Measurement of double-polarization asymmetries in the quasi-elastic He→3(e→,e′p) process

doi:10.1016/j.physletb.2018.10.063

Measurement of double-polarization asymmetries in the quasi-elastic He→3(e→,e^′p) process

Physics And Astronomy

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3 Scopus citations

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.

Original language	English
Pages (from-to)	117-121
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	788
DOIs	https://doi.org/10.1016/j.physletb.2018.10.063
State	Published - Jan 10 2019

Bibliographical note

Funding Information:
We thank the Jefferson Lab Hall A and Accelerator Operations technical staff for their outstanding support. This work was supported in part by the National Science Foundation and the U.S. Department of Energy . Jefferson Science Associates, LLC, operates Jefferson Lab for the U.S. DOE under U.S. DOE contract DE-AC05-06OR23177 . This work was supported in part by the Slovenian Research Agency (research core funding No. P1–0102 ). This work is a part of the LENPIC project and was supported by the Polish National Science Centre under Grants No. 2016/22/M/ST2/00173 and 2016/21/D/ST2/01120 . The numerical calculations of the Krakow group were partially performed on the supercomputer cluster of the JSC, Jülich, Germany.

Funding Information:
We thank the Jefferson Lab Hall A and Accelerator Operations technical staff for their outstanding support. This work was supported in part by the National Science Foundation and the U.S. Department of Energy. Jefferson Science Associates, LLC, operates Jefferson Lab for the U.S. DOE under U.S. DOE contract DE-AC05-06OR23177. This work was supported in part by the Slovenian Research Agency (research core funding No. P1–0102). This work is a part of the LENPIC project and was supported by the Polish National Science Centre under Grants No. 2016/22/M/ST2/00173 and 2016/21/D/ST2/01120. The numerical calculations of the Krakow group were partially performed on the supercomputer cluster of the JSC, Jülich, Germany.

Publisher Copyright:
© 2018 The Author

Keywords

Double-polarization asymmetry
Helium-3 nucleus
Proton knock-out

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/j.physletb.2018.10.063

Cite this

@article{765b01a13d28494cb6d0ca59da7f7429,

title = "Measurement of double-polarization asymmetries in the quasi-elastic He→3(e→,e′p) process",

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",

author = "M. Mihovilovi{\v c} and G. Jin and E. Long and Zhang, {Y. W.} and K. Allada and B. Anderson and Annand, {J. R.M.} and T. Averett and W. Bertozzi and W. Boeglin and P. Bradshaw and A. Camsonne and M. Canan and Cates, {G. D.} and C. Chen and Chen, {J. P.} and E. Chudakov and {De Leo}, R. and X. Deng and A. Deltuva and A. Deur and C. Dutta and {El Fassi}, L. and D. Flay and S. Frullani and F. Garibaldi and H. Gao and S. Gilad and R. Gilman and O. Glamazdin and J. Golak and S. Golge and J. Gomez and O. Hansen and Higinbotham, {D. W.} and T. Holmstrom and J. Huang and H. Ibrahim and {de Jager}, {C. W.} and E. Jensen and X. Jiang and M. Jones and H. Kamada and H. Kang and J. Katich and Khanal, {H. P.} and A. Kievsky and P. King and W. Korsch and J. LeRose",

note = "Funding Information: We thank the Jefferson Lab Hall A and Accelerator Operations technical staff for their outstanding support. This work was supported in part by the National Science Foundation and the U.S. Department of Energy . Jefferson Science Associates, LLC, operates Jefferson Lab for the U.S. DOE under U.S. DOE contract DE-AC05-06OR23177 . This work was supported in part by the Slovenian Research Agency (research core funding No. P1–0102 ). This work is a part of the LENPIC project and was supported by the Polish National Science Centre under Grants No. 2016/22/M/ST2/00173 and 2016/21/D/ST2/01120 . The numerical calculations of the Krakow group were partially performed on the supercomputer cluster of the JSC, J{\"u}lich, Germany. Funding Information: We thank the Jefferson Lab Hall A and Accelerator Operations technical staff for their outstanding support. This work was supported in part by the National Science Foundation and the U.S. Department of Energy. Jefferson Science Associates, LLC, operates Jefferson Lab for the U.S. DOE under U.S. DOE contract DE-AC05-06OR23177. This work was supported in part by the Slovenian Research Agency (research core funding No. P1–0102). This work is a part of the LENPIC project and was supported by the Polish National Science Centre under Grants No. 2016/22/M/ST2/00173 and 2016/21/D/ST2/01120. The numerical calculations of the Krakow group were partially performed on the supercomputer cluster of the JSC, J{\"u}lich, Germany. Publisher Copyright: {\textcopyright} 2018 The Author",

year = "2019",

month = jan,

day = "10",

doi = "10.1016/j.physletb.2018.10.063",

language = "English",

volume = "788",

pages = "117--121",

}

TY - JOUR

T1 - Measurement of double-polarization asymmetries in the quasi-elastic He→3(e→,e′p) process

AU - Mihovilovič, M.

AU - Jin, G.

AU - Long, E.

AU - Zhang, Y. W.

AU - Allada, K.

AU - Anderson, B.

AU - Annand, J. R.M.

AU - Averett, T.

AU - Bertozzi, W.

AU - Boeglin, W.

AU - Bradshaw, P.

AU - Camsonne, A.

AU - Canan, M.

AU - Cates, G. D.

AU - Chen, C.

AU - Chen, J. P.

AU - Chudakov, E.

AU - De Leo, R.

AU - Deng, X.

AU - Deltuva, A.

AU - Deur, A.

AU - Dutta, C.

AU - El Fassi, L.

AU - Flay, D.

AU - Frullani, S.

AU - Garibaldi, F.

AU - Gao, H.

AU - Gilad, S.

AU - Gilman, R.

AU - Glamazdin, O.

AU - Golak, J.

AU - Golge, S.

AU - Gomez, J.

AU - Hansen, O.

AU - Higinbotham, D. W.

AU - Holmstrom, T.

AU - Huang, J.

AU - Ibrahim, H.

AU - de Jager, C. W.

AU - Jensen, E.

AU - Jiang, X.

AU - Jones, M.

AU - Kamada, H.

AU - Kang, H.

AU - Katich, J.

AU - Khanal, H. P.

AU - Kievsky, A.

AU - King, P.

AU - Korsch, W.

AU - LeRose, J.

N1 - Funding Information: We thank the Jefferson Lab Hall A and Accelerator Operations technical staff for their outstanding support. This work was supported in part by the National Science Foundation and the U.S. Department of Energy . Jefferson Science Associates, LLC, operates Jefferson Lab for the U.S. DOE under U.S. DOE contract DE-AC05-06OR23177 . This work was supported in part by the Slovenian Research Agency (research core funding No. P1–0102 ). This work is a part of the LENPIC project and was supported by the Polish National Science Centre under Grants No. 2016/22/M/ST2/00173 and 2016/21/D/ST2/01120 . The numerical calculations of the Krakow group were partially performed on the supercomputer cluster of the JSC, Jülich, Germany. Funding Information: We thank the Jefferson Lab Hall A and Accelerator Operations technical staff for their outstanding support. This work was supported in part by the National Science Foundation and the U.S. Department of Energy. Jefferson Science Associates, LLC, operates Jefferson Lab for the U.S. DOE under U.S. DOE contract DE-AC05-06OR23177. This work was supported in part by the Slovenian Research Agency (research core funding No. P1–0102). This work is a part of the LENPIC project and was supported by the Polish National Science Centre under Grants No. 2016/22/M/ST2/00173 and 2016/21/D/ST2/01120. The numerical calculations of the Krakow group were partially performed on the supercomputer cluster of the JSC, Jülich, Germany. Publisher Copyright: © 2018 The Author

PY - 2019/1/10

Y1 - 2019/1/10

N2 - 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.

AB - 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.

KW - Double-polarization asymmetry

KW - Helium-3 nucleus

KW - Proton knock-out

UR - http://www.scopus.com/inward/record.url?scp=85057865443&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85057865443&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2018.10.063

DO - 10.1016/j.physletb.2018.10.063

M3 - Article

AN - SCOPUS:85057865443

VL - 788

SP - 117

EP - 121

ER -