[Triumf-seminars] TRIUMF Theory Seminar today at 13:00
TRIUMF Seminars
triumf-seminars at lists.triumf.ca
Tue Nov 26 05:00:03 PST 2013
Date/Time: Tue 2013-11-26 at 13:00
Location: Theory Room
Speaker: Alessandro Lovato (Argonne National Laboratory)
Title: Charge Form Factor and Sum Rules of Electromagnetic and Neutral Current Response Functions in Carbon-12
Abstract: I will report on an ab initio calculation of the 12C elastic form factor
and sum rules of longitudinal and transverse response functions measured
in inclusive (e,e') scattering. Our calculations are based on realistic nuclear
potentials and electromagnetic currents. The longitudinal elastic form factor
and sum rule are found to be in satisfactory agreement with available
experimental data. As I will show, a direct comparison between theory and
experiment is difficult, particularly for the transverse sum rule. However, it is
shown that the calculated one has large contributions from two-body currents,
indicating that these mechanisms lead to a significant enhancement of the
quasi-elastic transverse response. This fact may have implications for the
anomaly observed by the MiniBooNe collaboration in recent neutrino
quasi-elastic charge-changing scattering data off 12C. Preliminary results
on the neutral current sum rules, obtained within the same theoretical
framework and presenting the same enhancement from the two-body
terms, will also be presented.
______________________________
General TRIUMF seminar information available at http://www.triumf.ca/home/upcoming-events/about-seminars-lectures
More information about the Triumf-seminars
mailing list