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Title: New Precision Limit on the Strange Vector Form Factors of the Proton

Abstract

The parity-violating cross-section asymmetry in the elastic scattering of polarized electrons from unpolarized protons has been measured at a four-momentum transfer squared Q2 = 0.624 GeV2 and beam energy Eb = 3.48 GeV to be APV = -23.80 ± 0.78 (stat) ± 0.36 (syst) parts per million. This result is consistent with zero contribution of strange quarks to the combination of electric and magnetic form factors GEs + 0.517 GMs = 0.003 ± 0.010 (stat) ± 0.004 (syst) ± 0.009 (ff), where the third error is due to the limits of precision on the electromagnetic form factors and radiative corrections. With this measurement, the world data on strange contributions to nucleon form factors are seen to be consistent with zero and not more than a few percent of the proton form factors.

Authors:
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Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
HAPPEX Collaboration
OSTI Identifier:
1038243
Alternate Identifier(s):
OSTI ID: 1099297
Report Number(s):
JLAB-PHY-11-1479; DOE/OR/23177-2044; arXiv:1107.0913
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US1201830
Grant/Contract Number:  
AC05-06OR23177
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 108; Journal Issue: 10; 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; ACCURACY; ASYMMETRY; ELASTIC SCATTERING; ELECTROMAGNETIC FORM FACTORS; ELECTRONS; FORM FACTORS; NUCLEONS; PROTONS; QUARKS; RADIATIVE CORRECTIONS; VECTORS

Citation Formats

Ahmed, Z., Allada, K., Aniol, K. A., Armstrong, D. S., Arrington, J., Baturin, P., Bellini, V., Benesch, J., Beminiwattha, R., Benmokhtar, F., Canan, M., Camsonne, A., Cates, G. D., Chen, J. -P., Chudakov, E., Cisbani, E., Dalton, M. M., de Jager, C. W., De Leo, R., Deconinck, W., Decowski, P., Deng, X., Deur, A., Dutta, C., Franklin, G. B., Friend, M., Frullani, S., Garibaldi, F., Giusa, A., Glamazdin, A., Golge, S., Grimm, K., Hansen, O., Higinbotham, D. W., Holmes, R., Holmstrom, T., Huang, J., Huang, M., Hyde, C. E., Jen, C. M., Jin, G., Jones, D., Kang, H., King, P., Kowalski, S., Kumar, K. S., Lee, J. H., LeRose, J. J., Liyanage, N., Long, E., McNulty, D., Margaziotis, D., Meddi, F., Meekins, D. G., Mercado, L., Meziani, Z. -E., Michaels, R., Muñoz-Camacho, C., Mihovilovic, M., Muangma, N., Myers, K. E., Nanda, S., Narayan, A., Nelyubin, V., Nuruzzaman, None, Oh, Y., Pan, K., Parno, D., Paschke, K. D., Phillips, S. K., Qian, X., Qiang, Y., Quinn, B., Rakhman, A., Reimer, P. E., Rider, K., Riordan, S., Roche, J., Rubin, J., Russo, G., Saenboonruang, K., Saha, A., Sawatzky, B., Silwal, R., Sirca, S., Souder, P. A., Sperduto, M., Subedi, R., Suleiman, R., Sulkosky, V., Sutera, C. M., Tobias, W. A., Urciuoli, G. M., Waidyawansa, B., Wang, D., Wexler, J., Wilson, R., Wojtsekhowski, B., Zhan, X., Yan, X., Yao, H., Ye, L., Zhao, B., and Zheng, X. New Precision Limit on the Strange Vector Form Factors of the Proton. United States: N. p., 2012. Web. doi:10.1103/PhysRevLett.108.102001.
Ahmed, Z., Allada, K., Aniol, K. A., Armstrong, D. S., Arrington, J., Baturin, P., Bellini, V., Benesch, J., Beminiwattha, R., Benmokhtar, F., Canan, M., Camsonne, A., Cates, G. D., Chen, J. -P., Chudakov, E., Cisbani, E., Dalton, M. M., de Jager, C. W., De Leo, R., Deconinck, W., Decowski, P., Deng, X., Deur, A., Dutta, C., Franklin, G. B., Friend, M., Frullani, S., Garibaldi, F., Giusa, A., Glamazdin, A., Golge, S., Grimm, K., Hansen, O., Higinbotham, D. W., Holmes, R., Holmstrom, T., Huang, J., Huang, M., Hyde, C. E., Jen, C. M., Jin, G., Jones, D., Kang, H., King, P., Kowalski, S., Kumar, K. S., Lee, J. H., LeRose, J. J., Liyanage, N., Long, E., McNulty, D., Margaziotis, D., Meddi, F., Meekins, D. G., Mercado, L., Meziani, Z. -E., Michaels, R., Muñoz-Camacho, C., Mihovilovic, M., Muangma, N., Myers, K. E., Nanda, S., Narayan, A., Nelyubin, V., Nuruzzaman, None, Oh, Y., Pan, K., Parno, D., Paschke, K. D., Phillips, S. K., Qian, X., Qiang, Y., Quinn, B., Rakhman, A., Reimer, P. E., Rider, K., Riordan, S., Roche, J., Rubin, J., Russo, G., Saenboonruang, K., Saha, A., Sawatzky, B., Silwal, R., Sirca, S., Souder, P. A., Sperduto, M., Subedi, R., Suleiman, R., Sulkosky, V., Sutera, C. M., Tobias, W. A., Urciuoli, G. M., Waidyawansa, B., Wang, D., Wexler, J., Wilson, R., Wojtsekhowski, B., Zhan, X., Yan, X., Yao, H., Ye, L., Zhao, B., & Zheng, X. New Precision Limit on the Strange Vector Form Factors of the Proton. United States. https://doi.org/10.1103/PhysRevLett.108.102001
Ahmed, Z., Allada, K., Aniol, K. A., Armstrong, D. S., Arrington, J., Baturin, P., Bellini, V., Benesch, J., Beminiwattha, R., Benmokhtar, F., Canan, M., Camsonne, A., Cates, G. D., Chen, J. -P., Chudakov, E., Cisbani, E., Dalton, M. M., de Jager, C. W., De Leo, R., Deconinck, W., Decowski, P., Deng, X., Deur, A., Dutta, C., Franklin, G. B., Friend, M., Frullani, S., Garibaldi, F., Giusa, A., Glamazdin, A., Golge, S., Grimm, K., Hansen, O., Higinbotham, D. W., Holmes, R., Holmstrom, T., Huang, J., Huang, M., Hyde, C. E., Jen, C. M., Jin, G., Jones, D., Kang, H., King, P., Kowalski, S., Kumar, K. S., Lee, J. H., LeRose, J. J., Liyanage, N., Long, E., McNulty, D., Margaziotis, D., Meddi, F., Meekins, D. G., Mercado, L., Meziani, Z. -E., Michaels, R., Muñoz-Camacho, C., Mihovilovic, M., Muangma, N., Myers, K. E., Nanda, S., Narayan, A., Nelyubin, V., Nuruzzaman, None, Oh, Y., Pan, K., Parno, D., Paschke, K. D., Phillips, S. K., Qian, X., Qiang, Y., Quinn, B., Rakhman, A., Reimer, P. E., Rider, K., Riordan, S., Roche, J., Rubin, J., Russo, G., Saenboonruang, K., Saha, A., Sawatzky, B., Silwal, R., Sirca, S., Souder, P. A., Sperduto, M., Subedi, R., Suleiman, R., Sulkosky, V., Sutera, C. M., Tobias, W. A., Urciuoli, G. M., Waidyawansa, B., Wang, D., Wexler, J., Wilson, R., Wojtsekhowski, B., Zhan, X., Yan, X., Yao, H., Ye, L., Zhao, B., and Zheng, X. Thu . "New Precision Limit on the Strange Vector Form Factors of the Proton". United States. https://doi.org/10.1103/PhysRevLett.108.102001. https://www.osti.gov/servlets/purl/1038243.
@article{osti_1038243,
title = {New Precision Limit on the Strange Vector Form Factors of the Proton},
author = {Ahmed, Z. and Allada, K. and Aniol, K. A. and Armstrong, D. S. and Arrington, J. and Baturin, P. and Bellini, V. and Benesch, J. and Beminiwattha, R. and Benmokhtar, F. and Canan, M. and Camsonne, A. and Cates, G. D. and Chen, J. -P. and Chudakov, E. and Cisbani, E. and Dalton, M. M. and de Jager, C. W. and De Leo, R. and Deconinck, W. and Decowski, P. and Deng, X. and Deur, A. and Dutta, C. and Franklin, G. B. and Friend, M. and Frullani, S. and Garibaldi, F. and Giusa, A. and Glamazdin, A. and Golge, S. and Grimm, K. and Hansen, O. and Higinbotham, D. W. and Holmes, R. and Holmstrom, T. and Huang, J. and Huang, M. and Hyde, C. E. and Jen, C. M. and Jin, G. and Jones, D. and Kang, H. and King, P. and Kowalski, S. and Kumar, K. S. and Lee, J. H. and LeRose, J. J. and Liyanage, N. and Long, E. and McNulty, D. and Margaziotis, D. and Meddi, F. and Meekins, D. G. and Mercado, L. and Meziani, Z. -E. and Michaels, R. and Muñoz-Camacho, C. and Mihovilovic, M. and Muangma, N. and Myers, K. E. and Nanda, S. and Narayan, A. and Nelyubin, V. and Nuruzzaman, None and Oh, Y. and Pan, K. and Parno, D. and Paschke, K. D. and Phillips, S. K. and Qian, X. and Qiang, Y. and Quinn, B. and Rakhman, A. and Reimer, P. E. and Rider, K. and Riordan, S. and Roche, J. and Rubin, J. and Russo, G. and Saenboonruang, K. and Saha, A. and Sawatzky, B. and Silwal, R. and Sirca, S. and Souder, P. A. and Sperduto, M. and Subedi, R. and Suleiman, R. and Sulkosky, V. and Sutera, C. M. and Tobias, W. A. and Urciuoli, G. M. and Waidyawansa, B. and Wang, D. and Wexler, J. and Wilson, R. and Wojtsekhowski, B. and Zhan, X. and Yan, X. and Yao, H. and Ye, L. and Zhao, B. and Zheng, X.},
abstractNote = {The parity-violating cross-section asymmetry in the elastic scattering of polarized electrons from unpolarized protons has been measured at a four-momentum transfer squared Q2 = 0.624 GeV2 and beam energy Eb = 3.48 GeV to be APV = -23.80 ± 0.78 (stat) ± 0.36 (syst) parts per million. This result is consistent with zero contribution of strange quarks to the combination of electric and magnetic form factors GEs + 0.517 GMs = 0.003 ± 0.010 (stat) ± 0.004 (syst) ± 0.009 (ff), where the third error is due to the limits of precision on the electromagnetic form factors and radiative corrections. With this measurement, the world data on strange contributions to nucleon form factors are seen to be consistent with zero and not more than a few percent of the proton form factors.},
doi = {10.1103/PhysRevLett.108.102001},
journal = {Physical Review Letters},
number = 10,
volume = 108,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2012},
month = {Thu Mar 01 00:00:00 EST 2012}
}

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