / G M p Ratio by Polarization Transfer in e → p → e p → Jones, M. K.; Aniol, K. A.; Baker, F. T. Physical Review Letters, Vol. 84, Issue 7 https://doi.org/10.1103/PhysRevLett.84.1398	journal	February 2000
Scaling limit of deeply virtual compton scattering Radyushkin, A. V. Physics Letters B, Vol. 380, Issue 3-4 https://doi.org/10.1016/0370-2693(96)00528-X	journal	July 1996
Polarization Components in π 0 Photoproduction at Photon Energies up to 5.6 GeV Luo, W.; Brash, E. J.; Gilman, R. Physical Review Letters, Vol. 108, Issue 22 https://doi.org/10.1103/PhysRevLett.108.222004	journal	May 2012
Publisher's Note: Proton elastic form factor ratios to Q 2 = 3.5 GeV 2 by polarization transfer [Phys. Rev. C 71, 055202 (2005)] Punjabi, V.; Perdrisat, C. F.; Aniol, K. A. Physical Review C, Vol. 71, Issue 6 https://doi.org/10.1103/PhysRevC.71.069902	journal	June 2005
Wave functions of octet baryons Chernyak, V. L.; Ogloblin, A. A.; Zhitnitsky, I. R. Zeitschrift für Physik C Particles and Fields, Vol. 42, Issue 4 https://doi.org/10.1007/BF01557663	journal	December 1989
Gauge-Invariant Decomposition of Nucleon Spin Ji, Xiangdong Physical Review Letters, Vol. 78, Issue 4 https://doi.org/10.1103/PhysRevLett.78.610	journal	January 1997
Polarization Transfer in Proton Compton Scattering at High Momentum Transfer Hamilton, D. J.; Mamyan, V. H.; Aniol, K. A. Physical Review Letters, Vol. 94, Issue 24 https://doi.org/10.1103/PhysRevLett.94.242001	journal	June 2005
Proton mass effects in wide-angle Compton scattering Diehl, M.; Feldmann, Th.; Huang, H. W. Physical Review D, Vol. 67, Issue 3 https://doi.org/10.1103/PhysRevD.67.037502	journal	February 2003
Aspects of hadron physics Roberts, C. D.; Bhagwat, M. S.; Höll, A. The European Physical Journal Special Topics, Vol. 140, Issue 1 https://doi.org/10.1140/epjst/e2007-00003-5	journal	January 2007
Linking parton distributions to form factors and Compton scattering Diehl, M.; Feldmann, Th.; Jakob, R. The European Physical Journal C, Vol. 8, Issue 3 https://doi.org/10.1007/s100529901100	journal	May 1999
Perturbative and non-perturbative QCD corrections to wide-angle Compton scattering Huang, H. W.; Kroll, P.; Morii, T. The European Physical Journal C, Vol. 31, Issue 2 https://doi.org/10.1140/epjc/s2003-01361-7	journal	November 2003

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