Extraction of the neutron electric form factor from measurements of inclusive double spin asymmetries
Background: Measurements of the neutron charge form factor, G[superscript n][subscript E], are challenging because the neutron has no net charge. In addition, measurements of the neutron form factors must use nuclear targets which require accurately accounting for nuclear effects. Extracting G[super...
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American Physical Society
2018
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| Online Access: | http://hdl.handle.net/1721.1/114304 https://orcid.org/0000-0003-2713-7800 https://orcid.org/0000-0002-6261-6172 https://orcid.org/0000-0001-7871-4108 https://orcid.org/0000-0001-9930-5063 |
| _version_ | 1811076149886844928 |
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| author | Jin, G. Long, E. Zhang, Y.-W. Mihovilovic, M. Anderson, B. Higinbotham, D. W. Širca, S. Allada, K. Annand, J. R. M. Averett, T. Boeglin, W. Bradshaw, P. Camsonne, A. Canan, M. Cates, G. D. Chen, C. Chen, J.-P. 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, J.-O. Holmstrom, T. Ibrahim, H. de Jager, C. W. Jensen, E. Jiang, X. Jones, M. Kang, H. Katich, J. Khanal, H. P. King, P. Korsch, W. LeRose, J. Lindgren, R. Lu, H.-J. Luo, W. Markowitz, P. Meekins, D. Meziane, M. Michaels, R. Moffit, B. Monaghan, P. Nanda, S. Norum, B. E. Parno, D. Piasetzky, E. Posik, M. Punjabi, V. Qian, X. Qiang, Y. Qui, X. Riordan, S. Saha, A. Sawatzky, B. Shabestari, M. Shahinyan, A. Shoenrock, B. John, J. St. Subedi, R. Tobias, W. A. Tireman, W. Urciuoli, G. M. Wang, D. Wang, K. Wang, Y. Watson, J. Wojtsekhowski, B. Ye, Z. Zhang, Y. Zheng, X. Zhao, B. Zhu, L. Sulkosky, Vincent Bertozzi, William Huang, Jin Muangma, Navaphon Puckett, Andrew James R. Pan, Kai Kelleher, Aidan Zhan, X. |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Jin, G. Long, E. Zhang, Y.-W. Mihovilovic, M. Anderson, B. Higinbotham, D. W. Širca, S. Allada, K. Annand, J. R. M. Averett, T. Boeglin, W. Bradshaw, P. Camsonne, A. Canan, M. Cates, G. D. Chen, C. Chen, J.-P. 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, J.-O. Holmstrom, T. Ibrahim, H. de Jager, C. W. Jensen, E. Jiang, X. Jones, M. Kang, H. Katich, J. Khanal, H. P. King, P. Korsch, W. LeRose, J. Lindgren, R. Lu, H.-J. Luo, W. Markowitz, P. Meekins, D. Meziane, M. Michaels, R. Moffit, B. Monaghan, P. Nanda, S. Norum, B. E. Parno, D. Piasetzky, E. Posik, M. Punjabi, V. Qian, X. Qiang, Y. Qui, X. Riordan, S. Saha, A. Sawatzky, B. Shabestari, M. Shahinyan, A. Shoenrock, B. John, J. St. Subedi, R. Tobias, W. A. Tireman, W. Urciuoli, G. M. Wang, D. Wang, K. Wang, Y. Watson, J. Wojtsekhowski, B. Ye, Z. Zhang, Y. Zheng, X. Zhao, B. Zhu, L. Sulkosky, Vincent Bertozzi, William Huang, Jin Muangma, Navaphon Puckett, Andrew James R. Pan, Kai Kelleher, Aidan Zhan, X. |
| author_sort | Jin, G. |
| collection | MIT |
| description | Background: Measurements of the neutron charge form factor, G[superscript n][subscript E], are challenging because the neutron has no net charge. In addition, measurements of the neutron form factors must use nuclear targets which require accurately accounting for nuclear effects. Extracting G[superscript n][subscript E] with different targets and techniques provides an important test of our handling of these effects.
Purpose: The goal of the measurement was to use an inclusive asymmetry measurement technique to extract the neutron charge form factor at a four-momentum transfer of 1(GeV/c)[superscript 2]. This technique has very different systematic uncertainties than traditional exclusive measurements and thus serves as an independent check of whether nuclear effects have been taken into account correctly.
Method: The inclusive quasielastic reaction [superscript 3][bar over H]e[over ⃗]([bar over e],e′) was measured at Jefferson Laboratory. The neutron electric form factor, G[superscript n][subscript E], was extracted at Q[superscript 2]=0.98(GeV/c)[superscript 2] from ratios of electron-polarization asymmetries measured for two orthogonal target spin orientations. This Q[superscript 2] is high enough that the sensitivity to G[superscript n][subscript E] is not overwhelmed by the neutron magnetic contribution, and yet low enough that explicit neutron detection is not required to suppress pion production.
Results: The neutron electric form factor, G[superscript n][subscript E], was determined to be 0.0414±0.0077(stat)±0.0022(syst), providing the first high-precision inclusive extraction of the neutron's charge form factor.
Conclusions: The use of the inclusive quasielastic [superscript 3][bar over H]e9[bar over e],e′) with a four-momentum transfer near 1(GeV/c)[superscript 2] has been used to provide a unique measurement of G[superscript n][subscript E]. This new result provides a systematically independent validation of the exclusive extraction technique results and implies that the nuclear corrections are understood. This is contrary to the proton form factor where asymmetry and differential cross section measurements have been shown to have large systematic differences. |
| first_indexed | 2024-09-23T10:17:11Z |
| format | Article |
| id | mit-1721.1/114304 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:17:11Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1143042023-02-26T11:15:34Z Extraction of the neutron electric form factor from measurements of inclusive double spin asymmetries Jin, G. Long, E. Zhang, Y.-W. Mihovilovic, M. Anderson, B. Higinbotham, D. W. Širca, S. Allada, K. Annand, J. R. M. Averett, T. Boeglin, W. Bradshaw, P. Camsonne, A. Canan, M. Cates, G. D. Chen, C. Chen, J.-P. 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, J.-O. Holmstrom, T. Ibrahim, H. de Jager, C. W. Jensen, E. Jiang, X. Jones, M. Kang, H. Katich, J. Khanal, H. P. King, P. Korsch, W. LeRose, J. Lindgren, R. Lu, H.-J. Luo, W. Markowitz, P. Meekins, D. Meziane, M. Michaels, R. Moffit, B. Monaghan, P. Nanda, S. Norum, B. E. Parno, D. Piasetzky, E. Posik, M. Punjabi, V. Qian, X. Qiang, Y. Qui, X. Riordan, S. Saha, A. Sawatzky, B. Shabestari, M. Shahinyan, A. Shoenrock, B. John, J. St. Subedi, R. Tobias, W. A. Tireman, W. Urciuoli, G. M. Wang, D. Wang, K. Wang, Y. Watson, J. Wojtsekhowski, B. Ye, Z. Zhang, Y. Zheng, X. Zhao, B. Zhu, L. Sulkosky, Vincent Bertozzi, William Huang, Jin Muangma, Navaphon Puckett, Andrew James R. Pan, Kai Kelleher, Aidan Zhan, X. Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Sulkosky, Vincent Kelleher, Aidan Michael Bertozzi, William Huang, Jin Muangma, Navaphon Puckett, Andrew James R. Zhan, Xiaohui Pan, Kai Background: Measurements of the neutron charge form factor, G[superscript n][subscript E], are challenging because the neutron has no net charge. In addition, measurements of the neutron form factors must use nuclear targets which require accurately accounting for nuclear effects. Extracting G[superscript n][subscript E] with different targets and techniques provides an important test of our handling of these effects. Purpose: The goal of the measurement was to use an inclusive asymmetry measurement technique to extract the neutron charge form factor at a four-momentum transfer of 1(GeV/c)[superscript 2]. This technique has very different systematic uncertainties than traditional exclusive measurements and thus serves as an independent check of whether nuclear effects have been taken into account correctly. Method: The inclusive quasielastic reaction [superscript 3][bar over H]e[over ⃗]([bar over e],e′) was measured at Jefferson Laboratory. The neutron electric form factor, G[superscript n][subscript E], was extracted at Q[superscript 2]=0.98(GeV/c)[superscript 2] from ratios of electron-polarization asymmetries measured for two orthogonal target spin orientations. This Q[superscript 2] is high enough that the sensitivity to G[superscript n][subscript E] is not overwhelmed by the neutron magnetic contribution, and yet low enough that explicit neutron detection is not required to suppress pion production. Results: The neutron electric form factor, G[superscript n][subscript E], was determined to be 0.0414±0.0077(stat)±0.0022(syst), providing the first high-precision inclusive extraction of the neutron's charge form factor. Conclusions: The use of the inclusive quasielastic [superscript 3][bar over H]e9[bar over e],e′) with a four-momentum transfer near 1(GeV/c)[superscript 2] has been used to provide a unique measurement of G[superscript n][subscript E]. This new result provides a systematically independent validation of the exclusive extraction technique results and implies that the nuclear corrections are understood. This is contrary to the proton form factor where asymmetry and differential cross section measurements have been shown to have large systematic differences. 2018-03-27T14:00:29Z 2018-03-27T14:00:29Z 2017-12 2017-06 2018-02-07T20:55:55Z Article http://purl.org/eprint/type/JournalArticle 2469-9985 2469-9993 http://hdl.handle.net/1721.1/114304 Sulkosky, V., et al. “Extraction of the Neutron Electric Form Factor from Measurements of Inclusive Double Spin Asymmetries.” Physical Review C, vol. 96, no. 6, Dec. 2017. © 2017 American Physical Society https://orcid.org/0000-0003-2713-7800 https://orcid.org/0000-0002-6261-6172 https://orcid.org/0000-0001-7871-4108 https://orcid.org/0000-0001-9930-5063 en http://dx.doi.org/10.1103/PhysRevC.96.065206 Physical Review C Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Jin, G. Long, E. Zhang, Y.-W. Mihovilovic, M. Anderson, B. Higinbotham, D. W. Širca, S. Allada, K. Annand, J. R. M. Averett, T. Boeglin, W. Bradshaw, P. Camsonne, A. Canan, M. Cates, G. D. Chen, C. Chen, J.-P. 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, J.-O. Holmstrom, T. Ibrahim, H. de Jager, C. W. Jensen, E. Jiang, X. Jones, M. Kang, H. Katich, J. Khanal, H. P. King, P. Korsch, W. LeRose, J. Lindgren, R. Lu, H.-J. Luo, W. Markowitz, P. Meekins, D. Meziane, M. Michaels, R. Moffit, B. Monaghan, P. Nanda, S. Norum, B. E. Parno, D. Piasetzky, E. Posik, M. Punjabi, V. Qian, X. Qiang, Y. Qui, X. Riordan, S. Saha, A. Sawatzky, B. Shabestari, M. Shahinyan, A. Shoenrock, B. John, J. St. Subedi, R. Tobias, W. A. Tireman, W. Urciuoli, G. M. Wang, D. Wang, K. Wang, Y. Watson, J. Wojtsekhowski, B. Ye, Z. Zhang, Y. Zheng, X. Zhao, B. Zhu, L. Sulkosky, Vincent Bertozzi, William Huang, Jin Muangma, Navaphon Puckett, Andrew James R. Pan, Kai Kelleher, Aidan Zhan, X. Extraction of the neutron electric form factor from measurements of inclusive double spin asymmetries |
| title | Extraction of the neutron electric form factor from measurements of inclusive double spin asymmetries |
| title_full | Extraction of the neutron electric form factor from measurements of inclusive double spin asymmetries |
| title_fullStr | Extraction of the neutron electric form factor from measurements of inclusive double spin asymmetries |
| title_full_unstemmed | Extraction of the neutron electric form factor from measurements of inclusive double spin asymmetries |
| title_short | Extraction of the neutron electric form factor from measurements of inclusive double spin asymmetries |
| title_sort | extraction of the neutron electric form factor from measurements of inclusive double spin asymmetries |
| url | http://hdl.handle.net/1721.1/114304 https://orcid.org/0000-0003-2713-7800 https://orcid.org/0000-0002-6261-6172 https://orcid.org/0000-0001-7871-4108 https://orcid.org/0000-0001-9930-5063 |
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