What is w cut particle physics?

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Discussion Overview

The discussion centers around the parameters "col," "anti," and "w-cut" found in the Pythia particle/parton data code, specifically in the context of particle physics simulations. Participants seek to clarify the meanings and implications of these parameters.

Discussion Character

  • Technical explanation, Conceptual clarification

Main Points Raised

  • One participant references a website to inquire about the meanings of the parameters "col," "anti," and "w-cut."
  • Another participant asks where to find information on these parameters.
  • A different participant states that gluons have "col=2," quarks have "col=1," and all other particles have "col=0," suggesting a relationship to quantum numbers.
  • This participant also proposes that "anti" refers to particles and antiparticles, and speculates that "w-cut," being ten times the width, may relate to a restriction on decay width for simplification in calculations.
  • Another participant suggests consulting the Pythia manual for further information.

Areas of Agreement / Disagreement

The discussion does not appear to reach a consensus, as participants express different levels of understanding and provide varying interpretations of the parameters.

Contextual Notes

Some assumptions about the parameters and their implications remain unverified, and the discussion does not resolve the exact meanings or applications of "col," "anti," and "w-cut."

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And where I could find those parameters?
Thanks!
 
Gluons have col=2, quarks have col=1, all other particles have col=0. Which quantum number do you expect?
"Anti" is for particles/antiparticles.

As w-cut is 10 times width, I think that is a restriction on the width (decay width?) to simplify calculations.
 
Have you looked at the Pythia manual?
 

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