Hi guys,
I have just received this message from Alexander Ilychev. He is responsible
with POLRAD, EXCLURAD, etc. I have talked to him about all 4 pion channels at
BLAST.
Please read his message.
For my interest, I still need some feedback regarding POLRAD, but people may be
interested in EXCLURAD as well.
---------- Forwarded message ----------
Date: Sat, 14 Jan 2006 17:08:28 +0100
From: Alexander Ilyichev <ily@hep.by>
To: Octavian F Filoti <ofiloti@cisunix.unh.edu>
Subject: Re: polrad switches
Dear Octavian,
Just now I am ready to consider of your problems with Polrad. But first of all
please let me give you some questions.
As you wrote before you look at 4 reactions at BLAST:
p(e, e'p)pi_0; detect e' and p
p(e, e'pi_+)n; detect e' and pi_+
p(e, e'n)pi_+; detect e' and n
p(e,e'); detect only e'
As I understand this is exclusive reactions with pi-meson production. Nowadays
the program for calculation of radiative correction to exclusive process with
polarized electron beam and unpolarized target is EXCLURAD. You can find this
code here
and its description in the paper:
QED RADIATIVE CORRECTIONS IN PROCESSES OF EXCLUSIVE PION ELECTROPRODUCTION.
By A. Afanasev (Jefferson Lab), I. Akushevich (Duke U.), V. Burkert, K. Joo
(Jefferson Lab),. JLAB-PHY-02-07, Aug 2002. 13pp.
Published in Phys.Rev.D66:074004,2002
e-Print Archive: hep-ph/0208183
Now I think that it is a good time to generalized EXCLURAD on polarized target
as well as to develop a new well-work Monte Carlo generator for the simulation
of radiative events in exclusive reaction.
Starting from Mart I am almost free and can performed such kind of
calculation. In order to do that I need only know the structure of the hadronic
tensor like formulae (6), (12) with any parametrization
for the structure functions like (19) from the paper about EXCLURAD.
If it is interesting for your collaboration and if anybody can find an
appropriate hadronic tensor, probably your collaboration can invite me in order
to make some calculations as well as discussed some problems concerning
radiative corrections.
Thanks,
Sasha
This archive was generated by hypermail 2.1.2 : Mon Feb 24 2014 - 14:07:33 EST