Analysis Update for the Neutron Two-Photon Exchange Experiment in Hall A at Jefferson Lab
ORAL
Abstract
The neutron Two-Photon Exchange (nTPE) experiment in Hall A, which uses the 12 GeV electron accelerator at Jefferson Lab and is the part of the Super BigBite Spectrometer (SBS) program, will be the first measurement of the two-photon exchange contribution in elastic electron-neutron scattering from a deuterium target at Q2 = 4.5 (GeV/c)2. The two-photon exchange contribution to e-N elastic scattering will be extracted by measuring the ratio(neutron/proton) of quasi-elastic yields at a single Q2, but at two different beam energies (and electron scattering angles). This will allow an extraction of the Rosenbluth slope for the neutron which is sensitive to two-photon exchange amplitudes. The experiment was performed using the BigBite Spectrometer which detected the scattered electrons, and the Super BigBite Spectrometer which detected the scattered nucleons using a large aperture dipole magnet and hadron calorimeter. The scope of this talk will be an overview of the physics motivation for the nTPE experiment and an update about the ongoing data analysis for my thesis.
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Presenters
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Ezekiel Wertz
William & Mary
Authors
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Ezekiel Wertz
William & Mary