The codes that will be used are:
qfs (epc)
-
(
) cross section near resonance region[1]
whitlow (wiser)
-
(
) cross section in deep inelastic region [2]([3])
rosetail -
elastic tail
pos_epc, pos_wiser -
cross section
For positron yield only one reaction channel has been included for calculating
cross section:
. The code pos_epc was first
developed by J.P.Chen based on SLAC data and epc code for yield of
.
Code pos_wiser was developed by using the same reaction channel, but using
wiser's fit for yield of
.
[1] J. W. Lightbody, Jr., J. S. O'Connell, Computers in Physics,
May/June (1988);
[2] L. W. Whitlow, SLAC-Report-357, (1990);
[3] D. E. Wiser, Ph.D. thesis, Univ. of Wisconsin, (1977);
[4] Mo and Tsai,Rev. Mod. Phys., 41, 205 (1969);
[5] Stein, et. al. Phys. Rev. D,12, 1884 (1975).