22-26 January 2018
Bormio, Italy
Europe/Berlin timezone

Investigating the EMC Effect in Highly-Virtual Nucleons at Jefferson Lab

22 Jan 2018, 17:06
Bormio, Italy

Bormio, Italy

Poster Hadron Physics Monday Afternoon


Efrain Segarra (Massachusetts Institute of Technology)


The EMC effect, the phenomenon by which quark distributions are modified in bound nucleons, has defied explanation since its discovery over 30 years ago. Recently, there have been indications, experimentally and theoretically, that the EMC effect may be linked to high-momentum nucleons. Rather than the EMC effect being caused by a modest modification in all nucleons, it is possible that highly virtual nucleons are modified substantially. BAND (Backward Angle Neutron Detector) is an experiment in 2018 at Jefferson Lab Hall B to search for medium-modification in high-momentum nucleons. By using a method of spectator-tagging, one can tag on the virtuality of the struck proton to study modification in deep inelastic scattering. In my talk, I will present the EMC effect, discuss its possible connection to high momentum nucleons, and describe how BAND will select on these nucleons (spectator-tagging) to extract medium-modification effects. Finally, I will present recent results from a Geant4 simulation, the results of measurements at our detector development test stand at MIT to select detector component models, and the status of construction of the BAND array.

Primary author

Efrain Segarra (Massachusetts Institute of Technology)

Presentation Materials

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