PYTHIA  8.312
Variables
VinciaConstants Namespace Reference

Maths headers. More...

Variables

const double UNITY = 1.0
 
const double DECI = 1.0e-1
 
const double CENTI = 1.0e-2
 
const double MILLI = 1.0e-3
 
const double MICRO = 1.0e-6
 
const double NANO = 1.0e-9
 
const double PICO = 1.0e-12
 
const double CA = 3.0
 Colour factors in Vincia normalization.
 
const double CF = 8.0/3.0
 
const double TR = 1.0
 
const double NC = 3.0
 
const double gammaE = 0.577215664901532860606512090082402431042
 Mathematical constants (Euler–Mascheroni constant).
 
const int DEBUG = 4
 Verbosity levels. Vincia has one more level (debug) beyond report.
 
const int DASHLEN = 80
 Padding length for dashes in standardised Vincia verbose output.
 

Detailed Description

Maths headers.

VinciaCommon.h is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains global constants for the Vincia antenna shower as well as various auxiliary classes used by the Vincia shower model.Include Pythia 8 headers. Global Vincia constants, defined to live in a Vincia-specific namespace to avoid potential clashes with anything else defined in Pythia8.

Variable Documentation

const double UNITY = 1.0

Global numerical precision targets (should be kept within a reasonable margin of machine precision). Large values may result in strange results due to non-zero terms being artificially forced to zero.