Precise Extraction of the Induced Polarization in the He-4(e,e(l)(p)over-right-arrow)H-3 Reaction
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Alternative title
Precise Extraction of the Induced Polarization in the 4He(e,e′p⃗)3H Reaction
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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.
Date issued
2011-01Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
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
ISSN
0031-9007