Measurement of double-polarization asymmetries in the quasi-elastic ³vec{He}(vec{e},e'p) process

M. Mihovilovi\v{c} , G. Jin , E. Long , Y.-W. Zhang , K. Allada , B. Anderson , J. R. M. Annand , T. Averett

show 94 more authors

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. \v{S}irca R. Skibi\'nski 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. Wita{\l}a Z. Ye X. Zhan Y. Zhang X. Zheng B. Zhao L. Zhu the Jefferson Lab Hall A Collaboration

Authors on Pith no claims yet

classification ⚛️ nucl-ex

keywords mathrmasymmetriesbreakupthree-bodydouble-polarizationmeasurementprocessquasi-elastic

0 comments

read the original abstract

We report on a precise measurement of double-polarization asymmetries in electron-induced breakup of $^3\mathrm{He}$ proceeding to $\mathrm{pd}$ and $\mathrm{ppn}$ final states, performed in quasi-elastic kinematics at $Q^2 = 0.25\,(\mathrm{GeV}/c)^2$ for missing momenta up to $250\,\mathrm{MeV}/c$. These observables represent highly sensitive tools to investigate the electromagnetic and spin structure of $^3\mathrm{He}$ 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 $^3\mathrm{He}$ 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.

This paper has not been read by Pith yet.

Measurement of double-polarization asymmetries in the quasi-elastic ³vec{He}(vec{e},e'p) process

discussion (0)