학술논문
Measurement of the 3He Spin-Structure Functions and of Neutron (3He) Spin-Dependent Sum Rules at 0.035
Nuclear Experiment
High Energy Physics - Experiment
Document Type
Working Paper
Author
Sulkosky, V.; Singh, J. T.; Peng, C.; Chen, J. -P.; Deur, A.; Abrahamyan, S.; Aniol, K. A.; Armstrong, D. S.; Averett, T.; Bailey, S. L.; Beck, A.; Bertin, P.; Butaru, F.; Boeglin, W.; Camsonne, A.; Cates, G. D.; Chang, C. C.; Choi, Seonho; Chudakov, E.; Coman, L.; Cornejo, J. C; Craver, B.; Cusanno, F.; De Leo, R.; de Jager, C. W.; Denton, J. D.; Dhamija, S.; Feuerbach, R.; Finn, J. M.; Frullani, S.; Fuoti, K.; Gao, H.; Garibaldi, F.; Gayou, O.; Gilman, R.; Glamazdin, A.; Glashausser, C.; Gomez, J.; Hansen, J. -O.; Hayes, D.; Hersman, B.; Higinbotham, D. W.; Holmstrom, T.; Humensky, T. B.; Hyde, C. E.; Ibrahim, H.; Iodice, M.; Jiang, X.; Kaufman, L. J.; Kelleher, A.; Keister, K. E.; Kim, W.; Kolarkar, A.; Kolb, N.; Korsch, W.; Kramer, K.; Kumbartzki, G.; Lagamba, L.; Laine, V.; Laveissiere, G.; Lerose, J. J.; Lhuillier, D.; Lindgren, R.; Liyanage, N.; Lu, H. -J.; Ma, B.; Margaziotis, D. J.; Markowitz, P.; McCormick, K.; Meziane, M.; Meziani, Z. -E.; Michaels, R.; Moffit, B.; Monaghan, P.; Nanda, S.; Niedziela, J.; Niskin, M.; Pandolfi, R.; Paschke, K. D.; Potokar, M.; Puckett, A.; Punjabi, V. A.; Qiang, Y.; Ransome, R.; Reitz, B.; Roche, R.; Saha, A.; Shabetai, A.; Sirca, S.; Slifer, K.; Snyder, R.; Solvignon, P.; Stringer, R.; Subedi, R.; Tobias, W. A.; Ton, N.; Ulmer, P. E.; Urciuoli, G. M.; Vacheret, A.; Voutier, E.; Wang, K.; Wan, L.; Wojtsekhowski, B.; Woo, S.; Yao, H.; Yuan, J.; Zhan, X.; Zheng, X.; Zhu, L.
Source
Phys.Lett.B 805 135428 (2020)
Subject
Language
Abstract
The spin-structure functions $g_1$ and $g_2$, and the spin-dependent partial cross-section $\sigma_\mathrm{TT}$ have been extracted from the polarized cross-sections differences, $\Delta \sigma_{\parallel}\hspace{-0.06cm}\left(\nu,Q^{2}\right)$ and $\Delta \sigma_{\perp}\hspace{-0.06cm}\left(\nu,Q^{2}\right)$ measured for the $\vec{^\textrm{3}\textrm{He}}(\vec{\textrm{e}},\textrm{e}')\textrm{X}$ reaction, in the E97-110 experiment at Jefferson Lab. Polarized electrons with energies from 1.147 to 4.404 GeV were scattered at angles of 6$^{\circ}$ and 9$^{\circ}$ from a longitudinally or transversely polarized $^{3}$He target. The data cover the kinematic regions of the quasi-elastic, resonance production and beyond. From the extracted spin-structure functions, the first moments $\overline{\Gamma_1}\hspace{-0.06cm}\left(Q^{2}\right)$, $\Gamma_2\hspace{-0.06cm}\left(Q^{2}\right)$ and $I_{\mathrm{TT}}\hspace{-0.06cm}\left(Q^{2}\right)$ are evaluated with high precision for the neutron in the $Q^2$ range from 0.035 to 0.24~GeV$^{2}$. The comparison of the data and the chiral effective field theory predictions reveals the importance of proper treatment of the $\Delta$ degree of freedom for spin observables.
Comment: 7 pages, 5 figures, 3 tables. Version published in Phys. Lett. B
Comment: 7 pages, 5 figures, 3 tables. Version published in Phys. Lett. B