[Rivet] [Fwd: Re: Using S0 + Prof LEP FS tune]

[Andy Buckley]

As promised, the list of Pythia 6 params to make the S0-Pro tune.
Instead of "call pytune(300)", you will need to set "MSTP(5) = 300" via
either AGILe or Athena.

Andy


-------- Original Message --------
Subject: Re: Using S0 + Prof LEP FS tune
Date: Wed, 19 Nov 2008 17:27:11 -0600
From: Peter Skands <skands at fnal.gov>
Organisation: Fermilab
To: Andy Buckley <andy.buckley at durham.ac.uk>
References: <49249C29.2070307 at durham.ac.uk>

Sorry, I forgot to mention ...

CTEQ5L was used for all of those tunes. The only CTEQ6 tunes currently
available
are Rick Field's tune D6(T) of the old model (also included in PYTUNE,
see the
update notes or the pytune.f source file for the complete list of
implemented
tunes) and an ATLAS tune of the new framework which I am not convinced
"beats"
S0 even if it does use CTEQ6.

To summarize: the best interleaved tune currently available I think is
obtained by

C...Tune S0
        CALL PYTUNE(300)
C...Augment with Professor's LEP tune
          PARJ(1)  = 0.073
          PARJ(2)  = 0.2
          PARJ(3)  = 0.94
          PARJ(4)  = 0.032
          PARJ(11) = 0.31
          PARJ(12) = 0.4
          PARJ(13) = 0.54
          PARJ(25) = 0.63
          PARJ(26) = 0.12
C...# Always use pT-ordered shower:
          MSTJ(41) = 12
C...# Switch on Bowler:
          MSTJ(11) = 5
          PARJ(21) = 3.1327e-01
          PARJ(41) = 4.8989e-01
          PARJ(42) = 1.2018e+00
          PARJ(47) = 1.0000e+00
          PARJ(81) = 2.5696e-01
          PARJ(82) = 8.0000e-01

Cheers,
Peter

Thus spake Andy Buckley :
> Hi Peter,
> 
> Can you remind me what is the status of the Pythia 6 pT-ordered shower /
> interleaved UE tune that we were going to call "PRO1" (or similar)? Is
> this a standard tune now in Pythia, or will that come with 6420?
> 
> For now, so I can show D0 how some of their distributions are described
> by the "best available" Pythia tunes, how can I activate this tune? And
> what PDF set was used in making the ISR/UE part?
> 
> Thanks!
> Andy

-- 
Dr Andy Buckley
Institute for Particle Physics Phenomenology
Durham University
0191 3343798 | 0191 3732613 | www.insectnation.org