Measurement of tensor analyzing powers in elastic electron deuteron scattering with BLAST

Abstract

This work reports a precision measurement of deuteron tensor analyzing powers T20 and T21 at the MIT-Bates Linear Accelerator Center. Data were collected simultaneously over a momentum transfer range of 2:15 to 4:5 fm¡1 in the Bates Large Acceptance Spectrometer Toroid (BLAST) with a highly polarized internal gas target. Deuterium form factors GC and GQ were separated using the new data with better precision and the location of the first node of the deuteron monopole form factor was confirmed. The new data provide strong constraints on the nuclear models in a momentum transfer range covering the minima of T20 and the first node of GC.