Classes
class	constants

class	RPVSUSY

class	RPVSUSYbranchings

Functions
	PDGname (particle)

	PDGcode (particle)

	mass (particle)

	width (particle)

	lifetime (particle)

Variables
	pdg = ROOT.TDatabasePDG.Instance()

	c = constants()

Detailed Description

# ==================================================================
#   Python module
#
#   This module provides methods to compute the lifetime and
#   branching ratio of SUSY RPV neutralino given its mass and couplings as
#   input parameters.
#
#   Created: 30/04/2016 Konstantinos A. Petridis (konstantinos.petridis@cern.ch)
#
#   Sample usage:
#     ipython -i rpvsusy.py
#     In [1]: b = RPVSYSY(1.,[1, 1],1e3,1,True)
#     HNLbranchings instance initialized with couplings:
#          \lambda_{production}       = 1GeV
#          \lambda_{decay}            = 1GeV
#          universal sfermion mass    = 1e3GeV
#
#     benchmark scenario:
#          1 (values between 1 and 5)
#     and mass:
#          m = 1.0 GeV
#     In [2]: b.computeNLifetime()
#     Out[2]: 0.0219634078804
#     In [3]: b.findBranchingRatio('N -> K+ mu-')
#     Out[3]: 0.11826749348890987
#
# ==================================================================

Function Documentation

◆ lifetime()

rpvsusy.lifetime ( particle )

Read particle lifetime from PDG database

Definition at line 84 of file rpvsusy.py.

def lifetime(particle):
    """
    Read particle lifetime from PDG database
    """
    particle = PDGname(particle)
    tPart = pdg.GetParticle(particle)
    if particle=="D0" or particle=="D0bar" :
        return 4.1e-13
    elif particle=="D+" or particle=="D-":
        return 1.0e-12
    elif particle=="D_s+" or particle=="D_s-":
        return 5.0e-13
    elif particle=="B0" or particle=="B0bar":
        return 1.5e-12
    elif particle=="B+" or particle=="B-":
        return 1.6e-12
    
    return tPart.Lifetime()
 
 

◆ mass()

rpvsusy.mass ( particle )

Read particle mass from PDG database

Definition at line 68 of file rpvsusy.py.

def mass(particle):
    """
    Read particle mass from PDG database
    """
    particle = PDGname(particle)
    tPart = pdg.GetParticle(particle)
    return tPart.Mass()
 

◆ PDGcode()

rpvsusy.PDGcode ( particle )

Read particle ID from PDG database

Definition at line 60 of file rpvsusy.py.

def PDGcode(particle):
    """
    Read particle ID from PDG database
    """
    particle = PDGname(particle)
    tPart = pdg.GetParticle(particle)
    return int(tPart.PdgCode())
 

◆ PDGname()

rpvsusy.PDGname ( particle )

Trim particle name for use with the PDG database

Definition at line 41 of file rpvsusy.py.

def PDGname(particle):
    """
    Trim particle name for use with the PDG database
    """
    if 'down' in particle: return 'd'
    if 'up' in particle: return 'u'
    if 'strange' in particle: return 's'
    if 'charm' in particle: return 'c'
    if 'bottom' in particle: return 'b'
    if 'beauty' in particle: return 'b'
    if 'top' in particle: return 't'
    if '1' in particle:
        particle = particle.replace('1',"'")
    if (not (('-' in particle) or ('+' in particle) or ('0' in particle)
             or ('nu_' in particle) or ('eta' in particle) or ('phi' in particle) )
        and (particle not in ['d','u','s','c','b','t'])):
        particle += '+'
    return particle
 

◆ width()

rpvsusy.width ( particle )

Read particle width from PDG database

Definition at line 76 of file rpvsusy.py.

def width(particle):
    """
    Read particle width from PDG database
    """
    particle = PDGname(particle)
    tPart = pdg.GetParticle(particle)
    return tPart.Width()
 

Variable Documentation

◆ c

rpvsusy.c = constants()

Definition at line 145 of file rpvsusy.py.

◆ pdg

rpvsusy.pdg = ROOT.TDatabasePDG.Instance()

Definition at line 39 of file rpvsusy.py.

Classes

Functions

Variables