Transverse beam spin asymmetries at backward angles in elastic electron-proton and quasielastic electron-deuteron scattering

D. Androić; D. S. Armstrong; J. Arvieux; S. L. Bailey; D. H. Beck; E. J. Beise; J. Benesch; F. Benmokhtar; L. Bimbot; J. Birchall; P. Bosted; H. Breuer; C. L. Capuano; Y. C. Chao; A. Coppens; C. A. Davis; C. Ellis; G. Flores; G. Franklin; C. Furget; D. Gaskell; M. T.W. Gericke; J. Grames; G. Guillard; J. Hansknecht; T. Horn; M. K. Jones; P. M. King; W. Korsch; S. Kox; L. Lee; J. Liu; A. Lung; J. Mammei; J. W. Martin; R. D. McKeown; A. Micherdzinska; M. Mihovilovic; H. Mkrtchyan; M. Muether; S. A. Page; V. Papavassiliou; S. F. Pate; S. K. Phillips; P. Pillot; M. L. Pitt; M. Poelker; B. Quinn; W. D. Ramsay; J. S. Real; J. Roche; P. Roos; J. Schaub; T. Seva; N. Simicevic; G. R. Smith; D. T. Spayde; M. Stutzman; R. Suleiman; V. Tadevosyan; W. T.H. Van Oers; M. Versteegen; E. Voutier; W. Vulcan; S. P. Wells; S. E. Williamson; S. A. Wood; B. Pasquini; M. Vanderhaeghen

doi:10.1103/PhysRevLett.107.022501

Transverse beam spin asymmetries at backward angles in elastic electron-proton and quasielastic electron-deuteron scattering

D. Androić, D. S. Armstrong, J. Arvieux, S. L. Bailey, D. H. Beck, E. J. Beise, J. Benesch, F. Benmokhtar, L. Bimbot, J. Birchall, P. Bosted, H. Breuer, C. L. Capuano, Y. C. Chao, A. Coppens, C. A. Davis, C. Ellis, G. Flores, G. Franklin, C. FurgetD. Gaskell, M. T.W. Gericke, J. Grames, G. Guillard, J. Hansknecht, T. Horn, M. K. Jones, P. M. King, W. Korsch, S. Kox, L. Lee, J. Liu, A. Lung, J. Mammei, J. W. Martin, R. D. McKeown, A. Micherdzinska, M. Mihovilovic, H. Mkrtchyan, M. Muether, S. A. Page, V. Papavassiliou, S. F. Pate, S. K. Phillips, P. Pillot, M. L. Pitt, M. Poelker, B. Quinn, W. D. Ramsay, J. S. Real, J. Roche, P. Roos, J. Schaub, T. Seva, N. Simicevic, G. R. Smith, D. T. Spayde, M. Stutzman, R. Suleiman, V. Tadevosyan, W. T.H. Van Oers, M. Versteegen, E. Voutier, W. Vulcan, S. P. Wells, S. E. Williamson, S. A. Wood, B. Pasquini, M. Vanderhaeghen

Physics

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Abstract

We have measured the beam-normal single-spin asymmetries in elastic scattering of transversely polarized electrons from the proton, and performed the first measurement in quasielastic scattering on the deuteron, at backward angles (lab scattering angle of 108°) for Q2=0.22GeV2/c2 and 0.63GeV2/c2 at beam energies of 362 and 687MeV, respectively. The asymmetry arises due to the imaginary part of the interference of the two-photon exchange amplitude with that of single-photon exchange. Results for the proton are consistent with a model calculation which includes inelastic intermediate hadronic (πN) states. An estimate of the beam-normal single-spin asymmetry for the scattering from the neutron is made using a quasistatic deuterium approximation, and is also in agreement with theory.

Original language	English (US)
Article number	022501
Journal	Physical review letters
Volume	107
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.107.022501
State	Published - Jul 5 2011

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General Physics and Astronomy

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10.1103/PhysRevLett.107.022501

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Androić, D., Armstrong, D. S., Arvieux, J., Bailey, S. L., Beck, D. H., Beise, E. J., Benesch, J., Benmokhtar, F., Bimbot, L., Birchall, J., Bosted, P., Breuer, H., Capuano, C. L., Chao, Y. C., Coppens, A., Davis, C. A., Ellis, C., Flores, G., Franklin, G., ... Vanderhaeghen, M. (2011). Transverse beam spin asymmetries at backward angles in elastic electron-proton and quasielastic electron-deuteron scattering. Physical review letters, 107(2), Article 022501. https://doi.org/10.1103/PhysRevLett.107.022501

Androić, D, Armstrong, DS, Arvieux, J, Bailey, SL, Beck, DH, Beise, EJ, Benesch, J, Benmokhtar, F, Bimbot, L, Birchall, J, Bosted, P, Breuer, H, Capuano, CL, Chao, YC, Coppens, A, Davis, CA, Ellis, C, Flores, G, Franklin, G, Furget, C, Gaskell, D, Gericke, MTW, Grames, J, Guillard, G, Hansknecht, J, Horn, T, Jones, MK, King, PM, Korsch, W, Kox, S, Lee, L, Liu, J, Lung, A, Mammei, J, Martin, JW, McKeown, RD, Micherdzinska, A, Mihovilovic, M, Mkrtchyan, H, Muether, M, Page, SA, Papavassiliou, V, Pate, SF, Phillips, SK, Pillot, P, Pitt, ML, Poelker, M, Quinn, B, Ramsay, WD, Real, JS, Roche, J, Roos, P, Schaub, J, Seva, T, Simicevic, N, Smith, GR, Spayde, DT, Stutzman, M, Suleiman, R, Tadevosyan, V, Van Oers, WTH, Versteegen, M, Voutier, E, Vulcan, W, Wells, SP, Williamson, SE, Wood, SA, Pasquini, B & Vanderhaeghen, M 2011, 'Transverse beam spin asymmetries at backward angles in elastic electron-proton and quasielastic electron-deuteron scattering', Physical review letters, vol. 107, no. 2, 022501. https://doi.org/10.1103/PhysRevLett.107.022501

@article{02ad803ae13c4f52ad99ef4a3a8f87ab,

title = "Transverse beam spin asymmetries at backward angles in elastic electron-proton and quasielastic electron-deuteron scattering",

abstract = "We have measured the beam-normal single-spin asymmetries in elastic scattering of transversely polarized electrons from the proton, and performed the first measurement in quasielastic scattering on the deuteron, at backward angles (lab scattering angle of 108°) for Q2=0.22GeV2/c2 and 0.63GeV2/c2 at beam energies of 362 and 687MeV, respectively. The asymmetry arises due to the imaginary part of the interference of the two-photon exchange amplitude with that of single-photon exchange. Results for the proton are consistent with a model calculation which includes inelastic intermediate hadronic (πN) states. An estimate of the beam-normal single-spin asymmetry for the scattering from the neutron is made using a quasistatic deuterium approximation, and is also in agreement with theory.",

author = "D. Androi{\'c} and Armstrong, {D. S.} and J. Arvieux and Bailey, {S. L.} and Beck, {D. H.} and Beise, {E. J.} and J. Benesch and F. Benmokhtar and L. Bimbot and J. Birchall and P. Bosted and H. Breuer and Capuano, {C. L.} and Chao, {Y. C.} and A. Coppens and Davis, {C. A.} and C. Ellis and G. Flores and G. Franklin and C. Furget and D. Gaskell and Gericke, {M. T.W.} and J. Grames and G. Guillard and J. Hansknecht and T. Horn and Jones, {M. K.} and King, {P. M.} and W. Korsch and S. Kox and L. Lee and J. Liu and A. Lung and J. Mammei and Martin, {J. W.} and McKeown, {R. D.} and A. Micherdzinska and M. Mihovilovic and H. Mkrtchyan and M. Muether and Page, {S. A.} and V. Papavassiliou and Pate, {S. F.} and Phillips, {S. K.} and P. Pillot and Pitt, {M. L.} and M. Poelker and B. Quinn and Ramsay, {W. D.} and Real, {J. S.} and J. Roche and P. Roos and J. Schaub and T. Seva and N. Simicevic and Smith, {G. R.} and Spayde, {D. T.} and M. Stutzman and R. Suleiman and V. Tadevosyan and {Van Oers}, {W. T.H.} and M. Versteegen and E. Voutier and W. Vulcan and Wells, {S. P.} and Williamson, {S. E.} and Wood, {S. A.} and B. Pasquini and M. Vanderhaeghen",

year = "2011",

month = jul,

day = "5",

doi = "10.1103/PhysRevLett.107.022501",

language = "English (US)",

volume = "107",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "2",

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T1 - Transverse beam spin asymmetries at backward angles in elastic electron-proton and quasielastic electron-deuteron scattering

AU - Androić, D.

AU - Armstrong, D. S.

AU - Arvieux, J.

AU - Bailey, S. L.

AU - Beck, D. H.

AU - Beise, E. J.

AU - Benesch, J.

AU - Benmokhtar, F.

AU - Bimbot, L.

AU - Birchall, J.

AU - Bosted, P.

AU - Breuer, H.

AU - Capuano, C. L.

AU - Chao, Y. C.

AU - Coppens, A.

AU - Davis, C. A.

AU - Ellis, C.

AU - Flores, G.

AU - Franklin, G.

AU - Furget, C.

AU - Gaskell, D.

AU - Gericke, M. T.W.

AU - Grames, J.

AU - Guillard, G.

AU - Hansknecht, J.

AU - Horn, T.

AU - Jones, M. K.

AU - King, P. M.

AU - Korsch, W.

AU - Kox, S.

AU - Lee, L.

AU - Liu, J.

AU - Lung, A.

AU - Mammei, J.

AU - Martin, J. W.

AU - McKeown, R. D.

AU - Micherdzinska, A.

AU - Mihovilovic, M.

AU - Mkrtchyan, H.

AU - Muether, M.

AU - Page, S. A.

AU - Papavassiliou, V.

AU - Pate, S. F.

AU - Phillips, S. K.

AU - Pillot, P.

AU - Pitt, M. L.

AU - Poelker, M.

AU - Quinn, B.

AU - Ramsay, W. D.

AU - Real, J. S.

AU - Roche, J.

AU - Roos, P.

AU - Schaub, J.

AU - Seva, T.

AU - Simicevic, N.

AU - Smith, G. R.

AU - Spayde, D. T.

AU - Stutzman, M.

AU - Suleiman, R.

AU - Tadevosyan, V.

AU - Van Oers, W. T.H.

AU - Versteegen, M.

AU - Voutier, E.

AU - Vulcan, W.

AU - Wells, S. P.

AU - Williamson, S. E.

AU - Wood, S. A.

AU - Pasquini, B.

AU - Vanderhaeghen, M.

PY - 2011/7/5

Y1 - 2011/7/5

N2 - We have measured the beam-normal single-spin asymmetries in elastic scattering of transversely polarized electrons from the proton, and performed the first measurement in quasielastic scattering on the deuteron, at backward angles (lab scattering angle of 108°) for Q2=0.22GeV2/c2 and 0.63GeV2/c2 at beam energies of 362 and 687MeV, respectively. The asymmetry arises due to the imaginary part of the interference of the two-photon exchange amplitude with that of single-photon exchange. Results for the proton are consistent with a model calculation which includes inelastic intermediate hadronic (πN) states. An estimate of the beam-normal single-spin asymmetry for the scattering from the neutron is made using a quasistatic deuterium approximation, and is also in agreement with theory.

AB - We have measured the beam-normal single-spin asymmetries in elastic scattering of transversely polarized electrons from the proton, and performed the first measurement in quasielastic scattering on the deuteron, at backward angles (lab scattering angle of 108°) for Q2=0.22GeV2/c2 and 0.63GeV2/c2 at beam energies of 362 and 687MeV, respectively. The asymmetry arises due to the imaginary part of the interference of the two-photon exchange amplitude with that of single-photon exchange. Results for the proton are consistent with a model calculation which includes inelastic intermediate hadronic (πN) states. An estimate of the beam-normal single-spin asymmetry for the scattering from the neutron is made using a quasistatic deuterium approximation, and is also in agreement with theory.

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U2 - 10.1103/PhysRevLett.107.022501

DO - 10.1103/PhysRevLett.107.022501

M3 - Article

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AN - SCOPUS:79961075081

SN - 0031-9007

VL - 107

JO - Physical review letters

JF - Physical review letters

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ER -

Transverse beam spin asymmetries at backward angles in elastic electron-proton and quasielastic electron-deuteron scattering

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