[G14_run] [EXTERNAL] Analysis note on the extraction of G and Sigma polarization observables for pi-p photo-production on quasi-free polarized neutron

[Annalisa D'Angelo]

Dear Chair of the Hadron Spectroscopy Working Group,

Haiyun Lu, within the g14 group, has been working in the last few years 
at the extraction of Sigma and G single and double polarization 
observables for the pi+n photoproduction on quasi-free neutron target, 
using data obtained from linearly polarized photons impinging on the 
longitudinally polarized HD target. Results on Sigma asymmetry are 
compared with the ones obtained from g13 data, for consistency checks. 
The results on G asymmetry are the first ever obtained.

A version of the analysis note is under internal final revision of the 
g14 group and will soon be ready for the CLAS Collaboration review, the 
title being:

"Measuring Σ andGof single charged pion production frompolarized 
quasi-free neutron target"

It would be great if you could start putting together a Review Committee 
to ensure a timely review process.

Thank you in advance

All the best

Annalisa

on behalf of the g14 group


-- 
================================================
Prof. Annalisa D'Angelo
Dip. Fisica, Universita' di Roma "Tor Vergata"
Istituto Nazionale di Fisica Nucleare
Sezione di Roma Tor Vergata, Rome Italy
email:annalisa.dangelo at roma2.infn.it  
Jefferson Laboratory, Newport News, VA USA
Email:annalisa at jlab.org
Tel: + 39 06 72594562
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