Measurement of double-polarization asymmetries in the quasi-elastic Process

Autor: R. A. Lindgren, C. Dutta, William A. Tobias, X. Zhan, F. Garibaldi, M. H. Shabestari, G. D. Cates, D. Flay, B. Schoenrock, Henryk Witała, Y. Zhang, X. Deng, Diana Parno, T. Holmstrom, J. P. Chen, B. Zhao, P. Monaghan, Yingxiao Wang, J. Huang, P. M. King, A. Saha, G. M. Urciuoli, Bogdan Wojtsekhowski, N. Muangma, J. Gomez, Shalev Gilad, S. Golge, R. Subedi, C. W. de Jager, T. Averett, Chunhui Chen, S. Širca, A. Shahinyan, P. C. Bradshaw, X. Jiang, Xin Qian, A. Kievsky, J. St. John, P. U. Sauer, H. P. Khanal, B. Moffit, Mustafa Canan, Kalyan Allada, R. Michaels, R. Skibiński, L. El Fassi, W. U. Boeglin, A. Deltuva, A. Deur, H. Kang, B. D. Anderson, Yiyang Zhang, W. Tireman, M. Meziane, M. Posik, William Bertozzi, Z. Ye, H.-J. Lu, Wolfgang Korsch, B. E. Norum, Michele Viviani, Hiroyuki Kamada, Vincent Sulkosky, O. Glamazdin, Pete Markowitz, Olfred Hansen, J. R. M. Annand, A. Camsonne, H. F. Ibrahim, J. LeRose, W. Luo, R. De Leo, Joseph M. Katich, Kacper Topolnicki, J. W. Watson, B. Sawatzky, E. Chudakov, Haiyan Gao, L. E. Marcucci, S. Riordan, V. A. Punjabi, D. Wang, Ronald Gilman, Douglas Higinbotham, M. K. Jones, E. Jensen, Jacek Golak, K. Pan, K. Wang, X. Qui, L. Y. Zhu, S. Frullani, G. Jin, X. Zheng, S. K. Nanda, Yujie Qiang, Andrew Puckett, Rocco Schiavilla, E. Long, M. Mihovilovič, E. Piasetzky
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Physics Letters
Popis: We report on a precise measurement of double-polarization asymmetries in electron-induced breakup of He3 proceeding to pd and ppn final states, performed in quasi-elastic kinematics at Q2=0.25(GeV/c)2 for missing momenta up to 250MeV/c. These observables represent highly sensitive tools to investigate the electromagnetic and spin structure of He3 and 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 He3 unless 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.
Databáze: OpenAIRE