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Measurement of the nucleon spin structure functions for 0.01<$Q^2$<1 GeV$^2$ using CLAS

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Main Authors:	Deur, A., Kuhn, S. E., Ripani, M., Zheng, X., Acar, A. G., Achenbach, P., Adhikari, K. P., Alvarado, J. S., Amaryan, M. J., Armstrong, W. R., Atac, H., Avakian, H., Baashen, L., Baltzell, N. A., Barion, L., Bashkanov, M., Battaglieri, M., Benkel, B., Benmokhtar, F., Bianconi, A., Biselli, A. S., Booth, W. A., ossu, F. B, Bosted, P., Boiarinov, S., Brinkmann, K. Th., Briscoe, W. J., Bueltmann, S., Burkert, V. D., Carman, D. S., Chatagnon, P., Chen, J. P., Ciullo, G., Cole, P. L., Contalbrigo, M., Crede, V., D'Angelo, A., Dashyan, N., De Vita, R., Defurne, M., Diehl, S., Djalali, C., Drozdov, V. A., Dupre, R., Egiyan, H., Alaoui, A. El, Fassi, L. El, Elouadrhiri, L., Eugenio, P., Faggert, J. C., Fegan, S., Fersch, R., Filippi, A., Gates, K., Gavalian, G., Gilfoyle, G. P., Gothe, R. W., Guo, L., Hakobyan, H., Hattawy, M., Hauenstein, F., Heddle, D., Hobart, A., Holtrop, M., Ireland, D. G., Isupov, E. L., Jiang, H., Jo, H. S., Joosten, S., Kang, H., Keith, C., Khandaker, M., Kim, W., Klein, F. J., Klimenko, V., Konczykowski, P., Kovacs, K., Kripko, A., Kubarovsky, V., Lanza, L., Lee, S., Lenisa, P., Li, X., Long, E., MacGregor, I. J. D., Marchand, D., Mascagna, V., Matamoros, D., McKinnon, B., Meekins, D., Migliorati, S., Mineeva, T., Mirazita, M., Mokeev, V., Munoz-Camacho, C., Nadel-Turonski, P., Nagorna, T., Neupane, K., Niccolai, S., Osipenko, M., Ostrovidov, A. I., Pandey, P., Paolone, M., Pappalardo, L. L., Paremuzyan, R., Pasyuk, E., Paul, S. J., Phelps, W., Phillips, S. K., Pierce, J., Pilleux, N., Pokhrel, M., Price, J. W., Prok, Y., Radic, A., Reed, T., Richards, J., Rosner, G., Rossi, P., Rusova, A. A., Salgado, C., Schmidt, A., Schumacher, R. A., Sharabian, Y. G., Shirokov, E. V., Shrestha, U., Sirca, S., Slifer, K., Sparveris, N., Spreafico, M., Stepanyan, S., Strakovsky, I. I., Strauch, S., Sulkosky, V., Tan, J. A., Tenorio, M., Trotta, N., Tyson, R., Ungaro, M., Upton, D. W., Vallarino, S., Venturelli, L., Voskanyan, H., Voutier, E., Watts, D. P., Wei, X., Wood, M. H., Zachariou, N., Zhang, J., Zurek, M.
Format:	Preprint
Published:	2024
Subjects:	Nuclear Experiment
Online Access:	Acceder al recurso
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author	Deur, A. Kuhn, S. E. Ripani, M. Zheng, X. Acar, A. G. Achenbach, P. Adhikari, K. P. Alvarado, J. S. Amaryan, M. J. Armstrong, W. R. Atac, H. Avakian, H. Baashen, L. Baltzell, N. A. Barion, L. Bashkanov, M. Battaglieri, M. Benkel, B. Benmokhtar, F. Bianconi, A. Biselli, A. S. Booth, W. A. ossu, F. B Bosted, P. Boiarinov, S. Brinkmann, K. Th. Briscoe, W. J. Bueltmann, S. Burkert, V. D. Carman, D. S. Chatagnon, P. Chen, J. P. Ciullo, G. Cole, P. L. Contalbrigo, M. Crede, V. D'Angelo, A. Dashyan, N. De Vita, R. Defurne, M. Diehl, S. Djalali, C. Drozdov, V. A. Dupre, R. Egiyan, H. Alaoui, A. El Fassi, L. El Elouadrhiri, L. Eugenio, P. Faggert, J. C. Fegan, S. Fersch, R. Filippi, A. Gates, K. Gavalian, G. Gilfoyle, G. P. Gothe, R. W. Guo, L. Hakobyan, H. Hattawy, M. Hauenstein, F. Heddle, D. Hobart, A. Holtrop, M. Ireland, D. G. Isupov, E. L. Jiang, H. Jo, H. S. Joosten, S. Kang, H. Keith, C. Khandaker, M. Kim, W. Klein, F. J. Klimenko, V. Konczykowski, P. Kovacs, K. Kripko, A. Kubarovsky, V. Lanza, L. Lee, S. Lenisa, P. Li, X. Long, E. MacGregor, I. J. D. Marchand, D. Mascagna, V. Matamoros, D. McKinnon, B. Meekins, D. Migliorati, S. Mineeva, T. Mirazita, M. Mokeev, V. Munoz-Camacho, C. Nadel-Turonski, P. Nagorna, T. Neupane, K. Niccolai, S. Osipenko, M. Ostrovidov, A. I. Pandey, P. Paolone, M. Pappalardo, L. L. Paremuzyan, R. Pasyuk, E. Paul, S. J. Phelps, W. Phillips, S. K. Pierce, J. Pilleux, N. Pokhrel, M. Price, J. W. Prok, Y. Radic, A. Reed, T. Richards, J. Rosner, G. Rossi, P. Rusova, A. A. Salgado, C. Schmidt, A. Schumacher, R. A. Sharabian, Y. G. Shirokov, E. V. Shrestha, U. Sirca, S. Slifer, K. Sparveris, N. Spreafico, M. Stepanyan, S. Strakovsky, I. I. Strauch, S. Sulkosky, V. Tan, J. A. Tenorio, M. Trotta, N. Tyson, R. Ungaro, M. Upton, D. W. Vallarino, S. Venturelli, L. Voskanyan, H. Voutier, E. Watts, D. P. Wei, X. Wood, M. H. Zachariou, N. Zhang, J. Zurek, M.
author_facet	Deur, A. Kuhn, S. E. Ripani, M. Zheng, X. Acar, A. G. Achenbach, P. Adhikari, K. P. Alvarado, J. S. Amaryan, M. J. Armstrong, W. R. Atac, H. Avakian, H. Baashen, L. Baltzell, N. A. Barion, L. Bashkanov, M. Battaglieri, M. Benkel, B. Benmokhtar, F. Bianconi, A. Biselli, A. S. Booth, W. A. ossu, F. B Bosted, P. Boiarinov, S. Brinkmann, K. Th. Briscoe, W. J. Bueltmann, S. Burkert, V. D. Carman, D. S. Chatagnon, P. Chen, J. P. Ciullo, G. Cole, P. L. Contalbrigo, M. Crede, V. D'Angelo, A. Dashyan, N. De Vita, R. Defurne, M. Diehl, S. Djalali, C. Drozdov, V. A. Dupre, R. Egiyan, H. Alaoui, A. El Fassi, L. El Elouadrhiri, L. Eugenio, P. Faggert, J. C. Fegan, S. Fersch, R. Filippi, A. Gates, K. Gavalian, G. Gilfoyle, G. P. Gothe, R. W. Guo, L. Hakobyan, H. Hattawy, M. Hauenstein, F. Heddle, D. Hobart, A. Holtrop, M. Ireland, D. G. Isupov, E. L. Jiang, H. Jo, H. S. Joosten, S. Kang, H. Keith, C. Khandaker, M. Kim, W. Klein, F. J. Klimenko, V. Konczykowski, P. Kovacs, K. Kripko, A. Kubarovsky, V. Lanza, L. Lee, S. Lenisa, P. Li, X. Long, E. MacGregor, I. J. D. Marchand, D. Mascagna, V. Matamoros, D. McKinnon, B. Meekins, D. Migliorati, S. Mineeva, T. Mirazita, M. Mokeev, V. Munoz-Camacho, C. Nadel-Turonski, P. Nagorna, T. Neupane, K. Niccolai, S. Osipenko, M. Ostrovidov, A. I. Pandey, P. Paolone, M. Pappalardo, L. L. Paremuzyan, R. Pasyuk, E. Paul, S. J. Phelps, W. Phillips, S. K. Pierce, J. Pilleux, N. Pokhrel, M. Price, J. W. Prok, Y. Radic, A. Reed, T. Richards, J. Rosner, G. Rossi, P. Rusova, A. A. Salgado, C. Schmidt, A. Schumacher, R. A. Sharabian, Y. G. Shirokov, E. V. Shrestha, U. Sirca, S. Slifer, K. Sparveris, N. Spreafico, M. Stepanyan, S. Strakovsky, I. I. Strauch, S. Sulkosky, V. Tan, J. A. Tenorio, M. Trotta, N. Tyson, R. Ungaro, M. Upton, D. W. Vallarino, S. Venturelli, L. Voskanyan, H. Voutier, E. Watts, D. P. Wei, X. Wood, M. H. Zachariou, N. Zhang, J. Zurek, M.
contents	The spin structure functions of the proton and the deuteron were measured during the EG4 experiment at Jefferson Lab in 2006. Data were collected for longitudinally polarized electron scattering off longitudinally polarized NH$_3$ and ND$_3$ targets, for $Q^2$ values as small as 0.012 and 0.02 GeV$^2$, respectively, using the CEBAF Large Acceptance Spectrometer (CLAS). This is the archival paper of the EG4 experiment that summaries the previously reported results of the polarized structure functions $g_1$, $A_1F_1$, and their moments $\overline Γ_1$, $\overline γ_0$, and $\overline I_{TT}$, for both the proton and the deuteron. In addition, we report on new results on the neutron $g_1$ extracted by combining proton and deuteron data and correcting for Fermi smearing, and on the neutron moments $\overline Γ_1$, $\overline γ_0$, and $\overline I_{TT}$ formed directly from those of the proton and the deuteron. Our data are in good agreement with the Gerasimov-Drell-Hearn sum rule for the proton, deuteron, and neutron. Furthermore, the isovector combination was formed for $g_1$ and the Bjorken integral $\overline Γ_1^{p-n}$, and compared to available theoretical predictions. All of our results provide for the first time extensive tests of spin observable predictions from chiral effective field theory ($χ$EFT) in a $Q^2$ range commensurate with the pion mass. They motivate further improvement in $χ$EFT calculations from other approaches such as the lattice gauge method.
format	Preprint
id	arxiv_https___arxiv_org_abs_2409_08365
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Measurement of the nucleon spin structure functions for 0.01<$Q^2$<1 GeV$^2$ using CLAS Deur, A. Kuhn, S. E. Ripani, M. Zheng, X. Acar, A. G. Achenbach, P. Adhikari, K. P. Alvarado, J. S. Amaryan, M. J. Armstrong, W. R. Atac, H. Avakian, H. Baashen, L. Baltzell, N. A. Barion, L. Bashkanov, M. Battaglieri, M. Benkel, B. Benmokhtar, F. Bianconi, A. Biselli, A. S. Booth, W. A. ossu, F. B Bosted, P. Boiarinov, S. Brinkmann, K. Th. Briscoe, W. J. Bueltmann, S. Burkert, V. D. Carman, D. S. Chatagnon, P. Chen, J. P. Ciullo, G. Cole, P. L. Contalbrigo, M. Crede, V. D'Angelo, A. Dashyan, N. De Vita, R. Defurne, M. Diehl, S. Djalali, C. Drozdov, V. A. Dupre, R. Egiyan, H. Alaoui, A. El Fassi, L. El Elouadrhiri, L. Eugenio, P. Faggert, J. C. Fegan, S. Fersch, R. Filippi, A. Gates, K. Gavalian, G. Gilfoyle, G. P. Gothe, R. W. Guo, L. Hakobyan, H. Hattawy, M. Hauenstein, F. Heddle, D. Hobart, A. Holtrop, M. Ireland, D. G. Isupov, E. L. Jiang, H. Jo, H. S. Joosten, S. Kang, H. Keith, C. Khandaker, M. Kim, W. Klein, F. J. Klimenko, V. Konczykowski, P. Kovacs, K. Kripko, A. Kubarovsky, V. Lanza, L. Lee, S. Lenisa, P. Li, X. Long, E. MacGregor, I. J. D. Marchand, D. Mascagna, V. Matamoros, D. McKinnon, B. Meekins, D. Migliorati, S. Mineeva, T. Mirazita, M. Mokeev, V. Munoz-Camacho, C. Nadel-Turonski, P. Nagorna, T. Neupane, K. Niccolai, S. Osipenko, M. Ostrovidov, A. I. Pandey, P. Paolone, M. Pappalardo, L. L. Paremuzyan, R. Pasyuk, E. Paul, S. J. Phelps, W. Phillips, S. K. Pierce, J. Pilleux, N. Pokhrel, M. Price, J. W. Prok, Y. Radic, A. Reed, T. Richards, J. Rosner, G. Rossi, P. Rusova, A. A. Salgado, C. Schmidt, A. Schumacher, R. A. Sharabian, Y. G. Shirokov, E. V. Shrestha, U. Sirca, S. Slifer, K. Sparveris, N. Spreafico, M. Stepanyan, S. Strakovsky, I. I. Strauch, S. Sulkosky, V. Tan, J. A. Tenorio, M. Trotta, N. Tyson, R. Ungaro, M. Upton, D. W. Vallarino, S. Venturelli, L. Voskanyan, H. Voutier, E. Watts, D. P. Wei, X. Wood, M. H. Zachariou, N. Zhang, J. Zurek, M. Nuclear Experiment The spin structure functions of the proton and the deuteron were measured during the EG4 experiment at Jefferson Lab in 2006. Data were collected for longitudinally polarized electron scattering off longitudinally polarized NH$_3$ and ND$_3$ targets, for $Q^2$ values as small as 0.012 and 0.02 GeV$^2$, respectively, using the CEBAF Large Acceptance Spectrometer (CLAS). This is the archival paper of the EG4 experiment that summaries the previously reported results of the polarized structure functions $g_1$, $A_1F_1$, and their moments $\overline Γ_1$, $\overline γ_0$, and $\overline I_{TT}$, for both the proton and the deuteron. In addition, we report on new results on the neutron $g_1$ extracted by combining proton and deuteron data and correcting for Fermi smearing, and on the neutron moments $\overline Γ_1$, $\overline γ_0$, and $\overline I_{TT}$ formed directly from those of the proton and the deuteron. Our data are in good agreement with the Gerasimov-Drell-Hearn sum rule for the proton, deuteron, and neutron. Furthermore, the isovector combination was formed for $g_1$ and the Bjorken integral $\overline Γ_1^{p-n}$, and compared to available theoretical predictions. All of our results provide for the first time extensive tests of spin observable predictions from chiral effective field theory ($χ$EFT) in a $Q^2$ range commensurate with the pion mass. They motivate further improvement in $χ$EFT calculations from other approaches such as the lattice gauge method.
title	Measurement of the nucleon spin structure functions for 0.01<$Q^2$<1 GeV$^2$ using CLAS
topic	Nuclear Experiment
url	https://arxiv.org/abs/2409.08365