Measurement of the single-spin asymmetry Ay                             0 in quasi-elastic 3He↑(e,e′n) scattering at 0.4 < Q2 < 1.0 GeV/c2

E. Long; Y. W. Zhang; M. Mihovilovič; G. Jin; V. Sulkosky; A. Kelleher; B. Anderson; D. W. Higinbotham; S. Širca; K. Allada; J. R.M. Annand; T. Averett; W. Bertozzi; W. Boeglin; P. Bradshaw; A. Camsonne; M. Canan; G. D. Cates; C. Chen; J. P. Chen; E. Chudakov; R. De Leo; X. Deng; A. Deur; C. Dutta; L. El Fassi; D. Flay; S. Frullani; F. Garibaldi; H. Gao; S. Gilad; R. Gilman; O. Glamazdin; S. Golge; J. Gomez; J. O. Hansen; T. Holmstrom; J. Huang; H. Ibrahim; C. W. de Jager; E. Jensen; X. Jiang; M. Jones; H. Kang; J. Katich; H. P. Khanal; P. M. King; W. Korsch; J. LeRose; R. Lindgren; H. J. Lu; W. Luo; P. Markowitz; M. Meziane; R. Michaels; B. Moffit; P. Monaghan; N. Muangma; S. Nanda; B. E. Norum; K. Pan; D. Parno; E. Piasetzky; M. Posik; V. Punjabi; A. J.R. Puckett; X. Qian; Y. Qiang; X. Qui; S. Riordan; A. Saha; B. Sawatzky; M. Shabestari; A. Shahinyan; B. Shoenrock; J. St. John; R. Subedi; W. A. Tobias; W. Tireman; G. M. Urciuoli; D. Wang; K. Wang; Y. Wang; J. Watson; B. Wojtsekhowski; Z. Ye; X. Zhan; Y. Zhang; X. Zheng; B. Zhao; L. Zhu

doi:10.1016/j.physletb.2019.134875

Measurement of the single-spin asymmetry A_y ⁰ in quasi-elastic ³He^↑(e,e′n) scattering at 0.4 < Q² < 1.0 GeV/c²

E. Long, Y. W. Zhang, M. Mihovilovič, G. Jin, V. Sulkosky, A. Kelleher, B. Anderson, D. W. Higinbotham, S. Širca, K. Allada, J. R.M. Annand, T. Averett, W. Bertozzi, W. Boeglin, P. Bradshaw, A. Camsonne, M. Canan, G. D. Cates, C. Chen, J. P. ChenE. Chudakov, R. De Leo, X. Deng, A. Deur, C. Dutta, L. El Fassi, D. Flay, S. Frullani, F. Garibaldi, H. Gao, S. Gilad, R. Gilman, O. Glamazdin, S. Golge, J. Gomez, J. O. Hansen, T. Holmstrom, J. Huang, H. Ibrahim, C. W. de Jager, E. Jensen, X. Jiang, M. Jones, H. Kang, J. Katich, H. P. Khanal, P. M. King, W. Korsch, J. LeRose, R. Lindgren, H. J. Lu, W. Luo, P. Markowitz, M. Meziane, R. Michaels, B. Moffit, P. Monaghan, N. Muangma, S. Nanda, B. E. Norum, K. Pan, D. Parno, E. Piasetzky, M. Posik, V. Punjabi, A. J.R. Puckett, X. Qian, Y. Qiang, X. Qui, S. Riordan, A. Saha, B. Sawatzky, M. Shabestari, A. Shahinyan, B. Shoenrock, J. St. John, R. Subedi, W. A. Tobias, W. Tireman, G. M. Urciuoli, D. Wang, K. Wang, Y. Wang, J. Watson, B. Wojtsekhowski, Z. Ye, X. Zhan, Y. Zhang, X. Zheng, B. Zhao, L. Zhu

Physics And Astronomy

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Due to the lack of free neutron targets, studies of the structure of the neutron are typically made by scattering electrons from either ²H or ³He targets. In order to extract useful neutron information from a ³He target, one must understand how the neutron in a ³He system differs from a free neutron by taking into account nuclear effects such as final state interactions and meson exchange currents. The target single spin asymmetry A_y ⁰ is an ideal probe of such effects, as any deviation from zero indicates effects beyond plane wave impulse approximation. New measurements of the target single spin asymmetry A_y ⁰ at Q² of 0.46 and 0.96 (GeV/c)² were made at Jefferson Lab using the quasi-elastic He↑3(e,e^′n) reaction. Our measured asymmetry decreases rapidly, from >20% at Q²=0.46 (GeV/c)² to nearly zero at Q²=0.96 (GeV/c)², demonstrating the fall-off of the reaction mechanism effects as Q² increases. We also observed a small ϵ-dependent increase in A_y ⁰ compared to previous measurements, particularly at moderate Q². This indicates that upcoming high Q² measurements from the Jefferson Lab 12 GeV program can cleanly probe neutron structure from polarized ³He using plane wave impulse approximation.

Original language	English
Article number	134875
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	797
DOIs	https://doi.org/10.1016/j.physletb.2019.134875
State	Published - Oct 10 2019

Bibliographical note

Publisher Copyright:
© 2019 The Authors

Funding

We thank the Jefferson Lab Hall A technical staff and the Jefferson Lab accelerator staff for their outstanding support. This work was supported in part by the National Science Foundation including NSF-0969129 , the U.S. Department of Energy including DE-FG02-96ER41003 , and the UK Science and Technology Facilities Council . Jefferson Science Associates, LLC, operates Jefferson Lab for the U.S. DOE under U.S. DOE contract DE-AC05-06OR23177 . We thank the Jefferson Lab Hall A technical staff and the Jefferson Lab accelerator staff for their outstanding support. This work was supported in part by the National Science Foundation including NSF-0969129, the U.S. Department of Energy including DE-FG02-96ER41003, and the UK Science and Technology Facilities Council. Jefferson Science Associates, LLC, operates Jefferson Lab for the U.S. DOE under U.S. DOE contract DE-AC05-06OR23177.

Funders	Funder number
National Science Foundation including NSF-0969129
U.S. Department of Energy including DE-FG02-96ER41003
National Science Foundation (NSF)	NSF-0969129
Michigan State University-U.S. Department of Energy (MSU-DOE) Plant Research Laboratory	DE-FG02-96ER41003, DE-AC05-06OR23177
Directorate for Mathematical and Physical Sciences	0969129
Science and Technology Facilities Council

Keywords

Electron scattering
He
Neutron
Polarized
Quasi-elastic
Single spin asymmetry

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/j.physletb.2019.134875

Cite this

Long, E., Zhang, Y. W., Mihovilovič, M., Jin, G., Sulkosky, V., Kelleher, A., Anderson, B., Higinbotham, D. W., Širca, S., Allada, K., Annand, J. R. M., Averett, T., Bertozzi, W., Boeglin, W., Bradshaw, P., Camsonne, A., Canan, M., Cates, G. D., Chen, C., ... Zhu, L. (2019). Measurement of the single-spin asymmetry A_y ⁰ in quasi-elastic ³He^↑(e,e′n) scattering at 0.4 < Q² < 1.0 GeV/c² Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 797, Article 134875. https://doi.org/10.1016/j.physletb.2019.134875

@article{ad39137a8e0e4baea26555a0515efa99,

title = "Measurement of the single-spin asymmetry Ay 0 in quasi-elastic 3He↑(e,e′n) scattering at 0.4 < Q2 < 1.0 GeV/c2 ",

abstract = "Due to the lack of free neutron targets, studies of the structure of the neutron are typically made by scattering electrons from either 2H or 3He targets. In order to extract useful neutron information from a 3He target, one must understand how the neutron in a 3He system differs from a free neutron by taking into account nuclear effects such as final state interactions and meson exchange currents. The target single spin asymmetry Ay 0 is an ideal probe of such effects, as any deviation from zero indicates effects beyond plane wave impulse approximation. New measurements of the target single spin asymmetry Ay 0 at Q2 of 0.46 and 0.96 (GeV/c)2 were made at Jefferson Lab using the quasi-elastic He↑3(e,e′n) reaction. Our measured asymmetry decreases rapidly, from >20% at Q2=0.46 (GeV/c)2 to nearly zero at Q2=0.96 (GeV/c)2, demonstrating the fall-off of the reaction mechanism effects as Q2 increases. We also observed a small ϵ-dependent increase in Ay 0 compared to previous measurements, particularly at moderate Q2. This indicates that upcoming high Q2 measurements from the Jefferson Lab 12 GeV program can cleanly probe neutron structure from polarized 3He using plane wave impulse approximation.",

keywords = "Electron scattering, He, Neutron, Polarized, Quasi-elastic, Single spin asymmetry",

author = "E. Long and Zhang, {Y. W.} and M. Mihovilovi{\v c} and G. Jin and V. Sulkosky and A. Kelleher and B. Anderson and Higinbotham, {D. W.} and S. {\v S}irca and K. Allada and Annand, {J. R.M.} and T. Averett and W. Bertozzi and W. Boeglin and P. Bradshaw and A. Camsonne and M. Canan and Cates, {G. D.} and C. Chen and Chen, {J. P.} and E. Chudakov and {De Leo}, R. and X. Deng and A. Deur and C. Dutta and {El Fassi}, L. and D. Flay and S. Frullani and F. Garibaldi and H. Gao and S. Gilad and R. Gilman and O. Glamazdin and S. Golge and J. Gomez and Hansen, {J. O.} and T. Holmstrom and J. Huang and H. Ibrahim and {de Jager}, {C. W.} and E. Jensen and X. Jiang and M. Jones and H. Kang and J. Katich and Khanal, {H. P.} and King, {P. M.} and W. Korsch and J. LeRose and R. Lindgren and Lu, {H. J.} and W. Luo and P. Markowitz and M. Meziane and R. Michaels and B. Moffit and P. Monaghan and N. Muangma and S. Nanda and Norum, {B. E.} and K. Pan and D. Parno and E. Piasetzky and M. Posik and V. Punjabi and Puckett, {A. J.R.} and X. Qian and Y. Qiang and X. Qui and S. Riordan and A. Saha and B. Sawatzky and M. Shabestari and A. Shahinyan and B. Shoenrock and {St. John}, J. and R. Subedi and Tobias, {W. A.} and W. Tireman and Urciuoli, {G. M.} and D. Wang and K. Wang and Y. Wang and J. Watson and B. Wojtsekhowski and Z. Ye and X. Zhan and Y. Zhang and X. Zheng and B. Zhao and L. Zhu",

note = "Publisher Copyright: {\textcopyright} 2019 The Authors",

year = "2019",

month = oct,

day = "10",

doi = "10.1016/j.physletb.2019.134875",

language = "English",

volume = "797",

}

Long, E, Zhang, YW, Mihovilovič, M, Jin, G, Sulkosky, V, Kelleher, A, Anderson, B, Higinbotham, DW, Širca, S, Allada, K, Annand, JRM, Averett, T, Bertozzi, W, Boeglin, W, Bradshaw, P, Camsonne, A, Canan, M, Cates, GD, Chen, C, Chen, JP, Chudakov, E, De Leo, R, Deng, X, Deur, A, Dutta, C, El Fassi, L, Flay, D, Frullani, S, Garibaldi, F, Gao, H, Gilad, S, Gilman, R, Glamazdin, O, Golge, S, Gomez, J, Hansen, JO, Holmstrom, T, Huang, J, Ibrahim, H, de Jager, CW, Jensen, E, Jiang, X, Jones, M, Kang, H, Katich, J, Khanal, HP, King, PM, Korsch, W, LeRose, J, Lindgren, R, Lu, HJ, Luo, W, Markowitz, P, Meziane, M, Michaels, R, Moffit, B, Monaghan, P, Muangma, N, Nanda, S, Norum, BE, Pan, K, Parno, D, Piasetzky, E, Posik, M, Punjabi, V, Puckett, AJR, Qian, X, Qiang, Y, Qui, X, Riordan, S, Saha, A, Sawatzky, B, Shabestari, M, Shahinyan, A, Shoenrock, B, St. John, J, Subedi, R, Tobias, WA, Tireman, W, Urciuoli, GM, Wang, D, Wang, K, Wang, Y, Watson, J, Wojtsekhowski, B, Ye, Z, Zhan, X, Zhang, Y, Zheng, X, Zhao, B & Zhu, L 2019, 'Measurement of the single-spin asymmetry A_y ⁰ in quasi-elastic ³He^↑(e,e′n) scattering at 0.4 < Q² < 1.0 GeV/c² ', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 797, 134875. https://doi.org/10.1016/j.physletb.2019.134875

Measurement of the single-spin asymmetry A_y ⁰ in quasi-elastic ³He^↑(e,e′n) scattering at 0.4 < Q² < 1.0 GeV/c² . / Long, E.; Zhang, Y. W.; Mihovilovič, M. et al.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 797, 134875, 10.10.2019.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Measurement of the single-spin asymmetry Ay 0 in quasi-elastic 3He↑(e,e′n) scattering at 0.4 < Q2 < 1.0 GeV/c2

AU - Long, E.

AU - Zhang, Y. W.

AU - Mihovilovič, M.

AU - Jin, G.

AU - Sulkosky, V.

AU - Kelleher, A.

AU - Anderson, B.

AU - Higinbotham, D. W.

AU - Širca, S.

AU - Allada, K.

AU - Annand, J. R.M.

AU - Averett, T.

AU - Bertozzi, W.

AU - Boeglin, W.

AU - Bradshaw, P.

AU - Camsonne, A.

AU - Canan, M.

AU - Cates, G. D.

AU - Chen, C.

AU - Chen, J. P.

AU - Chudakov, E.

AU - De Leo, R.

AU - Deng, X.

AU - Deur, A.

AU - Dutta, C.

AU - El Fassi, L.

AU - Flay, D.

AU - Frullani, S.

AU - Garibaldi, F.

AU - Gao, H.

AU - Gilad, S.

AU - Gilman, R.

AU - Glamazdin, O.

AU - Golge, S.

AU - Gomez, J.

AU - Hansen, J. O.

AU - Holmstrom, T.

AU - Huang, J.

AU - Ibrahim, H.

AU - de Jager, C. W.

AU - Jensen, E.

AU - Jiang, X.

AU - Jones, M.

AU - Kang, H.

AU - Katich, J.

AU - Khanal, H. P.

AU - King, P. M.

AU - Korsch, W.

AU - LeRose, J.

AU - Lindgren, R.

AU - Lu, H. J.

AU - Luo, W.

AU - Markowitz, P.

AU - Meziane, M.

AU - Michaels, R.

AU - Moffit, B.

AU - Monaghan, P.

AU - Muangma, N.

AU - Nanda, S.

AU - Norum, B. E.

AU - Pan, K.

AU - Parno, D.

AU - Piasetzky, E.

AU - Posik, M.

AU - Punjabi, V.

AU - Puckett, A. J.R.

AU - Qian, X.

AU - Qiang, Y.

AU - Qui, X.

AU - Riordan, S.

AU - Saha, A.

AU - Sawatzky, B.

AU - Shabestari, M.

AU - Shahinyan, A.

AU - Shoenrock, B.

AU - St. John, J.

AU - Subedi, R.

AU - Tobias, W. A.

AU - Tireman, W.

AU - Urciuoli, G. M.

AU - Wang, D.

AU - Wang, K.

AU - Wang, Y.

AU - Watson, J.

AU - Wojtsekhowski, B.

AU - Ye, Z.

AU - Zhan, X.

AU - Zhang, Y.

AU - Zheng, X.

AU - Zhao, B.

AU - Zhu, L.

PY - 2019/10/10

Y1 - 2019/10/10

N2 - Due to the lack of free neutron targets, studies of the structure of the neutron are typically made by scattering electrons from either 2H or 3He targets. In order to extract useful neutron information from a 3He target, one must understand how the neutron in a 3He system differs from a free neutron by taking into account nuclear effects such as final state interactions and meson exchange currents. The target single spin asymmetry Ay 0 is an ideal probe of such effects, as any deviation from zero indicates effects beyond plane wave impulse approximation. New measurements of the target single spin asymmetry Ay 0 at Q2 of 0.46 and 0.96 (GeV/c)2 were made at Jefferson Lab using the quasi-elastic He↑3(e,e′n) reaction. Our measured asymmetry decreases rapidly, from >20% at Q2=0.46 (GeV/c)2 to nearly zero at Q2=0.96 (GeV/c)2, demonstrating the fall-off of the reaction mechanism effects as Q2 increases. We also observed a small ϵ-dependent increase in Ay 0 compared to previous measurements, particularly at moderate Q2. This indicates that upcoming high Q2 measurements from the Jefferson Lab 12 GeV program can cleanly probe neutron structure from polarized 3He using plane wave impulse approximation.

AB - Due to the lack of free neutron targets, studies of the structure of the neutron are typically made by scattering electrons from either 2H or 3He targets. In order to extract useful neutron information from a 3He target, one must understand how the neutron in a 3He system differs from a free neutron by taking into account nuclear effects such as final state interactions and meson exchange currents. The target single spin asymmetry Ay 0 is an ideal probe of such effects, as any deviation from zero indicates effects beyond plane wave impulse approximation. New measurements of the target single spin asymmetry Ay 0 at Q2 of 0.46 and 0.96 (GeV/c)2 were made at Jefferson Lab using the quasi-elastic He↑3(e,e′n) reaction. Our measured asymmetry decreases rapidly, from >20% at Q2=0.46 (GeV/c)2 to nearly zero at Q2=0.96 (GeV/c)2, demonstrating the fall-off of the reaction mechanism effects as Q2 increases. We also observed a small ϵ-dependent increase in Ay 0 compared to previous measurements, particularly at moderate Q2. This indicates that upcoming high Q2 measurements from the Jefferson Lab 12 GeV program can cleanly probe neutron structure from polarized 3He using plane wave impulse approximation.

KW - Electron scattering

KW - He

KW - Neutron

KW - Polarized

KW - Quasi-elastic

KW - Single spin asymmetry

UR - http://www.scopus.com/inward/record.url?scp=85071550670&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85071550670&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2019.134875

DO - 10.1016/j.physletb.2019.134875

M3 - Article

AN - SCOPUS:85071550670

SN - 0370-2693

VL - 797

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 134875

ER -

Long E, Zhang YW, Mihovilovič M, Jin G, Sulkosky V, Kelleher A et al. Measurement of the single-spin asymmetry A_y ⁰ in quasi-elastic ³He^↑(e,e′n) scattering at 0.4 < Q² < 1.0 GeV/c² Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2019 Oct 10;797:134875. doi: 10.1016/j.physletb.2019.134875

Measurement of the single-spin asymmetry A_y ⁰ in quasi-elastic ³He^↑(e,e′n) scattering at 0.4 < Q² < 1.0 GeV/c²

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this

Measurement of the single-spin asymmetry Ay 0 in quasi-elastic 3He↑(e,e′n) scattering at 0.4 < Q2 < 1.0 GeV/c2

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this

Measurement of the single-spin asymmetry A_y ⁰ in quasi-elastic ³He^↑(e,e′n) scattering at 0.4 < Q² < 1.0 GeV/c²