J. Maxwell
Thomas Jefferson National Accelerator Facility
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Featured researches published by J. Maxwell.
Physical Review Letters | 2015
Fanelli C; E. Cisbani; D. Hamilton; Salmé G; B. Wojtsekhowski; A. Ahmidouch; Annand; H. Baghdasaryan; Beaufait J; P. Bosted; E. J. Brash; C. Butuceanu; P. Carter; E. Christy; E. Chudakov; S. Danagoulian; D. Day; P. V. Degtyarenko; R. Ent; H. Fenker; Fowler M; E. Frlez; D. Gaskell; R. Gilman; T. Horn; Günter Huber; de Jager Cw; E. Jensen; M. K. Jones; A. Kelleher
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 θ_{cm}^{p}=70°. 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 ~3 times larger than predicted by the generalized-parton-distribution-based calculations, which indicates a significant unknown contribution to the scattering amplitude.
arXiv: Nuclear Experiment | 2018
I. Albayrak; V. Mamyan; M. E. Christy; A. Ahmidouch; J. Arrington; A. Asaturyan; A. Bodek; P. Bosted; R. Bradford; E. J. Brash; A. Bruell; C. Butuceanu; S. J. Coleman; M. Commisso; Simon Henry Connell; M. M. Dalton; S. Danagoulian; A. Daniel; D. Day; S. Dhamija; J. Dunne; D. Dutta; R. Ent; D. Gaskell; A. Gasparian; R. Gran; T. Horn; Liting Huang; Günter Huber; C. Jayalath
