[BLASTTALK] [Fwd: Neutron tensor asymmetry]

From: vitalik (vziskin@mit.edu)
Date: Sat Oct 30 2004 - 19:07:55 EDT


I've sent this message in the morning but a network problem made it
undeliverable. So here it is. I apprologize if you get this message twice.

                                        Vitaliy


attached mail follows:


Whether we wanted or not, we got a rather good measurement of a tensor
asymmetry on the quasi-elastic neutron knock-out from deuterium. I
don't know if anyone did this measurement ever. What it tells me so far
is that when one builds vector asymmetry, tensor asymmetry cannot be
neglected in case of a neutron ( for proton it is small). I put all
data into one Q^2 point to improve statistics. However, ultimately we
can do Q^2 evolution of this asymmetry as more statistics become
available. I asummed 70% Pzz, which is in the ball park but it could
be somewhat different. I will ask Chi for a more precise value. I
also, include 3 other asymmetries which are expected to be zero and in
fact they all "hug" zero line withing 1%.

                                              Cheers, Vitaliy



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