학술논문
Measurement of double-polarization asymmetries in the quasi-elastic He→3(e→,e′p) process
Document Type
article
Author
M. Mihovilovič; G. Jin; E. Long; Y.-W. Zhang; K. Allada; B. Anderson; J.R.M. Annand; T. Averett; W. Bertozzi; W. Boeglin; P. Bradshaw; A. Camsonne; M. Canan; G.D. Cates; C. Chen; J.P. Chen; E. Chudakov; R. De Leo; X. Deng; A. Deltuva; A. Deur; C. Dutta; L. El Fassi; D. Flay; S. Frullani; F. Garibaldi; H. Gao; S. Gilad; R. Gilman; O. Glamazdin; J. Golak; S. Golge; J. Gomez; O. Hansen; D.W. Higinbotham; T. Holmstrom; J. Huang; H. Ibrahim; C.W. de Jager; E. Jensen; X. Jiang; M. Jones; H. Kamada; H. Kang; J. Katich; H.P. Khanal; A. Kievsky; P. King; W. Korsch; J. LeRose; R. Lindgren; H.-J. Lu; W. Luo; L.E. Marcucci; P. Markowitz; M. Meziane; R. Michaels; B. Moffit; P. Monaghan; N. Muangma; S. Nanda; B.E. Norum; K. Pan; D.S. Parno; E. Piasetzky; M. Posik; V. Punjabi; A.J.R. Puckett; X. Qian; Y. Qiang; X. Qui; S. Riordan; A. Saha; P.U. Sauer; B. Sawatzky; R. Schiavilla; B. Schoenrock; M. Shabestari; A. Shahinyan; S. Širca; R. Skibiński; J. St. John; R. Subedi; V. Sulkosky; W. Tireman; W.A. Tobias; K. Topolnicki; G.M. Urciuoli; M. Viviani; D. Wang; K. Wang; Y. Wang; J. Watson; B. Wojtsekhowski; H. Witała; Z. Ye; X. Zhan; Y. Zhang; X. Zheng; B. Zhao; L. Zhu
Source
Physics Letters B, Vol 788, Iss , Pp 117-121 (2019)
Subject
Language
English
ISSN
0370-2693
Abstract
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. Keywords: Double-polarization asymmetry, Helium-3 nucleus, Proton knock-out