[local physicists] Theses Defense (12/9/2011) Sharon Careccia

[Malin, Delicia M.]

Thesis Defense



Sharon Careccia


"Single and Double Spin Asymmetries From pi- Electro-Production in the Resonance Region Using Deuterium"

1:00 p.m.

Friday, December 9, 2011

The single and double spin asymmetries At and Aet have been measured in ** electro-production using a longitudinally polarized electron beam and a polarized ND3 target. The electron beam was polarized using a strained GaAs cathode and the target was polarized using Dynamic Nuclear Polarization. The data were collected at beam energies of 1.6, 1.7, 2.5 and 4.2 GeV in Hall B at Jefferson Lab in the spring of 2000. The final state particles were detected in the CEBAF Large Acceptance Spectrometer (CLAS).  The d(e,e´**p)p exclusive channel was identified using the missing mass technique and the asymmetries were extracted as a function of the momentum transfer Q2, invariant mass W, and center of mass pion angles cos(**) and **. The results are generally in agreement with the phenomenological model MAID at low energies, but there are discrepancies in the 2nd and 3rd resonance regions, as well as at forward angles.



OCNPS 304, Physics Conference Room

All interested persons are cordially invited to attend.
All are Welcome!


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