Speaker
Florian Hauenstein
(Old Dominion University)
Description
Deep Inelastic Scattering (DIS) experiments on deuterium where the recoiling nucleon is
detected as well ("tagged"), allows to measure how the quark-structure of the bound nucleon (as measured
by its “structure function”) varies with its initial momentum (as
measured by the spectator nucleon momentum). Therefore, we can determine how and why the
structure of bound protons differs from free ones. This will resolve the 35-year-old enigma of the
EMC effect.
Two measurements for tagged DIS measurements on deuterium are planned at Jefferson Lab. They will use two new detectors,
BAND (Backward Angle Neutron Detector) and LAD (Large Angle Spectrometer), to detect the recoiling neutrons and protons,
respectively. BAND is installed just upstream of the existing CLAS12 spectrometer in Hall B to detect high
momentum neutrons at scattering angles between 160 and 170
degrees. LAD will be installed at Hall C to detect high momentum protons at 90 to 170 degrees.
In my talk, I will present the planned measurements and preliminary results from the fall 2018 calibration
and winter 2019 production runs for the BAND detector.
Primary author
Florian Hauenstein
(Old Dominion University)
