Precise Extraction of the Induced Polarization in the He-4(e,e(l)(p)over-right-arrow)H-3 Reaction
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Malace-2011-Precise Extraction of the Induced Polarization in the.pdf
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Author(s)
Puckett, Andrew James R.
Qiang, Yi
Zhan, X.
Alternative Title
Precise Extraction of the Induced Polarization in the 4He(e,e′p⃗)3H Reaction
Date Issued
January 2011
Journal
Physical review letters
Publisher
American Physical Society
Citation
Malace, S. et al. “Precise Extraction of the Induced Polarization in the ^{4}He(e,e^{′}p[over →])^{3}H Reaction.” Physical Review Letters 106.5 (2011) : n. pag. © 2011 American Physical Society
Version
Final published version
Abstract
We measured with unprecedented precision the induced polarization Py [P subscript y] in 4Heðe; e0 p~ Þ3H [superscript 4He (e, e prime p right over-arrow) superscript 3 H at Q2 [Q superscript 2] = 0.8
and 1:3 (GeV=c)2 [(GeV / c) superscript 2]. The induced polarization is indicative of reaction-mechanism effects beyond the
impulse approximation. Our results are in agreement with a relativistic distorted-wave impulse approximation
calculation but are overestimated by a calculation with strong charge-exchange effects. Our data
are used to constrain the strength of the spin-independent charge-exchange term in the latter calculation.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.106.052501
