[Comphep-common] new CompHEP - 4.5.1

[trpisova at fyzika.uniza.sk]

   Dear ladies and gentlemen,
  These are rather questions directed to the specialists of the CompHEP
team. They concern the latest version of CompHEP - comphep-4.5.1. I
haven't found answers to them in any comphep manual.

1. What is the meaning of using the file symb_batch.pl in the non-GUI mode
and what is actually the non-GUI mode?

2. It seems I can calculate the e+e- processes in two ways:
(a) Using Simpson. In that case in the menu "Initial State" I have

    Beam particle 1: parton
    Beam particle 2: parton
    Str.Fun1: OFF
    Str.Fun2: OFF

(b) I can change these items into

    Beam particle 1: electron
    Beam particle 2: electron
    Str.Fun1: ISR(100 Beamstr.:540 ...)
    Str.Fun2: ISR(100 Beamstr.:540 ...)

i.e. the beamstrahlung is ON. But then I loose the Simpson option in the
menu. My question is what is the difference between (a) and (b) in case of
e+e- processes. Are both right or one of them is wrong?

3. I attach a distribution of a e+e- process obtained with Simpson. There
is a very weird end at the high energies - the curve, or rather the
straight line, goes very sharply up. I don't know why is it. At this
occasion I also found that the item "LaTeX" in the menu one gets when
plotting distributions doesn't work.

  Thank you very much for your time and help.
   Best regards
     Beata, Slovak Republic

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