Measurement of the beam-normal single-spin asymmetry for elastic electron scattering from C 12 and Al 27

D. Androić; D. S. Armstrong; A. Asaturyan; K. Bartlett; R. S. Beminiwattha; J. Benesch; F. Benmokhtar; J. Birchall; R. D. Carlini; M. E. Christy; J. C. Cornejo; S. Covrig Dusa; M. M. Dalton; C. A. Davis; W. Deconinck; J. F. Dowd; J. A. Dunne; D. Dutta; W. S. Duvall; M. Elaasar; W. R. Falk; J. M. Finn; T. Forest; C. Gal; D. Gaskell; M. T.W. Gericke; V. M. Gray; F. Guo; J. R. Hoskins; D. C. Jones; M. Kargiantoulakis; P. M. King; E. Korkmaz; S. Kowalski; J. Leacock; J. P. Leckey; A. R. Lee; J. H. Lee; L. Lee; S. Macewan; D. Mack; J. A. Magee; R. Mahurin; J. Mammei; J. W. Martin; M. J. McHugh; D. Meekins; K. E. Mesick; R. Michaels; A. Mkrtchyan; H. Mkrtchyan; A. Narayan; L. Z. Ndukum; V. Nelyubin; Nuruzzaman; W. T.H. Van Oers; V. F. Owen; S. A. Page; J. Pan; K. D. Paschke; S. K. Phillips; M. L. Pitt; R. W. Radloff; J. F. Rajotte; W. D. Ramsay; J. Roche; B. Sawatzky; T. Seva; M. H. Shabestari; R. Silwal; N. Simicevic; G. R. Smith; P. Solvignon; D. T. Spayde; A. Subedi; R. Subedi; R. Suleiman; V. Tadevosyan; W. A. Tobias; V. Tvaskis; B. Waidyawansa; P. Wang; S. P. Wells; S. A. Wood; P. Zang; S. Zhamkochyan

doi:10.1103/PhysRevC.104.014606

Measurement of the beam-normal single-spin asymmetry for elastic electron scattering from C 12 and Al 27

D. Androić, D. S. Armstrong, A. Asaturyan, K. Bartlett, R. S. Beminiwattha, J. Benesch, F. Benmokhtar, J. Birchall, R. D. Carlini, M. E. Christy, J. C. Cornejo, S. Covrig Dusa, M. M. Dalton, C. A. Davis, W. Deconinck, J. F. Dowd, J. A. Dunne, D. Dutta, W. S. Duvall, M. ElaasarW. R. Falk, J. M. Finn, T. Forest, C. Gal, D. Gaskell, M. T.W. Gericke, V. M. Gray, F. Guo, J. R. Hoskins, D. C. Jones, M. Kargiantoulakis, P. M. King, E. Korkmaz, S. Kowalski, J. Leacock, J. P. Leckey, A. R. Lee, J. H. Lee, L. Lee, S. Macewan, D. Mack, J. A. Magee, R. Mahurin, J. Mammei, J. W. Martin, M. J. McHugh, D. Meekins, K. E. Mesick, R. Michaels, A. Mkrtchyan, H. Mkrtchyan, A. Narayan, L. Z. Ndukum, V. Nelyubin, Nuruzzaman, W. T.H. Van Oers, V. F. Owen, S. A. Page, J. Pan, K. D. Paschke, S. K. Phillips, M. L. Pitt, R. W. Radloff, J. F. Rajotte, W. D. Ramsay, J. Roche, B. Sawatzky, T. Seva, M. H. Shabestari, R. Silwal, N. Simicevic, G. R. Smith, P. Solvignon, D. T. Spayde, A. Subedi, R. Subedi, R. Suleiman, V. Tadevosyan, W. A. Tobias, V. Tvaskis, B. Waidyawansa, P. Wang, S. P. Wells, S. A. Wood, P. Zang, S. Zhamkochyan

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Abstract

We report measurements of the parity-conserving beam-normal single-spin elastic scattering asymmetries Bn on C12 and Al27, obtained with an electron beam polarized transverse to its momentum direction. These measurements add an additional kinematic point to a series of previous measurements of Bn on C12 and provide a first measurement on Al27. The experiment utilized the Qweak apparatus at Jefferson Lab with a beam energy of 1.158 GeV. The average laboratory scattering angle for both targets was 7.7∘, and the average Q2 for both targets was 0.024 37 GeV2 (Q=0.1561 GeV). The asymmetries are Bn=-10.68±0.90(stat)±0.57(syst) ppm for C12 and Bn=-12.16±0.58(stat)±0.62(syst) ppm for Al27. The results are consistent with theoretical predictions, and are compared to existing data. When scaled by Z/A, the Q dependence of all the far-forward angle (θ<10∘) data from H1 to Al27 can be described by the same slope out to Q≈0.35 GeV. Larger-angle data from other experiments in the same Q range are consistent with a slope about twice as steep.

Original language	English
Article number	014606
Journal	Physical Review C
Volume	104
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.104.014606
Publication status	Published - 1 Jul 2021
Externally published	Yes

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10.1103/PhysRevC.104.014606

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Androić, D., Armstrong, D. S., Asaturyan, A., Bartlett, K., Beminiwattha, R. S., Benesch, J., Benmokhtar, F., Birchall, J., Carlini, R. D., Christy, M. E., Cornejo, J. C., Dusa, S. C., Dalton, M. M., Davis, C. A., Deconinck, W., Dowd, J. F., Dunne, J. A., Dutta, D., Duvall, W. S., ... Zhamkochyan, S. (2021). Measurement of the beam-normal single-spin asymmetry for elastic electron scattering from C 12 and Al 27. Physical Review C, 104(1), Article 014606. https://doi.org/10.1103/PhysRevC.104.014606

@article{d0c0a21ab49e4743ae8875ea29f18735,

title = "Measurement of the beam-normal single-spin asymmetry for elastic electron scattering from C 12 and Al 27",

abstract = "We report measurements of the parity-conserving beam-normal single-spin elastic scattering asymmetries Bn on C12 and Al27, obtained with an electron beam polarized transverse to its momentum direction. These measurements add an additional kinematic point to a series of previous measurements of Bn on C12 and provide a first measurement on Al27. The experiment utilized the Qweak apparatus at Jefferson Lab with a beam energy of 1.158 GeV. The average laboratory scattering angle for both targets was 7.7∘, and the average Q2 for both targets was 0.024 37 GeV2 (Q=0.1561 GeV). The asymmetries are Bn=-10.68±0.90(stat)±0.57(syst) ppm for C12 and Bn=-12.16±0.58(stat)±0.62(syst) ppm for Al27. The results are consistent with theoretical predictions, and are compared to existing data. When scaled by Z/A, the Q dependence of all the far-forward angle (θ<10∘) data from H1 to Al27 can be described by the same slope out to Q≈0.35 GeV. Larger-angle data from other experiments in the same Q range are consistent with a slope about twice as steep.",

author = "D. Androi{\'c} and Armstrong, \{D. S.\} and A. Asaturyan and K. Bartlett and Beminiwattha, \{R. S.\} and J. Benesch and F. Benmokhtar and J. Birchall and Carlini, \{R. D.\} and Christy, \{M. E.\} and Cornejo, \{J. C.\} and Dusa, \{S. Covrig\} and Dalton, \{M. M.\} and Davis, \{C. A.\} and W. Deconinck and Dowd, \{J. F.\} and Dunne, \{J. A.\} and D. Dutta and Duvall, \{W. S.\} and M. Elaasar and Falk, \{W. R.\} and Finn, \{J. M.\} and T. Forest and C. Gal and D. Gaskell and Gericke, \{M. T.W.\} and Gray, \{V. M.\} and F. Guo and Hoskins, \{J. R.\} and Jones, \{D. C.\} and M. Kargiantoulakis and King, \{P. M.\} and E. Korkmaz and S. Kowalski and J. Leacock and Leckey, \{J. P.\} and Lee, \{A. R.\} and Lee, \{J. H.\} and L. Lee and S. Macewan and D. Mack and Magee, \{J. A.\} and R. Mahurin and J. Mammei and Martin, \{J. W.\} and McHugh, \{M. J.\} and D. Meekins and Mesick, \{K. E.\} and R. Michaels and A. Mkrtchyan and H. Mkrtchyan and A. Narayan and Ndukum, \{L. Z.\} and V. Nelyubin and Nuruzzaman and \{Van Oers\}, \{W. T.H.\} and Owen, \{V. F.\} and Page, \{S. A.\} and J. Pan and Paschke, \{K. D.\} and Phillips, \{S. K.\} and Pitt, \{M. L.\} and Radloff, \{R. W.\} and Rajotte, \{J. F.\} and Ramsay, \{W. D.\} and J. Roche and B. Sawatzky and T. Seva and Shabestari, \{M. H.\} and R. Silwal and N. Simicevic and Smith, \{G. R.\} and P. Solvignon and Spayde, \{D. T.\} and A. Subedi and R. Subedi and R. Suleiman and V. Tadevosyan and Tobias, \{W. A.\} and V. Tvaskis and B. Waidyawansa and P. Wang and Wells, \{S. P.\} and Wood, \{S. A.\} and P. Zang and S. Zhamkochyan",

note = "Publisher Copyright: {\textcopyright} 2021 American Physical Society.",

year = "2021",

month = jul,

day = "1",

doi = "10.1103/PhysRevC.104.014606",

language = "English",

volume = "104",

journal = "Physical Review C",

issn = "2469-9985",

number = "1",

}

Androić, D, Armstrong, DS, Asaturyan, A, Bartlett, K, Beminiwattha, RS, Benesch, J, Benmokhtar, F, Birchall, J, Carlini, RD, Christy, ME, Cornejo, JC, Dusa, SC, Dalton, MM, Davis, CA, Deconinck, W, Dowd, JF, Dunne, JA, Dutta, D, Duvall, WS, Elaasar, M, Falk, WR, Finn, JM, Forest, T, Gal, C, Gaskell, D, Gericke, MTW, Gray, VM, Guo, F, Hoskins, JR, Jones, DC, Kargiantoulakis, M, King, PM, Korkmaz, E, Kowalski, S, Leacock, J, Leckey, JP, Lee, AR, Lee, JH, Lee, L, Macewan, S, Mack, D, Magee, JA, Mahurin, R, Mammei, J, Martin, JW, McHugh, MJ, Meekins, D, Mesick, KE, Michaels, R, Mkrtchyan, A, Mkrtchyan, H, Narayan, A, Ndukum, LZ, Nelyubin, V, Nuruzzaman, Van Oers, WTH, Owen, VF, Page, SA, Pan, J, Paschke, KD, Phillips, SK, Pitt, ML, Radloff, RW, Rajotte, JF, Ramsay, WD, Roche, J, Sawatzky, B, Seva, T, Shabestari, MH, Silwal, R, Simicevic, N, Smith, GR, Solvignon, P, Spayde, DT, Subedi, A, Subedi, R, Suleiman, R, Tadevosyan, V, Tobias, WA, Tvaskis, V, Waidyawansa, B, Wang, P, Wells, SP, Wood, SA, Zang, P & Zhamkochyan, S 2021, 'Measurement of the beam-normal single-spin asymmetry for elastic electron scattering from C 12 and Al 27', Physical Review C, vol. 104, no. 1, 014606. https://doi.org/10.1103/PhysRevC.104.014606

TY - JOUR

T1 - Measurement of the beam-normal single-spin asymmetry for elastic electron scattering from C 12 and Al 27

AU - Androić, D.

AU - Armstrong, D. S.

AU - Asaturyan, A.

AU - Bartlett, K.

AU - Beminiwattha, R. S.

AU - Benesch, J.

AU - Benmokhtar, F.

AU - Birchall, J.

AU - Carlini, R. D.

AU - Christy, M. E.

AU - Cornejo, J. C.

AU - Dusa, S. Covrig

AU - Dalton, M. M.

AU - Davis, C. A.

AU - Deconinck, W.

AU - Dowd, J. F.

AU - Dunne, J. A.

AU - Dutta, D.

AU - Duvall, W. S.

AU - Elaasar, M.

AU - Falk, W. R.

AU - Finn, J. M.

AU - Forest, T.

AU - Gal, C.

AU - Gaskell, D.

AU - Gericke, M. T.W.

AU - Gray, V. M.

AU - Guo, F.

AU - Hoskins, J. R.

AU - Jones, D. C.

AU - Kargiantoulakis, M.

AU - King, P. M.

AU - Korkmaz, E.

AU - Kowalski, S.

AU - Leacock, J.

AU - Leckey, J. P.

AU - Lee, A. R.

AU - Lee, J. H.

AU - Lee, L.

AU - Macewan, S.

AU - Mack, D.

AU - Magee, J. A.

AU - Mahurin, R.

AU - Mammei, J.

AU - Martin, J. W.

AU - McHugh, M. J.

AU - Meekins, D.

AU - Mesick, K. E.

AU - Michaels, R.

AU - Mkrtchyan, A.

AU - Mkrtchyan, H.

AU - Narayan, A.

AU - Ndukum, L. Z.

AU - Nelyubin, V.

AU - Nuruzzaman,

AU - Van Oers, W. T.H.

AU - Owen, V. F.

AU - Page, S. A.

AU - Pan, J.

AU - Paschke, K. D.

AU - Phillips, S. K.

AU - Pitt, M. L.

AU - Radloff, R. W.

AU - Rajotte, J. F.

AU - Ramsay, W. D.

AU - Roche, J.

AU - Sawatzky, B.

AU - Seva, T.

AU - Shabestari, M. H.

AU - Silwal, R.

AU - Simicevic, N.

AU - Smith, G. R.

AU - Solvignon, P.

AU - Spayde, D. T.

AU - Subedi, A.

AU - Subedi, R.

AU - Suleiman, R.

AU - Tadevosyan, V.

AU - Tobias, W. A.

AU - Tvaskis, V.

AU - Waidyawansa, B.

AU - Wang, P.

AU - Wells, S. P.

AU - Wood, S. A.

AU - Zang, P.

AU - Zhamkochyan, S.

PY - 2021/7/1

Y1 - 2021/7/1

N2 - We report measurements of the parity-conserving beam-normal single-spin elastic scattering asymmetries Bn on C12 and Al27, obtained with an electron beam polarized transverse to its momentum direction. These measurements add an additional kinematic point to a series of previous measurements of Bn on C12 and provide a first measurement on Al27. The experiment utilized the Qweak apparatus at Jefferson Lab with a beam energy of 1.158 GeV. The average laboratory scattering angle for both targets was 7.7∘, and the average Q2 for both targets was 0.024 37 GeV2 (Q=0.1561 GeV). The asymmetries are Bn=-10.68±0.90(stat)±0.57(syst) ppm for C12 and Bn=-12.16±0.58(stat)±0.62(syst) ppm for Al27. The results are consistent with theoretical predictions, and are compared to existing data. When scaled by Z/A, the Q dependence of all the far-forward angle (θ<10∘) data from H1 to Al27 can be described by the same slope out to Q≈0.35 GeV. Larger-angle data from other experiments in the same Q range are consistent with a slope about twice as steep.

AB - We report measurements of the parity-conserving beam-normal single-spin elastic scattering asymmetries Bn on C12 and Al27, obtained with an electron beam polarized transverse to its momentum direction. These measurements add an additional kinematic point to a series of previous measurements of Bn on C12 and provide a first measurement on Al27. The experiment utilized the Qweak apparatus at Jefferson Lab with a beam energy of 1.158 GeV. The average laboratory scattering angle for both targets was 7.7∘, and the average Q2 for both targets was 0.024 37 GeV2 (Q=0.1561 GeV). The asymmetries are Bn=-10.68±0.90(stat)±0.57(syst) ppm for C12 and Bn=-12.16±0.58(stat)±0.62(syst) ppm for Al27. The results are consistent with theoretical predictions, and are compared to existing data. When scaled by Z/A, the Q dependence of all the far-forward angle (θ<10∘) data from H1 to Al27 can be described by the same slope out to Q≈0.35 GeV. Larger-angle data from other experiments in the same Q range are consistent with a slope about twice as steep.

U2 - 10.1103/PhysRevC.104.014606

DO - 10.1103/PhysRevC.104.014606

M3 - Article

AN - SCOPUS:85109311583

SN - 2469-9985

VL - 104

JO - Physical Review C

JF - Physical Review C

IS - 1

M1 - 014606

ER -

Measurement of the beam-normal single-spin asymmetry for elastic electron scattering from C 12 and Al 27

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