Measurement of the target-normal single-spin asymmetry in quasielastic scattering from the reaction
Abstract
We report the first measurement of the target single-spin asymmetry, Ay, in quasi-elastic scattering from the inclusive reaction 3He↑ (e,e') on a 3He gas target polarized normal to the lepton scattering plane. Assuming time-reversal invariance, this asymmetry is strictly zero for one-photon exchange. A non-zero Ay can arise from the interference between the one- and two-photon exchange processes which is sensitive to the details of the sub-structure of the nucleon. An experiment recently completed at Jefferson Lab yielded asymmetries with high statistical precision at Q2= 0.13, 0.46 and 0.97 GeV2. These measurements demonstrate, for the first time, that the 3He asymmetry is clearly non-zero and negative with a statistical significance of (8-10)σ. Using measured proton-to-3He cross-section ratios and the effective polarization approximation, neutron asymmetries of -(1-3)% were obtained. The neutron asymmetry at high Q2 is related to moments of the Generalized Parton Distributions (GPDs). Our measured neutron asymmetry at Q2=0.97 GeV2 agrees well with a prediction based on two-photon exchange using a GPD model and in addition provides a new independent constraint on these distributions.
- Authors:
- more »
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Org.:
- Jefferson Lab Hall A Collaboration
- OSTI Identifier:
- 1224078
- Alternate Identifier(s):
- OSTI ID: 1224147
- Report Number(s):
- JLAB-PHY-15-2021; DOE/OR/23177-3321; arXiv:1502.02636
Journal ID: ISSN 0031-9007; PRLTAO; National Science Foundation of China and UK STFC grants 57071/1, 50727/1.; TRN: US1600790
- Grant/Contract Number:
- AC05-06OR23177
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 115; Journal Issue: 17; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Zhang, Y. -W., Long, E., Mihovilovič, M., Jin, G., Allada, K., Anderson, B., Annand, J. R. M., Averett, T., Ayerbe-Gayoso, C., 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, O., Higinbotham, D. W., Holmstrom, T., Huang, J., Ibrahim, H., de Jager, C. W., Jensen, E., Jiang, X., John, J. St., Jones, M., Kang, H., Katich, J., Khanal, H. P., King, P., Korsch, W., LeRose, J., Lindgren, R., Lu, H. -J., Luo, W., Markowitz, P., Meziane, M., Michaels, R., Moffit, B., Monaghan, P., Muangma, N., Nanda, S., Norum, B. E., Pan, K., Parno, D., Piasetzky, E., Posik, M., Punjabi, V., Puckett, A. J. R., Qian, X., Qiang, Y., Qiu, X., Riordan, S., Ron, G., Saha, A., Sawatzky, B., Schiavilla, R., Schoenrock, B., Shabestari, M., Shahinyan, A., Širca, S., Subedi, R., Sulkosky, V., Tobias, W. A., Tireman, W., Urciuoli, G. M., Wang, D., Wang, K., Wang, Y., Watson, J., Wojtsekhowski, B., Ye, Z., Zhan, X., Zhang, Y., Zheng, X., Zhao, B., and Zhu, L.. Measurement of the target-normal single-spin asymmetry in quasielastic scattering from the reaction He3↑(e,e'). United States: N. p., 2015.
Web. doi:10.1103/PhysRevLett.115.172502.
Zhang, Y. -W., Long, E., Mihovilovič, M., Jin, G., Allada, K., Anderson, B., Annand, J. R. M., Averett, T., Ayerbe-Gayoso, C., 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, O., Higinbotham, D. W., Holmstrom, T., Huang, J., Ibrahim, H., de Jager, C. W., Jensen, E., Jiang, X., John, J. St., Jones, M., Kang, H., Katich, J., Khanal, H. P., King, P., Korsch, W., LeRose, J., Lindgren, R., Lu, H. -J., Luo, W., Markowitz, P., Meziane, M., Michaels, R., Moffit, B., Monaghan, P., Muangma, N., Nanda, S., Norum, B. E., Pan, K., Parno, D., Piasetzky, E., Posik, M., Punjabi, V., Puckett, A. J. R., Qian, X., Qiang, Y., Qiu, X., Riordan, S., Ron, G., Saha, A., Sawatzky, B., Schiavilla, R., Schoenrock, B., Shabestari, M., Shahinyan, A., Širca, S., Subedi, R., Sulkosky, V., Tobias, W. A., Tireman, W., Urciuoli, G. M., Wang, D., Wang, K., Wang, Y., Watson, J., Wojtsekhowski, B., Ye, Z., Zhan, X., Zhang, Y., Zheng, X., Zhao, B., & Zhu, L.. Measurement of the target-normal single-spin asymmetry in quasielastic scattering from the reaction He3↑(e,e'). United States. https://doi.org/10.1103/PhysRevLett.115.172502
Zhang, Y. -W., Long, E., Mihovilovič, M., Jin, G., Allada, K., Anderson, B., Annand, J. R. M., Averett, T., Ayerbe-Gayoso, C., 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, O., Higinbotham, D. W., Holmstrom, T., Huang, J., Ibrahim, H., de Jager, C. W., Jensen, E., Jiang, X., John, J. St., Jones, M., Kang, H., Katich, J., Khanal, H. P., King, P., Korsch, W., LeRose, J., Lindgren, R., Lu, H. -J., Luo, W., Markowitz, P., Meziane, M., Michaels, R., Moffit, B., Monaghan, P., Muangma, N., Nanda, S., Norum, B. E., Pan, K., Parno, D., Piasetzky, E., Posik, M., Punjabi, V., Puckett, A. J. R., Qian, X., Qiang, Y., Qiu, X., Riordan, S., Ron, G., Saha, A., Sawatzky, B., Schiavilla, R., Schoenrock, B., Shabestari, M., Shahinyan, A., Širca, S., Subedi, R., Sulkosky, V., Tobias, W. A., Tireman, W., Urciuoli, G. M., Wang, D., Wang, K., Wang, Y., Watson, J., Wojtsekhowski, B., Ye, Z., Zhan, X., Zhang, Y., Zheng, X., Zhao, B., and Zhu, L.. Thu .
"Measurement of the target-normal single-spin asymmetry in quasielastic scattering from the reaction He3↑(e,e')". United States. https://doi.org/10.1103/PhysRevLett.115.172502. https://www.osti.gov/servlets/purl/1224078.
@article{osti_1224078,
title = {Measurement of the target-normal single-spin asymmetry in quasielastic scattering from the reaction He3↑(e,e')},
author = {Zhang, Y. -W. and Long, E. and Mihovilovič, M. and Jin, G. and Allada, K. and Anderson, B. and Annand, J. R. M. and Averett, T. and Ayerbe-Gayoso, C. and Boeglin, W. and Bradshaw, P. and Camsonne, A. and Canan, M. and Cates, G. D. and Chen, C. and Chen, J. P. and Chudakov, E. and De Leo, R. and Deng, X. and Deur, A. and Dutta, C. and El Fassi, L. and Flay, D. and Frullani, S. and Garibaldi, F. and Gao, H. and Gilad, S. and Gilman, R. and Glamazdin, O. and Golge, S. and Gomez, J. and Hansen, O. and Higinbotham, D. W. and Holmstrom, T. and Huang, J. and Ibrahim, H. and de Jager, C. W. and Jensen, E. and Jiang, X. and John, J. St. and Jones, M. and Kang, H. and Katich, J. and Khanal, H. P. and King, P. and Korsch, W. and LeRose, J. and Lindgren, R. and Lu, H. -J. and Luo, W. and Markowitz, P. and Meziane, M. and Michaels, R. and Moffit, B. and Monaghan, P. and Muangma, N. and Nanda, S. and Norum, B. E. and Pan, K. and Parno, D. and Piasetzky, E. and Posik, M. and Punjabi, V. and Puckett, A. J. R. and Qian, X. and Qiang, Y. and Qiu, X. and Riordan, S. and Ron, G. and Saha, A. and Sawatzky, B. and Schiavilla, R. and Schoenrock, B. and Shabestari, M. and Shahinyan, A. and Širca, S. and Subedi, R. and Sulkosky, V. and Tobias, W. A. and Tireman, W. and Urciuoli, G. M. and Wang, D. and Wang, K. and Wang, Y. and Watson, J. and Wojtsekhowski, B. and Ye, Z. and Zhan, X. and Zhang, Y. and Zheng, X. and Zhao, B. and Zhu, L.},
abstractNote = {We report the first measurement of the target single-spin asymmetry, Ay, in quasi-elastic scattering from the inclusive reaction 3He↑ (e,e') on a 3He gas target polarized normal to the lepton scattering plane. Assuming time-reversal invariance, this asymmetry is strictly zero for one-photon exchange. A non-zero Ay can arise from the interference between the one- and two-photon exchange processes which is sensitive to the details of the sub-structure of the nucleon. An experiment recently completed at Jefferson Lab yielded asymmetries with high statistical precision at Q2= 0.13, 0.46 and 0.97 GeV2. These measurements demonstrate, for the first time, that the 3He asymmetry is clearly non-zero and negative with a statistical significance of (8-10)σ. Using measured proton-to-3He cross-section ratios and the effective polarization approximation, neutron asymmetries of -(1-3)% were obtained. The neutron asymmetry at high Q2 is related to moments of the Generalized Parton Distributions (GPDs). Our measured neutron asymmetry at Q2=0.97 GeV2 agrees well with a prediction based on two-photon exchange using a GPD model and in addition provides a new independent constraint on these distributions.},
doi = {10.1103/PhysRevLett.115.172502},
journal = {Physical Review Letters},
number = 17,
volume = 115,
place = {United States},
year = {Thu Oct 22 00:00:00 EDT 2015},
month = {Thu Oct 22 00:00:00 EDT 2015}
}
Web of Science
Works referenced in this record:
Partonic Calculation of the Two-Photon Exchange Contribution to Elastic Electron-Proton Scattering at Large Momentum Transfer
journal, September 2004
- Chen, Y. -C.; Afanasev, A.; Brodsky, S. J.
- Physical Review Letters, Vol. 93, Issue 12
Measurement of the Target-Normal Single-Spin Asymmetry in Deep-Inelastic Scattering from the Reaction
journal, July 2014
- Katich, J.; Qian, X.; Zhao, Y. X.
- Physical Review Letters, Vol. 113, Issue 2
Search for a two-photon exchange contribution to inclusive deep-inelastic scattering
journal, January 2010
- Airapetian, A.; Akopov, N.; Akopov, Z.
- Physics Letters B, Vol. 682, Issue 4-5
How well do we know the electromagnetic form factors of the proton?
journal, September 2003
- Arrington, J.
- Physical Review C, Vol. 68, Issue 3
Review of two-photon exchange in electron scattering
journal, October 2011
- Arrington, J.; Blunden, P. G.; Melnitchouk, W.
- Progress in Particle and Nuclear Physics, Vol. 66, Issue 4
Final analysis of proton form factor ratio data at , 4.8, and 5.6 GeV
journal, April 2012
- Puckett, A. J. R.; Brash, E. J.; Gayou, O.
- Physical Review C, Vol. 85, Issue 4
Two-Photon Exchange and Elastic Electron-Proton Scattering
journal, October 2003
- Blunden, P. G.; Melnitchouk, W.; Tjon, J. A.
- Physical Review Letters, Vol. 91, Issue 14
Two-Photon Physics in Hadronic Processes
journal, November 2007
- Carlson, Carl E.; Vanderhaeghen, Marc
- Annual Review of Nuclear and Particle Science, Vol. 57, Issue 1
Possible Tests of and Invariances in and
journal, March 1966
- Christ, N.; Lee, T. D.
- Physical Review, Vol. 143, Issue 4
Up-Down Asymmetry in Inelastic Electron—Polarized-Proton Scattering
journal, September 1970
- Cahn, Robert N.; Tsai, Y. S.
- Physical Review D, Vol. 2, Issue 5
Transverse target spin asymmetry in inclusive DIS with two-photon exchange
journal, January 2008
- Afanasev, A.; Strikman, M.; Weiss, C.
- Physical Review D, Vol. 77, Issue 1
Resonance estimates for single spin asymmetries in elastic electron-nucleon scattering
journal, October 2004
- Pasquini, B.; Vanderhaeghen, M.
- Physical Review C, Vol. 70, Issue 4
Measurement of the Polarization in Elastic Electron-Proton Scattering
journal, March 1970
- Powell, Thomas; Borghini, Michel; Chamberlain, Owen
- Physical Review Letters, Vol. 24, Issue 13
Development of high-performance alkali-hybrid polarized targets for electron scattering
journal, May 2015
- Singh, Jaideep T.; Dolph, P. A. M.; Tobias, W. A.
- Physical Review C, Vol. 91, Issue 5
Accurate polarimetry using the Rb Zeeman frequency shift due to the spin-exchange collisions
journal, October 1998
- Romalis, M. V.; Cates, G. D.
- Physical Review A, Vol. 58, Issue 4
Basic instrumentation for Hall A at Jefferson Lab
journal, April 2004
- Alcorn, J.; Anderson, B. D.; Aniol, K. A.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 522, Issue 3
Spin structure of the nucleon—status and recent results
journal, July 2009
- Kuhn, S. E.; Chen, J. -P.; Leader, E.
- Progress in Particle and Nuclear Physics, Vol. 63, Issue 1
Single Spin Asymmetries in Charged Pion Production from Semi-Inclusive Deep Inelastic Scattering on a Transversely Polarized Target at
journal, August 2011
- Qian, X.; Allada, K.; Dutta, C.
- Physical Review Letters, Vol. 107, Issue 7
Complete analysis of spin structure function of
journal, June 2002
- Bissey, F.; Guzey, V.; Strikman, M.
- Physical Review C, Vol. 65, Issue 6
Neutron single spin asymmetries from semi-inclusive deep inelastic scattering off transversely polarized
journal, March 2007
- Scopetta, Sergio
- Physical Review D, Vol. 75, Issue 5
Realistic two-baryon potential coupling two-nucleon and nucleon- -isobar states: Fit and applications to three-nucleon system
journal, August 2003
- Deltuva, A.; Machleidt, R.; Sauer, P. U.
- Physical Review C, Vol. 68, Issue 2
Trinucleon photonuclear reactions with -isobar excitation: Processes below pion-production threshold
journal, March 2004
- Deltuva, A.; Yuan, L. P.; Adam, J.
- Physical Review C, Vol. 69, Issue 3
Three-body electrodisintegration of the three-nucleon bound state with -isobar excitation: Processes below pion-production threshold
journal, September 2004
- Deltuva, A.; Yuan, L. P.; Adam, J.
- Physical Review C, Vol. 70, Issue 3
Momentum-space description of three-nucleon breakup reactions including the Coulomb interaction
journal, November 2005
- Deltuva, A.; Fonseca, A. C.; Sauer, P. U.
- Physical Review C, Vol. 72, Issue 5
Transverse Asymmetry from the Quasielastic Process and the Neutron Magnetic Form Factor
journal, October 2000
- Xu, W.; Dutta, D.; Xiong, F.
- Physical Review Letters, Vol. 85, Issue 14
Simple parametrization of nucleon form factors
journal, December 2004
- Kelly, J. J.
- Physical Review C, Vol. 70, Issue 6
Flavor decomposition of the nucleon electromagnetic form factors
journal, December 2012
- Qattan, I. A.; Arrington, J.
- Physical Review C, Vol. 86, Issue 6
Precision Measurement of the Neutron Spin Asymmetry and Spin-Flavor Decomposition in the Valence Quark Region
journal, January 2004
- Zheng, X.; Aniol, K.; Armstrong, D. S.
- Physical Review Letters, Vol. 92, Issue 1
Search for a two-photon exchange contribution to inclusive deep-inelastic scattering
journal, May 2011
- Rith, Klaus
- Journal of Physics: Conference Series, Vol. 295
Momentum-space description of three-nucleon breakup reactions including the Coulomb interaction
other, January 2005
- Deltuva, A.; Fonseca, A. C.; Sauer, P. U.
- College Park, MD : American Physical Society
Realistic two-baryon potential coupling two-nucleon and nucleon-Δ-isobar states: Fit and applications to three-nucleon system
other, January 2003
- Deltuva, A.; Machleidt, R.; Sauer, P. U.
- College Park, MD : American Physical Society
How well do we know the electromagnetic form factors of the proton?
journal, July 2003
- Arrington, J.
- The European Physical Journal A, Vol. 17, Issue 3
Three-body electrodisintegration of the three-nucleon bound state with Δ-isobar excitation: Processes below pion-production threshold
other, January 2004
- Deltuva, A.; Yuan, L. P.; J., Adam Jr. ,
- College Park, MD : American Physical Society
Transverse target spin asymmetry in inclusive DIS with two-photon exchange
text, January 2007
- Afanasev, A.; Strikman, M.; Weiss, C.
- arXiv
Spin Structure of the Nucleon - Status and Recent Results
text, January 2008
- Kuhn, S. E.; Chen, J. -P.; Leader, E.
- arXiv
Search for a Two-Photon Exchange Contribution to Inclusive Deep-Inelastic Scattering
text, January 2009
- Collaboration, The HERMES; Airapetian, A.
- arXiv
Review of two-photon exchange in electron scattering
text, January 2011
- Arrington, J.; Blunden, P. G.; Melnitchouk, W.
- arXiv
How Well Do We Know the Electromagnetic Form Factors of the Proton?
text, January 2002
- Arrington, J.
- arXiv
Partonic calculation of the two-photon exchange contribution to elastic electron-proton scattering at large momentum transfer
text, January 2004
- Chen, Y. C.; Afanasev, A.; Brodsky, S. J.
- arXiv
Trinucleon photonuclear reactions with $Δ$-isobar excitation: Processes below pion-production threshold
text, January 2003
- Deltuva, A.; Yuan, L. P.; Adam, J.
- arXiv
Three-body electrodisintegration of the three-nucleon bound state with $Δ$-isobar excitation: Processes below pion-production threshold
text, January 2004
- Deltuva, A.; Yuan, L. P.; Adam, J.
- arXiv
Works referencing / citing this record:
The spin structure of the nucleon
journal, June 2019
- Deur, Alexandre; Brodsky, Stanley J.; de Téramond, Guy F.
- Reports on Progress in Physics, Vol. 82, Issue 7
Lepton mass effects for beam-normal single-spin asymmetry in elastic muon-proton scattering
journal, November 2019
- Koshchii, Oleksandr; Afanasev, Andrei
- Physical Review D, Vol. 100, Issue 9
The spin structure of the nucleon
journal, January 2005
- Kabuss, Eva-Maria
- Czechoslovak Journal of Physics, Vol. 55, Issue S1
The spin structure of the nucleon
journal, January 1994
- Bass, S. D.; Thomas, A. W.
- Progress in Particle and Nuclear Physics, Vol. 33
The Spin Structure of the Nucleon: Proceeding of International School of Nucleon Structure: 1st Course
conference, April 2017
- Frois, B.; Hughes, V. W.; de Groot, N.
- International School of Nucleon Structure, The Spin Structure of the Nucleon
Lepton mass effects for beam-normal single-spin asymmetry in elastic muon-proton scattering
text, January 2019
- Koshchii, Oleksandr; Afanasev, Andrei
- arXiv