J. R. Calarco

Precision Rosenbluth measurement of the proton elastic form factors

We report the results of a new Rosenbluth measurement of the proton electromagnetic form factors at Q2 values of 2.64, 3.20, and 4.10 GeV2. Cross sections were determined by detecting the recoiling proton, in contrast to previous measurements which detected the scattered electron. Cross sections were determined to 3%, with relative uncertainties below 1%. The ratio mu(p)G(E)/G(M) was determined to 4%-8% and showed mu(p)G(E)/G(M) approximately 1. These results are consistent with, and much more precise than, previous Rosenbluth extractions. They are inconsistent with recent polarization transfer measurements of similar precision, implying a systematic difference between the techniques.

Precision Measurement of the Neutron Spin Asymmetries and Spin-dependent Structure Functions in the Valence Quark Region

We report on measurements of the neutron spin asymmetries

-Measurement of the proton's electric to magnetic form factor ratio from 1H(over -->)(e(over -->),e'p).

A_{1,2}^n

Measurement of the proton's electric to magnetic form factor ratio from H→1(e→,e′p)

and polarized structure functions

Final analysis of proton form factor ratio data at Q2 = 4.0, 4.8, and 5.6 GeV2

g_{1,2}^n

Precision Measurement of the Neutron Spin Asymmetry A1 n and Spin-Flavor Decomposition in the Valence Quark Region

at three kinematics in the deep inelastic region, with

The Charge Form Factor of the Neutron at Low Momentum Transfer from the H-2-polarized (e-polarized, e-prime n) p Reaction

x=0.33

Nab: Measurement principles, apparatus and uncertainties

, 0.47 and 0.60 and

The Charge Form Factor of the Neutron at Low Momentum Transfer from the

Q^2=2.7

^{2}\vec{\rm H}(\vec{\rm e},{\rm e}'{\rm n}){\rm p}

, 3.5 and 4.8 (GeV/c)