[d2n-analysis-talk] PANIC Abstract [Due Tuesday, March 1 2011]

[David Flay]

Hi all,

I was curious as to your opinion of my draft of my abstract for the PANIC
conference:

title: Precision Measurement of the neutron d2: Probing the Lorentz Color
Force

	The quantity d2 is a measure of the Lorentz color force averaged over the
volume of the nucleon that ultimately yields
insight into its spin structure.

	While bag and soliton model calculations for the neutron d2 are
consistent with those of lattice QCD, current
 experimental data differ by approximately two standard deviations. 
Furthermore, large error bars of
 previous experiments affect the overall sign of d2n.  Therefore, its sign
and magnitude are still unclear.
	To address this issue, the experiment E06-014 was carried out from
February to March of 2009 at Jefferson Lab.  It consisted of measuring
double-spin asymmetries and the total cross section via scattering a
longitudinally polarized
electron beam off of a longitudinally or transversely polarized He-3
target, allowing for the construction of the neutron d2.
  The experiment covered excitation energies in the resonance and deep
inelastic valence quark regions.

	Preliminary He-3 asymmetries and cross sections will be presented for
data with beam energies of 4.73 and 5.89 GeV.



Any suggestions are welcome and appreciated.

Thanks,

Dave


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David Flay
Physics Department
Temple University
Philadelphia, PA 19122

office: Barton Hall, BA319
phone: (215) 204-1331

e-mail: flay at jlab.org
            flay at temple.edu

website: http://www.jlab.org/~flay
              http://quarks.temple.edu
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