Neutron spin structure from polarized deuteron DIS with proton tagging
Polarized electron-deuteron deep-inelastic scattering (DIS) with detection of the spectator proton (“tagged DIS”) enables measurements of neutron spin structure with maximal control of nuclear effects. We calculate the longitudinal spin asymmetries in polarized tagged DIS using methods of light-fron...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-12-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269319307579 |
| _version_ | 1818039797367701504 |
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| author | W. Cosyn C. Weiss |
| author_facet | W. Cosyn C. Weiss |
| author_sort | W. Cosyn |
| collection | DOAJ |
| description | Polarized electron-deuteron deep-inelastic scattering (DIS) with detection of the spectator proton (“tagged DIS”) enables measurements of neutron spin structure with maximal control of nuclear effects. We calculate the longitudinal spin asymmetries in polarized tagged DIS using methods of light-front nuclear structure and study their dependence on the measured proton momentum. Asymmetries can be formed with all three deuteron spin states (±1,0) or the two maximum-spin states only (±1, involving tensor polarization). The proton momentum dependence can be used to select pure S-wave configurations in the deuteron and eliminate D-wave depolarization (transverse momenta ppT≲ 100 MeV). Free neutron spin structure can be extracted model-independently through pole extrapolation of the tagged asymmetries. Such measurements could be performed at a future electron-ion collider (EIC) with polarized deuteron beams and forward proton detectors. Keywords: Polarized deep-inelastic scattering, Neutron, Nuclear fragmentation, Electron-ion collider, Light-front quantization |
| first_indexed | 2024-12-10T08:04:20Z |
| format | Article |
| id | doaj.art-8c9dc0b4e370415bbd005fab699fd79f |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-10T08:04:20Z |
| publishDate | 2019-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-8c9dc0b4e370415bbd005fab699fd79f2022-12-22T01:56:43ZengElsevierPhysics Letters B0370-26932019-12-01799Neutron spin structure from polarized deuteron DIS with proton taggingW. Cosyn0C. Weiss1Department of Physics and Astronomy, Ghent University, Proeftuinstraat 86, B9000 Ghent, Belgium; Corresponding author.Theory Center, Jefferson Lab, Newport News, VA 23606, USAPolarized electron-deuteron deep-inelastic scattering (DIS) with detection of the spectator proton (“tagged DIS”) enables measurements of neutron spin structure with maximal control of nuclear effects. We calculate the longitudinal spin asymmetries in polarized tagged DIS using methods of light-front nuclear structure and study their dependence on the measured proton momentum. Asymmetries can be formed with all three deuteron spin states (±1,0) or the two maximum-spin states only (±1, involving tensor polarization). The proton momentum dependence can be used to select pure S-wave configurations in the deuteron and eliminate D-wave depolarization (transverse momenta ppT≲ 100 MeV). Free neutron spin structure can be extracted model-independently through pole extrapolation of the tagged asymmetries. Such measurements could be performed at a future electron-ion collider (EIC) with polarized deuteron beams and forward proton detectors. Keywords: Polarized deep-inelastic scattering, Neutron, Nuclear fragmentation, Electron-ion collider, Light-front quantizationhttp://www.sciencedirect.com/science/article/pii/S0370269319307579 |
| spellingShingle | W. Cosyn C. Weiss Neutron spin structure from polarized deuteron DIS with proton tagging Physics Letters B |
| title | Neutron spin structure from polarized deuteron DIS with proton tagging |
| title_full | Neutron spin structure from polarized deuteron DIS with proton tagging |
| title_fullStr | Neutron spin structure from polarized deuteron DIS with proton tagging |
| title_full_unstemmed | Neutron spin structure from polarized deuteron DIS with proton tagging |
| title_short | Neutron spin structure from polarized deuteron DIS with proton tagging |
| title_sort | neutron spin structure from polarized deuteron dis with proton tagging |
| url | http://www.sciencedirect.com/science/article/pii/S0370269319307579 |
| work_keys_str_mv | AT wcosyn neutronspinstructurefrompolarizeddeuterondiswithprotontagging AT cweiss neutronspinstructurefrompolarizeddeuterondiswithprotontagging |