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Title: Precise determination of the deuteron spin structure at low to moderate Q 2 with CLAS and extraction of the neutron contribution

Abstract

In this study, we present the final results for the deuteron spin structure functions obtained from the full data set collected with Jefferson Lab's CLAS in 2000-2001. Polarized electrons with energies of 1.6, 2.5, 4.2 and 5.8 GeV were scattered from deuteron ( 15ND 3) targets, dynamically polarized along the beam direction, and detected with CLAS. From the measured double spin asymmetry, the virtual photon absorption asymmetry A d 1 and the polarized structure function g d 1 were extracted over a wide kinematic range (0.05 GeV2 < Q2 < 5 GeV2 and 0.9 GeV < W < 3 GeV). We use an unfolding procedure and a parametrization of the corresponding proton results to extract from these data the polarized structure functions A n 1 and g 1 n of the (bound) neutron, which are so far unknown in the resonance region, W < 2 GeV. We compare our final results, including several moments of the deuteron and neutron spin structure functions, with various theoretical models and expectations as well as parametrizations of the world data. The unprecedented precision and dense kinematic coverage of these data can aid in future extractions of polarized parton distributions, tests of perturbative QCD predictionsmore » for the quark polarization at large x, a better understanding of quark-hadron duality, and more precise values for higher-twist matrix elements in the framework of the Operator Product Expansion.« less

Authors:
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Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Contributing Org.:
CLAS Collaboration
OSTI Identifier:
1224794
Alternate Identifier(s):
OSTI ID: 1224870
Report Number(s):
JLAB-PHY-15-2054; DOE/OR/23177-3359; arXiv:1505.07877
Journal ID: ISSN 0556-2813; PRVCAN
Grant/Contract Number:  
AC05-06OR23177; FG02-96ER40960
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 5; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; spin structure functions; nucleon structure

Citation Formats

Guler, N., Fersch, R. G., Kuhn, S. E., Bosted, P., Griffioen, K. A., Keith, C., Minehart, R., Prok, Y., Adhikari, K. P., Adikaram, D., Amaryan, M. J., Anderson, M. D., Anefalos Pereira, S., Avakian, H., Ball, J., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A., Briscoe, W. J., Brooks, W. K., Bültmann, S., Burkert, V. D., Carman, D. S., Celentano, A., Chandavar, S., Charles, G., Colaneri, L., Cole, P. L., Contalbrigo, M., Crabb, D., Crede, V., D'Angelo, A., Dashyan, N., Deur, A., Djalali, C., Dodge, G. E., Dupre, R., Alaoui, A. El, El Fassi, L., Elouadrhiri, L., Eugenio, P., Fedotov, G., Fegan, S., Filippi, A., Fleming, J. A., Forest, T. A., Garillon, B., Garçon, M., Gevorgyan, N., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Goetz, J. T., Golovatch, E., Gothe, R. W., Guidal, M., Guo, L., Hafidi, K., Hakobyan, H., Harrison, N., Hattawy, M., Hicks, K., Ho, D., Holtrop, M., Hughes, S. M., Hyde, C. E., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jo, H. S., Joo, K., Joosten, S., Keller, D., Khandaker, M., Kim, A., Kim, W., Klein, A., Klein, F. J., Kubarovsky, V., Kuleshov, S. V., Livingston, K., Lu, H. Y., Mayer, M., MacGregor, I. J. D., McKinnon, B., Mirazita, M., Mokeev, V., Montgomery, R. A., Movsisyan, A., Munoz Camacho, C., Nadel-Turonski, P., Net, L. A., Niculescu, I., Osipenko, M., Ostrovidov, A. I., Park, K., Pasyuk, E., Pisano, S., Pogorelko, O., Price, J. W., Procureur, S., Ripani, M., Rizzo, A., Rosner, G., Rossi, P., Roy, P., Sabatié, F., Salgado, C., Schott, D., Schumacher, R. A., Seder, E., Simonyan, A., Skorodumina, Iu., Sokhan, D., Sparveris, N., Strakovsky, I. I., Strauch, S., Sytnik, V., Tian, Ye, Tkachenko, S., Ungaro, M., Voutier, E., Walford, N. K., Wei, X., Weinstein, L. B., Wood, M. H., Zachariou, N., Zana, L., Zhang, J., Zhao, Z. W., and Zonta, I. Precise determination of the deuteron spin structure at low to moderate Q2 with CLAS and extraction of the neutron contribution. United States: N. p., 2015. Web. doi:10.1103/PhysRevC.92.055201.
Guler, N., Fersch, R. G., Kuhn, S. E., Bosted, P., Griffioen, K. A., Keith, C., Minehart, R., Prok, Y., Adhikari, K. P., Adikaram, D., Amaryan, M. J., Anderson, M. D., Anefalos Pereira, S., Avakian, H., Ball, J., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A., Briscoe, W. J., Brooks, W. K., Bültmann, S., Burkert, V. D., Carman, D. S., Celentano, A., Chandavar, S., Charles, G., Colaneri, L., Cole, P. L., Contalbrigo, M., Crabb, D., Crede, V., D'Angelo, A., Dashyan, N., Deur, A., Djalali, C., Dodge, G. E., Dupre, R., Alaoui, A. El, El Fassi, L., Elouadrhiri, L., Eugenio, P., Fedotov, G., Fegan, S., Filippi, A., Fleming, J. A., Forest, T. A., Garillon, B., Garçon, M., Gevorgyan, N., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Goetz, J. T., Golovatch, E., Gothe, R. W., Guidal, M., Guo, L., Hafidi, K., Hakobyan, H., Harrison, N., Hattawy, M., Hicks, K., Ho, D., Holtrop, M., Hughes, S. M., Hyde, C. E., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jo, H. S., Joo, K., Joosten, S., Keller, D., Khandaker, M., Kim, A., Kim, W., Klein, A., Klein, F. J., Kubarovsky, V., Kuleshov, S. V., Livingston, K., Lu, H. Y., Mayer, M., MacGregor, I. J. D., McKinnon, B., Mirazita, M., Mokeev, V., Montgomery, R. A., Movsisyan, A., Munoz Camacho, C., Nadel-Turonski, P., Net, L. A., Niculescu, I., Osipenko, M., Ostrovidov, A. I., Park, K., Pasyuk, E., Pisano, S., Pogorelko, O., Price, J. W., Procureur, S., Ripani, M., Rizzo, A., Rosner, G., Rossi, P., Roy, P., Sabatié, F., Salgado, C., Schott, D., Schumacher, R. A., Seder, E., Simonyan, A., Skorodumina, Iu., Sokhan, D., Sparveris, N., Strakovsky, I. I., Strauch, S., Sytnik, V., Tian, Ye, Tkachenko, S., Ungaro, M., Voutier, E., Walford, N. K., Wei, X., Weinstein, L. B., Wood, M. H., Zachariou, N., Zana, L., Zhang, J., Zhao, Z. W., & Zonta, I. Precise determination of the deuteron spin structure at low to moderate Q2 with CLAS and extraction of the neutron contribution. United States. doi:10.1103/PhysRevC.92.055201.
Guler, N., Fersch, R. G., Kuhn, S. E., Bosted, P., Griffioen, K. A., Keith, C., Minehart, R., Prok, Y., Adhikari, K. P., Adikaram, D., Amaryan, M. J., Anderson, M. D., Anefalos Pereira, S., Avakian, H., Ball, J., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A., Briscoe, W. J., Brooks, W. K., Bültmann, S., Burkert, V. D., Carman, D. S., Celentano, A., Chandavar, S., Charles, G., Colaneri, L., Cole, P. L., Contalbrigo, M., Crabb, D., Crede, V., D'Angelo, A., Dashyan, N., Deur, A., Djalali, C., Dodge, G. E., Dupre, R., Alaoui, A. El, El Fassi, L., Elouadrhiri, L., Eugenio, P., Fedotov, G., Fegan, S., Filippi, A., Fleming, J. A., Forest, T. A., Garillon, B., Garçon, M., Gevorgyan, N., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Goetz, J. T., Golovatch, E., Gothe, R. W., Guidal, M., Guo, L., Hafidi, K., Hakobyan, H., Harrison, N., Hattawy, M., Hicks, K., Ho, D., Holtrop, M., Hughes, S. M., Hyde, C. E., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jo, H. S., Joo, K., Joosten, S., Keller, D., Khandaker, M., Kim, A., Kim, W., Klein, A., Klein, F. J., Kubarovsky, V., Kuleshov, S. V., Livingston, K., Lu, H. Y., Mayer, M., MacGregor, I. J. D., McKinnon, B., Mirazita, M., Mokeev, V., Montgomery, R. A., Movsisyan, A., Munoz Camacho, C., Nadel-Turonski, P., Net, L. A., Niculescu, I., Osipenko, M., Ostrovidov, A. I., Park, K., Pasyuk, E., Pisano, S., Pogorelko, O., Price, J. W., Procureur, S., Ripani, M., Rizzo, A., Rosner, G., Rossi, P., Roy, P., Sabatié, F., Salgado, C., Schott, D., Schumacher, R. A., Seder, E., Simonyan, A., Skorodumina, Iu., Sokhan, D., Sparveris, N., Strakovsky, I. I., Strauch, S., Sytnik, V., Tian, Ye, Tkachenko, S., Ungaro, M., Voutier, E., Walford, N. K., Wei, X., Weinstein, L. B., Wood, M. H., Zachariou, N., Zana, L., Zhang, J., Zhao, Z. W., and Zonta, I. Mon . "Precise determination of the deuteron spin structure at low to moderate Q2 with CLAS and extraction of the neutron contribution". United States. doi:10.1103/PhysRevC.92.055201. https://www.osti.gov/servlets/purl/1224794.
@article{osti_1224794,
title = {Precise determination of the deuteron spin structure at low to moderate Q2 with CLAS and extraction of the neutron contribution},
author = {Guler, N. and Fersch, R. G. and Kuhn, S. E. and Bosted, P. and Griffioen, K. A. and Keith, C. and Minehart, R. and Prok, Y. and Adhikari, K. P. and Adikaram, D. and Amaryan, M. J. and Anderson, M. D. and Anefalos Pereira, S. and Avakian, H. and Ball, J. and Battaglieri, M. and Batourine, V. and Bedlinskiy, I. and Biselli, A. and Briscoe, W. J. and Brooks, W. K. and Bültmann, S. and Burkert, V. D. and Carman, D. S. and Celentano, A. and Chandavar, S. and Charles, G. and Colaneri, L. and Cole, P. L. and Contalbrigo, M. and Crabb, D. and Crede, V. and D'Angelo, A. and Dashyan, N. and Deur, A. and Djalali, C. and Dodge, G. E. and Dupre, R. and Alaoui, A. El and El Fassi, L. and Elouadrhiri, L. and Eugenio, P. and Fedotov, G. and Fegan, S. and Filippi, A. and Fleming, J. A. and Forest, T. A. and Garillon, B. and Garçon, M. and Gevorgyan, N. and Gilfoyle, G. P. and Giovanetti, K. L. and Girod, F. X. and Goetz, J. T. and Golovatch, E. and Gothe, R. W. and Guidal, M. and Guo, L. and Hafidi, K. and Hakobyan, H. and Harrison, N. and Hattawy, M. and Hicks, K. and Ho, D. and Holtrop, M. and Hughes, S. M. and Hyde, C. E. and Ireland, D. G. and Ishkhanov, B. S. and Isupov, E. L. and Jo, H. S. and Joo, K. and Joosten, S. and Keller, D. and Khandaker, M. and Kim, A. and Kim, W. and Klein, A. and Klein, F. J. and Kubarovsky, V. and Kuleshov, S. V. and Livingston, K. and Lu, H. Y. and Mayer, M. and MacGregor, I. J. D. and McKinnon, B. and Mirazita, M. and Mokeev, V. and Montgomery, R. A. and Movsisyan, A. and Munoz Camacho, C. and Nadel-Turonski, P. and Net, L. A. and Niculescu, I. and Osipenko, M. and Ostrovidov, A. I. and Park, K. and Pasyuk, E. and Pisano, S. and Pogorelko, O. and Price, J. W. and Procureur, S. and Ripani, M. and Rizzo, A. and Rosner, G. and Rossi, P. and Roy, P. and Sabatié, F. and Salgado, C. and Schott, D. and Schumacher, R. A. and Seder, E. and Simonyan, A. and Skorodumina, Iu. and Sokhan, D. and Sparveris, N. and Strakovsky, I. I. and Strauch, S. and Sytnik, V. and Tian, Ye and Tkachenko, S. and Ungaro, M. and Voutier, E. and Walford, N. K. and Wei, X. and Weinstein, L. B. and Wood, M. H. and Zachariou, N. and Zana, L. and Zhang, J. and Zhao, Z. W. and Zonta, I.},
abstractNote = {In this study, we present the final results for the deuteron spin structure functions obtained from the full data set collected with Jefferson Lab's CLAS in 2000-2001. Polarized electrons with energies of 1.6, 2.5, 4.2 and 5.8 GeV were scattered from deuteron (15ND3) targets, dynamically polarized along the beam direction, and detected with CLAS. From the measured double spin asymmetry, the virtual photon absorption asymmetry Ad1 and the polarized structure function gd1 were extracted over a wide kinematic range (0.05 GeV2 < Q2 < 5 GeV2 and 0.9 GeV < W < 3 GeV). We use an unfolding procedure and a parametrization of the corresponding proton results to extract from these data the polarized structure functions An1 and g1n of the (bound) neutron, which are so far unknown in the resonance region, W < 2 GeV. We compare our final results, including several moments of the deuteron and neutron spin structure functions, with various theoretical models and expectations as well as parametrizations of the world data. The unprecedented precision and dense kinematic coverage of these data can aid in future extractions of polarized parton distributions, tests of perturbative QCD predictions for the quark polarization at large x, a better understanding of quark-hadron duality, and more precise values for higher-twist matrix elements in the framework of the Operator Product Expansion.},
doi = {10.1103/PhysRevC.92.055201},
journal = {Physical Review. C, Nuclear Physics},
number = 5,
volume = 92,
place = {United States},
year = {2015},
month = {11}
}

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