| Issue |
EPJ Web of Conferences
Volume 36, 2012
Resonance Workshop at UT Austin
|
|
|---|---|---|
| Article Number | 00016 | |
| Number of page(s) | 7 | |
| DOI | https://doi.org/10.1051/epjconf/20123600016 | |
| Published online | 29 November 2012 | |
https://doi.org/10.1051/epjconf/20123600016
Hadron Medium Modifications
University of South Carolina, Columbia, SC 29208
a e-mail: strauch@sc.edu
Proton recoil polarization in quasielastic electron scattering is a powerful tool to study properties of nucleons bound in the nuclear medium. The most precise results have been obtained at Jefferson Lab in the 4He(e, e′ p)3 H reaction at four momentum transfers of Q2 = 0.8 (GeV/c)2 and at 1.3 (GeV/c)2. The ratio of polarization-transfer components, P′x/P′z, is significantly reduced compared to the ratio obtained in elastic 1H(e, e′ p) scattering. This depletion is well described with models which include in-medium modifications of the proton form factor or, alternatively, by strong charge-exchange final-state interactions. A future experiment will measure the dependence of this effect on the momentum of the struck nucleon in both, the 4He(e, e′ p)3H and 2H(e, e′ p)n reactions.
© Owned by the authors, published by EDP Sciences, 2012
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