Target normal single-spin asymmetry in inclusive electron-nucleon scattering with two-photon exchange: Analysis using 1/Nc expansion
We calculate the target normal single-spin asymmetry caused by two-photon exchange in inclusive electron-nucleon scattering in the resonance region. Our analysis uses the 1/Nc expansion of low-energy QCD and combines N and Δ intermediate and final states using the contracted SU(4) spin-flavor symmet...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-12-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269322007146 |
| _version_ | 1811320224713015296 |
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| author | J.L. Goity C. Weiss C.T. Willemyns |
| author_facet | J.L. Goity C. Weiss C.T. Willemyns |
| author_sort | J.L. Goity |
| collection | DOAJ |
| description | We calculate the target normal single-spin asymmetry caused by two-photon exchange in inclusive electron-nucleon scattering in the resonance region. Our analysis uses the 1/Nc expansion of low-energy QCD and combines N and Δ intermediate and final states using the contracted SU(4) spin-flavor symmetry. The normal spin asymmetry obtained in leading-order accuracy in 1/Nc has magnitude ∼10−2 and different sign in ep and en scattering. It can be measured in electron scattering at lab energies ∼0.5–1.5 GeV and provides a clean probe of two-photon exchange dynamics. |
| first_indexed | 2024-04-13T12:56:15Z |
| format | Article |
| id | doaj.art-fac344ba03194131bea9cc338d78dead |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-13T12:56:15Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-fac344ba03194131bea9cc338d78dead2022-12-22T02:46:03ZengElsevierPhysics Letters B0370-26932022-12-01835137580Target normal single-spin asymmetry in inclusive electron-nucleon scattering with two-photon exchange: Analysis using 1/Nc expansionJ.L. Goity0C. Weiss1C.T. Willemyns2Department of Physics, Hampton University, Hampton, VA 23668, USA; Theory Center, Jefferson Lab, Newport News, VA 23606, USATheory Center, Jefferson Lab, Newport News, VA 23606, USA; Corresponding author.Service de Physique Nucléaire et Subnucléaire, Université de Mons, UMONS Research Institute for Complex Systems, Place du Parc 20, 7000 Mons, BelgiumWe calculate the target normal single-spin asymmetry caused by two-photon exchange in inclusive electron-nucleon scattering in the resonance region. Our analysis uses the 1/Nc expansion of low-energy QCD and combines N and Δ intermediate and final states using the contracted SU(4) spin-flavor symmetry. The normal spin asymmetry obtained in leading-order accuracy in 1/Nc has magnitude ∼10−2 and different sign in ep and en scattering. It can be measured in electron scattering at lab energies ∼0.5–1.5 GeV and provides a clean probe of two-photon exchange dynamics.http://www.sciencedirect.com/science/article/pii/S0370269322007146 |
| spellingShingle | J.L. Goity C. Weiss C.T. Willemyns Target normal single-spin asymmetry in inclusive electron-nucleon scattering with two-photon exchange: Analysis using 1/Nc expansion Physics Letters B |
| title | Target normal single-spin asymmetry in inclusive electron-nucleon scattering with two-photon exchange: Analysis using 1/Nc expansion |
| title_full | Target normal single-spin asymmetry in inclusive electron-nucleon scattering with two-photon exchange: Analysis using 1/Nc expansion |
| title_fullStr | Target normal single-spin asymmetry in inclusive electron-nucleon scattering with two-photon exchange: Analysis using 1/Nc expansion |
| title_full_unstemmed | Target normal single-spin asymmetry in inclusive electron-nucleon scattering with two-photon exchange: Analysis using 1/Nc expansion |
| title_short | Target normal single-spin asymmetry in inclusive electron-nucleon scattering with two-photon exchange: Analysis using 1/Nc expansion |
| title_sort | target normal single spin asymmetry in inclusive electron nucleon scattering with two photon exchange analysis using 1 nc expansion |
| url | http://www.sciencedirect.com/science/article/pii/S0370269322007146 |
| work_keys_str_mv | AT jlgoity targetnormalsinglespinasymmetryininclusiveelectronnucleonscatteringwithtwophotonexchangeanalysisusing1ncexpansion AT cweiss targetnormalsinglespinasymmetryininclusiveelectronnucleonscatteringwithtwophotonexchangeanalysisusing1ncexpansion AT ctwillemyns targetnormalsinglespinasymmetryininclusiveelectronnucleonscatteringwithtwophotonexchangeanalysisusing1ncexpansion |