[Cuga] **Reminder** Pizza Seminar - Wednesday, May 15, 2019 - A message from Lorelei Carlson

[Jodi Patient]

Jefferson Lab's Graduate Student and Post-Doc Association Wiki:
  https://gspda.jlab.org/wiki/index.php/Main_Page

               Please RSVP to:  patient at jlab.org by COB on May 13, 2019


                                           Wednesday, May 15, 2019

                                                        ***F113***

                                                      12:00-1:00 pm



                          "High Q2 Elastic Scattering on Three-Body Nuclei"


                                                          Scott Barcus

                                                          Jefferson Lab


Abstract:
By mining data from Jefferson Lab Hall A experiment E08-014 a new 3Heelastic cross section
was extracted from a large quasielastic background.When combined with recent high Q2 3He
elastic cross sectionmeasurements from Jefferson Lathnew data point improve our knowledge
of the form factors at large momentumtransfers.The new form factor fits were compared to
modern theoretical predictions.A conventional theoretical approach modeling two and
three-body nucleoninteractions with relativistic corrections was reasonably successful
atpredicting the charge form factorowever, theory failed to accurately predict the magneticorm
factors with the first diffractive minimum ofthe 3He magnetic form factor actually moving further
away from theory.This disagreement between theory and experiment provides motivation fornew
asymmetry measurements using polarized 3He and a polarized electronbeam which would be able
to locate the true locations of the diffractiveminima.
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