1. Measurement of double-polarization asymmetries in the quasi-elastic He^→ 3 (e^→, e′ p) process
- Author
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Mihovilovič , M., Jin, G., Long, E., Zhang, Y.-W., Allada, K., Anderson, B., Annand, J.R.M., Averett, T., Bertozzi, W., Boeglin, W., Bradshaw, P., Camsonne, A., Canan, M., Cates, G.D., Chen, C., Chen, J.P., Chudakov, E., De Leo, R., Deng, X., Deltuva, A., Deur, A., Dutta, C., El Fassi, L., Flay, D., Frullani, S., Garibaldi, F., Gao, H., Gilad, S., Gilman, R., Glamazdin, O., Golak, J., Golge, S., Gomez, J., Hansen, O., Higinbotham, D.W., Holmstrom, T., Huang, J., Ibrahim, H., de Jager, C.W., Jensen, E., Jiang, X., Jones, M., Kamada, H., Kang, H., Katich, J., Khanal, H.P., Kievsky, A., King, P., Korsch, W., LeRose, J., Lindgren, R., Lu, H.-J., Luo, W., Marcucci, L.E., Markowitz, P., Meziane, M., Michaels, R., Moffit, B., Monaghan, P., Muangma, N., Nanda, S., Norum, B.E., Pan, K., Parno, D.S., Piasetzky, E., Posik, M., Punjabi, V., Puckett, A.J.R., Qian, X., Qiang, Y., Qui, X., Riordan, S., Saha, A., Sauer, P.U., Sawatzky, B., Schiavilla, R., Schoenrock, B., Shabestari, M., Shahinyan, A., Širca, S., Skibi ́nski, R., St. John, J., Subedi, R., Sulkosky, V., Tireman, W., Tobias, W.A., Topolnicki, K., Urciuoli, G.M., Viviani, M., Wang, D., Wang, K., Wang, Y., Watson, J., Wojtsekhowski, B., Witała, H., Ye, Z., Zhan, X., Zhang, Y., Zheng, X., Zhao, B., and Zhu, L.
- Subjects
Double-polarization asymmetry ,Helium-3 nucleus ,Nuclear Theory ,Proton knock-out ,Nuclear Experiment - Abstract
We report on a precise measurement of double-polarization asymmetries in electron-induced breakup of 3Heproceeding to pdand ppnfinal states, performed in quasi-elastic kinematics at Q2=0.25 (GeV/c)2for missing momenta up to 250 MeV/c. These observables represent highly sensitive tools to investigate the electromagnetic and spin structure of 3Heand the relative importance of two-and three-body effects involved in the breakup reaction dynamics. The measured asymmetries cannot be satisfactorily reproduced by state-of-the-art calculations of 3Heunless their three-body segment is adjusted, indicating that the spin-dependent part of the nuclear interaction governing the three-body breakup process is much smaller than previously thought.
- Published
- 2019